Question:
Vlad asks...
Hi Mary,
I've been slowing down in the seconf half of the marathon. I have been training for marathons for the last three years with a weekly mileage between 40-60 miles. This year, I ran three marathons (Boston, Vermont, Quebec) and, in all these marathons, I significantly slowed down in the second half (by 15 minutes in Boston, 7 minutes in Burlington, and by about 6 minutes in Quebec). Yet, during my long runs, I have been running either steady pace or occasionally negative splits. I know that an obvious answer can be that I started off too fast, but my PR fom my last year is 2:51:53 and my half-times from this year were comparable to that pace. So even though my training times have improved against the last year, my marathon times are legging behind. Perhaps, the weather conditions might be partly at work here--Vermont 70 degrees plus higher humidity; Quebec: 70 degrees and rain. But still it seems that I might be doing something wrong. What do you think?
Answer:
The obvious answer would be to run the first half a little slower. However, it does sound like the weather could be a factor. 70 degree humid weather is NOT ideal for running 26.2 marathons. I think it is normal to slow down in that type of weather condition. You may want to focus on staying well hydrated and well nourished during your next marathon. Remember that you must drink & maintain your energy levels during the early stages of the race, in order to get through the latter stages without a struggle (ie slowing down.)
I generally try to drink fluids at least every few miles. I also recommend doing an energy gel every 40 minutes. I tend to drink just water for the first half of the marathon, and then switch to the electrolyte drink during the second half. Again, I can only tell you what has worked for me. Try & experiment during your long training runs to come up with the formula that's right for you.
I wish you success in your next marathon and hope it is a "negative split."
Gotta run,
Mary