SF Marathon Part I: SF Marathon Revisited

As a birthday present to myself, I decided to run the SF Marathon again after 27 years. This race has a special place in my heart since it was the first marathon I ever ran (back in 1982!), and because it was such a wonderful experience then. I thought if I really wanted to judge my fitness now, I should try it again so I can compare the then with the now. But first, let’s talk about why it was so wonderful back in 1982.

In July of 1982, I had only been running regularly for about 10 months. I had been a sprinter in high school and early college, and then crewed for Duke and Stanford, all of which are largely strength/fast twitch or strength/endurance sports. I always hated the two mile timed runs we had to do for crew to judge our fitness, just as I had always hated the warm up for sprint practice. But when I went through some big hiccups in my personal life, I coped with the emotional trauma by running long and hard, mostly at the Dish loop at Stanford, which was convenient because I worked as a research assistant there after graduating from college. I also ran some with friends, most of whom were faster than me. One was running the SF marathon, and I went along as an unofficial runner at the last minute. I didn’t know how to train, and hadn’t in fact done much specifically to train. I had obviously done some longer runs- maybe 8-12 miles, and the weekend before the race, I went out for ~18 miles on the roads from Stanford out through Portola Valley and back. That went ok so I decided I was ready to try the distance. But I was certainly not expecting much, and just hoping to finish. My running partner went out fast and I didn’t expect to see him again until the finish. I sauntered along for a few miles at what felt like a very slow pace. After ducking into a restaurant to use their bathroom (no portapotties at this event!), I figured it was time to see what would happen if I sped up, so I slowly increased the effort level and kept on speeding up until I couldn’t anymore. This worked surprisingly well, and before I knew it, I was steadily passing people, including my running partner (reduced to a painful walk by that stage)! I don’t know why it worked so well (this is all relative of course- real speedy people will laugh at my pitiful accomplishment), but I was thrilled to finish in 3:45, and especially to pass the guy who always made me feel so slow. I still have the medal to this day, which they gave me even though I was an unofficial runner.

So on to 2009. I’ve been running pretty regularly, albeit with injuries of one sort or another for the past year. Last summer it was a piriformis problem, and this past winter, it was hip flexor tightness, along with more piriformis and glut medius problems (opposite hip this time), not to mention sore gluts and hamstrings when I finally got other parts working properly. In trail ultras, there can be a fair amount of hiking due to steep hills and rough terrain, and trails are rough enough that speed isn’t really an option (for me anyway), so these injuries were not debilitating. More recently, I’ve managed to get past those particular problems, and train more or less regularly, and work on pace as well. So I thought it might be time for a comparison with those earlier days. Also, after David injured his knee last May (he’s mostly recovered and faster than before it seems!), I did more road running, starting from home running alone and heading up into the hills, or up to the Dish, while still doing trails some of the time. My usual training was pretty slow, with easy efforts at relatively low average heart rates (~130’s- I can be very lazy, but justify this by saying that it is low stress :) ). I threw in some faster tempo runs and Yasso 800’s starting in June to help raise lactate threshold, and these predicted a marathon time of ~4:10. So I felt like my legs and feet were reasonably acclimated to pavement and my conditioning should be good enough to get me through a marathon in a not too disappointing time.

The Expo: I’ve only done trail races since starting to run and/or train (if what I do can be called training) more consistently in the past year. So the Expo was a first for me and I was eager to see what it was all about. There were lots of samples of drinks and snacks to try, and clothes that looked like fun. But all I bought was shoes- there was a $50 per pair bargain booth, and I got my first Mizunos and a pair of Brooks. I don’t have much in the way of road running shoes (I ran the race in a cheap pair of Adidas from Costco!), so I thought this would be a good plan. We’ll have to see how these shoes work out.

On race morning, David dropped me off a few blocks from the start with only minutes to spare from my wave 6 start time of 6:17. The line for the portapotties was so long, I just gave up and headed to the start. This probably explains the unexpected mix of running speeds in the pack- all those faster people who were delayed for half an hour at the start! Our wave began, and I loped along at about a 10 minute pace, hoping things would thin out soon so I could get up a little more speed. That never really happened though. The pack was very thick all the way out and back across the Golden Gate Bridge. People could never really get their stride due to bobbing and weaving between faster and slower people all the way up to about mile 10. I blame this partly on the portapotty situation at the start, but also we really needed more space! Many people were taking walking breaks, which made it hard for those of us trying to keep a consistent pace. I felt great though, light on my feet (unusual!)- nothing like adrenaline and a crowd of happy people running in cool SF fog! Returning across the bridge, I yelled a loud “Go Julianne” to Julianne , the only other person I knew who was running (she was pacing the 4:45 group). When they offered Gu at the aid station, I obliged and had a couple (the caffeine was a good idea for this night person), downing them somewhere between miles 8 and 13. There was more Gu at mile 16, and I took another. All during this time, my heart rate was running about 145. It rose on the hills, but apparently I made up for any increase on the downhills. I felt like I was fading a bit between miles 13 and 16, but soon thereafter (maybe it was the double caffeinated espresso gel!) realized that if I was going to have any hope of a strong second half, I’d better get moving. I pushed into a heart rate zone of 150+ through Golden Gate Park and down toward the Embarcadero again. I kept pushing and pushing, but unfortunately, there were plenty of hills that kept pushing back. Then there were the diversions- it was very disconcerting to arrive at an intersection and have them pull caution tape right in front of you and send you a different way! Presumably, this trick allowed them to keep some traffic moving across the race route. I still felt ok though, except for cramping calves. The cramping got bad enough that I had to stop and walk a few times, or pull over to the curb and stretch out my legs- they were very very stiff! I met an older man during one of my stretching interludes who seemed concerned I might quit (he was 71, so I can still say he was older, right? ). He was wearing a complicated looking knee brace. When I asked him what the brace was for, he explained that he had arthritis and when his Dr. said he couldn’t run anymore, he said that was not an option. He said his knee actually feels better after he runs! He also explained that he runs at a level of effort to keep his heart rate below 130 (must be nice!). We ran together for a bit, then I went on ahead while I could, trying to get mine back up to 150 or so. Of course, the last few miles of a marathon just suck no matter what- everything was stiff and hurting by that point and I could barely climb up and down over curbs! And it was warming up in the now sunny city! But drag into the finish I did, in a sparkling 4:31!

The post-race food was disappointing, and not on par with post-ultra refeedings. There was carbs and more carbs in the form of bananas, snacks and more sugary drinks, but nothing more substantial, not that I saw anyway. They were very eager to replace our glycogen stores the moment we stopped running, but I wasn’t eager to replace my glycogen stores immediately- I planned on taking at least one rest day to recuperate. It’s not like a multi-day event where you need to be diligent about getting fuel stores replenished right away. After a grueling event as long as a marathon, you need protein to start the process of rebuilding and repairing muscles, not empty carbs! See the very interesting posts by Robb Wolf here and here. We left the food behind quickly, as there was really nothing there of any use to me. We found a gyro place instead, where at least there was mix of protein, veggies and carbs. It was hard to leave behind the massage tables though. They were quite tempting! Fortunately, David gives a good massage too, and I enjoyed his generosity very much once we got home.

I also thought it was interesting that they put water or cytomax into tiny little cups, holding usually no more than 2 ounces! After the race, I was very thirsty and drank the entire bottle of water they handed out at the end almost immediately. Do you suppose they were concerned about hyponatremia, and trying to keep people from over-hydrating?

I made no effort to “Carb-load” for the race. I may have eaten slightly more carbs than usual (maybe 150 g vs 100 g?), but nothing dramatic. The night before, we had plenty of protein and veggies, but also some birthday cake (a spectacular nut torte made by my in-laws). I was pretty happy that there was no outright crash into the “wall” and in fact I felt quite strong through the usual “wall” territory. Whether this was because I used a few gels (75 g worth of carbs), ample caffeine, or pacing so that I burned plenty of fat and didn’t prematurely deplete my glycogen stores, I don’t really know. I never used gels (they didn’t exist!) back in the 80’s when I was faster, and barely drank any of the Gatorade they offered at water stops anyway. Marathons just aren’t that long, and with proper training, you shouldn’t need carb supplementation anyway. But that’s not fashionable now either. Still, I try to keep an open mind and test these theories as best I can.

I wore drymax socks, and despite no blisters on the left foot, ended up with 3 on the right! The odd thing is that these blisters were in different places than I’ve ever had them before. I think an important part of blister avoidance is acclimating the feet to both the shoes you’ll be running in and the running conditions. I could have had tougher skin on those parts of my feet if I’d trained more in those particular shoes and with longer runs on those types of roads. Since I put in only a few longer runs on roads at all, and often in different shoes, my feet just weren’t prepared for the particular stresses of that event. You’d think I would know this by now. Well, live and learn, maybe…

Surprisingly, the Garmin says I averaged a heart rate (HR) of 147 for the first half (at a pace of 10:05) and 145 for the second (at 10:20). All the effort to get the HR up didn’t do much to increase speed overall, but perhaps the problem was the cramping and the heat due to the warming city streets. I certainly tried to pick up the pace, but the hills between miles 15 and 21 made sure the effort went largely to making it up and over them, not speediness. I don’t really think I could have gone much faster, except maybe in the earlier miles if there had been less crowding. By the end, I was pretty beat and going on inertia and will power.

I knew going into the event that I would probably be disappointed, and it was not likely I would have another surprisingly fast run. I wondered if maybe I hadn’t trained adequately, since I ran considerably slower than I had hoped. I mean the Yasso 800’s predicted a 4:10 after all! Perhaps they’re not so accurate. On the other hand, where was the muscle soreness? I had none of the usual post-race muscle soreness! Walking up and down stairs was just normal the days after the race. My body acted as if this was just a hard training run, and I went running again after resting only one day! This argues the effort was not all out. Perhaps I’m too used to ultras and doling the energy out more evenly over a longer period of time. Then there is that laziness factor…

All in all, this was a nice event. There were cute signs all along the race course asking questions about SF history (but it would have been nice to see some answers to those questions too). I saw parts of Golden Gate Park that I didn't even know existed before. The music stations were enjoyable too, if spaced a bit far apart. It was just a nice place to run on a foggy morning with 20,000 other like-minded people.

That said, I think trail ultras are a lot easier, at least for me. There is more variability in the terrain, allowing you to use different gaits, paces and muscles depending on what the trails throw at you at any given moment. At my level, I walk some, stretch more and generally don’t get quite as stiff and depleted as in a road marathon. So more trail ultras are in the plans, but possibly another road marathon. I should be able to run one faster, shouldn’t I? (see Part II, coming up)

Vibram Five-Fingers Shoes and “Barefoot” Running

I have always been something of a maverick with regard to sports equipment, resisting the latest gear marketing efforts in favor of minimalist and homemade equipment whenever it seemed to make sense. I also look for what actually works for me instead of what the pundits tell me I must have to optimize my performance and protect me from injury.

For example, I’ve been riding a recumbent bicycle for more than 25 years now, one with handlebars under the seat. Before I adopted the recumbent riding posture, I would routinely pinch nerves in my hands holding onto conventional handlebars. For rides of more than a few miles (I did a lot of longer rides of 50 to 100 miles or more in those days, as well as some extended multi-day trips), I would end up with numb hands. Since manual dexterity is important, this was unacceptable, and the recumbent riding posture fixed the problem. I also feel safer on a recumbent bicycle, largely because, if I fall off, I am much less likely to go head first over the handlebars. There is a visibility issue in that I ride lower to the ground, but that is readily fixed with a flag.

I also often find myself choosing footwear that is intended for some other purpose than the one I'm using it for. When I moved to the San Francisco Bay Area and continued to participate in orienteering, I found that even shoes that were allegedly specially made for orienteering did not work very well in the Bay Area hills, where I often found myself contouring along steep hillsides that could be anything from soft mud to loose dirt and rock. I abandoned my special orienteering shoes in favor of some cheap football shoes that had wraparound cleats that provided much surer footing.

My primary sport right now is trail running. There is, of course, huge amounts of hype supported by lots of allegedly “scientific” research that has created an ever-changing array of running shoes with all kinds of “features” based mostly around various allegedly needed forms of support and/or cushioning. “Trail running” or “all terrain” shoes have mostly tended to be shoes with a fair amount of both support and cushioning as well as deep treads for all the apparently obvious reasons. At the same time, serious racers on trails have tended to opt for lighter weight “racing flats,” at least for competition, just as for road and track running; they want to minimize the weight of the shoes. I, too, have found myself migrating toward lighter and lighter shoes with less cushioning. Most people in the business of selling you shoes will insist that it is dangerous to continue running in shoes after the cushioning has started to deteriorate (usually deemed to be a few hundred miles or a few months). I’m the kind of guy who thinks his shoes are just getting broken in at that point! And I never missed the cushioning beyond the occasional minor bruise if I step too hard on a small sharp rock. I’ve done all my recent ultra-marathon running in well-worn New Balance 790s. These are lightweight shoes with minimal support and cushioning, and the cushioning they do have tends to break down after a few hundred miles, well before I’m ready to replace the shoes. I’ve never had any foot problems with them beyond some toenail bruising on long downhill running. (I should note that I grew up wearing arch-support shoes to “correct” my flat feet. I still have very low arches and a tendency to pronate, but I’ve never sprained an ankle or otherwise had problems that I could attribute to the low arches, and I haven’t used arch supports in more than 30 years now.)

I’m also a fan of going barefoot. I rarely wear shoes around the house. I haven’t generally chosen to run barefoot, except on sand, though my feet are tough enough to withstand a few miles of barefoot pavement running. So I was intrigued when I encountered the Vibram Five-Fingers shoes. They were originally developed for water sports, but have been increasingly adopted by advocates of barefoot running. On something of a whim, I decided to try a pair. I’ve had them for a couple of months now, and they have become my primary running shoes!

There have always been a few people out there who have developed tough enough feet to go barefoot in all but the most dangerous conditions. A few have run marathons barefoot. But most of us non-bushmen haven’t got enough callouses to manage, say, a marathon without at least some protection. The five-fingers shoes can provide that protection and give us a chance to get a lot closer to true barefoot running under more ground conditions and run lengths.

Others have written more than I can about why you might want to run barefoot. There are links you can follow from the Vibram website. Check out Barefoot Ted and the Pose running method, for example. (And read Christopher McDougall’s new book, Born to Run, A Hidden Tribe, Superathletes, and the Greatest Race the World Has Never Seen, a surprisingly great read, that has quite a lot to say about running footwear [and Barefoot Ted]!) I’ll just focus on my recent personal experience.

I guess this still represents something of a preliminary report. Shortly after I acquired the shoes, I injured my Popliteus muscle, and have only just gotten back to where I can run my usual 40 to 50 miles per week, so I still haven’t got a lot of miles on my Five-Fingers. In some ways, though, the enforced slow recovery gave me a convenient opportunity to learn how best to take advantage of the Five-Fingers. Some observations:

1. If you’re going to be a “barefoot runner,” you are naturally tempted to forgo socks altogether with your Five-Fingers. I’ve now experimented quite a bit with and without socks. My current preference is to use socks only for hotter temperatures and runs of more than an hour or so. I don’t bother with socks for runs of an hour or less. The primary issue is that I start to develop hot spots after my feet start to sweat significantly. Socks help reduce the chafing and wick away the sweat. I don’t seem to need very much sock; I use very thin Injinji “liner” socks made from bamboo fiber, and I’ve had good luck up to the maximum run of about 16 rough trail miles I’ve tried so far. I did get a blister on the bottom of one heel on a hot hilly 8-mile run early on when I wasn’t wearing socks (and was still running with a heel-strike gait). Of course, if you’re not wearing socks, then the shoes are absorbing the sweat and dirt that normally ends up in the socks. I rinse the dirt and sweat out of the shoes every few days, something that I practically never do with “normal” shoes. Keeping the insole surfaces clean is important to minimize wear on the feet.

2. Five-Fingers shoes have a very smooth sole made of what I assume is a tough urethane material. (Vibram built their business around making tough long-lasting soles for hiking shoes and work boots.) So far, the soles show very little sign of wear, even though I’ve been doing relatively a lot of pavement running. I was concerned about traction, given the complete lack of tread, but I haven’t found it to be much of an issue. They slip a little on the typical summer dust on Bay Area dirt trails, but so do shoes with lots of tread. What you gain with toe grip generally makes up for the loss of tread grip. The shoes work fine in soft mud. Probably the most difficult terrain is tall grass and similar field conditions. The grass tends to get between the toes and get stuck. And, of course, anything spiny like star thistle can be a real problem. You wouldn’t want to run through a field of star thistle, cactus, or blackberries (not that I make a habit of doing so in any footwear…).

3. You do need to pay attention to where you put your feet. The soles spread the pressure points of ground features enough to dampen out the effects of fine and course gravel, but they don’t help all that much for isolated sharp rocks. I was already accustomed to sub-consciously paying attention to foot placement anyway, since I haven’t been using shoes with much cushioning for a long time, so I have yet to actually bruise my foot. If anything, the minimal cushioning really does force you to be more in tune with the surface you are running on. But extended running on rough trail does tend to abuse the feet somewhat more than running in shoes with more cushioning. Part of the adaptation one makes to running in Five Fingers shoes is to develop the foot muscles more to take advantage of the new-found capability to “feel” the ground you’re running on, and you can then adapt to longer running on rougher trails.

4. There is no fundamental requirement that you change your running gait to use Five Fingers shoes. However, the absence of heel cushioning certainly encourages a switch to something more like “Pose” running, where you land first on the ball of your foot rather than the heel. It’s a big enough change for distance running, that I didn’t do it immediately. But having made the transition, I really like what it does for me. It significantly reduced the stress on my injured knee, and it has probably given me a bit more spring
in my step and some resulting speed. Surprisingly, to watch me run, you might not even notice the difference. I already tended to land nearly level-footed, so the change is fairly subtle to a casual observer. I still land nearly level-footed, but tipped slightly the other way. From a muscle training point of view, it was necessary to develop a little more strength in the calf muscles, since they now play more of a role in absorbing the impact of each footfall, but that didn't take very long (for me, at least).

5. So far, my Five-Fingers are showing very few signs of wear and tear, though my total experience is probably still under 200 miles or so. One strap started to fray (possibly due to a manufacturing “defect” where the slot that the strap goes through was a bit too sharp), and I added a small piece of leather to repair the strap and take the wear. I don’t yet know what the ultimate failure mode that will cause me to retire the shoes is likely to be.

6. I haven’t yet worked up to runs of much more than a couple of hours, so I don’t yet know what issues will come up. So far, though, I’m not seeing any likely limitations, and I’m hoping that my chronic struggles with toenail bruising on multi-hour runs will be a thing of the past.

David