I am 45, been running for about 7 years. Had some success running high mileage back in 2008 and 2009 (50-70 mpw marathon training) but IT Band issues forced me to reduce mileage and I started doing triathlons. Since 2010 when I started racing tris, my run mileage has been between 25-40 mpw depending on the time of year. Since Labor Day I have dropping the swim and bike and tried to focus on the run for a few months to see if I can get my run times back down under 18 for 5k and under 38 for 10k. I have averaged close to 50 mpw for the last few months and have not seen much improvement. Running sub 6:00 pace is a real struggle. Recent 5k was 18:24. I have been doing one tempo run per week, and an occasional 10k pace workout like 5x1200 or mile repeats at 10k pace with short rest, and a long run of 12-13 miles. Compared to 2008 when I was 41, running even 50 mpw now seems like it is beating my legs up and leaving me tired and sluggish. I used to run tempo run at sub 6:15 pace for 4-5 miles, now running 6:30 pace feels like a major effort.
I’m considering switching to a lower mileage and higher intensity approach to see if that helps. Looking to see if any other master runners have had success with that approach. In other words, instead of running 50 mpw (spread over six days) with one tempo run and a long run (10-13), I would try running 35 mpw spread over 4 days with mostly high intensity. I was thinking of something like this:
Sunday: Long run progression, increasing pace each mile until last 3-4 are at half marathon pace (6:30ish).
Tues: 9 miles with hill repeats, either half mile or mile long very steep hills run all out with full rest.
Thurs: 9 miles with 3-4 at tempo pace, or long intervals at 10k pace.
Sat: Brick run (after one hour of intervals on the bike), 2 miles at 5k effort, then cooldown for a few miles.
I would mix in some shorter 5k intervals every other week to vary the workouts, but the idea is to run at a much higher intensity with more days off and less weekly mileage. I don’t have a problem with injuries running high intensity in the past. Curious to see if that kind of approach has worked for anyone else. I realize that doing shorter and more frequent runs is a better approach for many people who are new to running, but I have a lot of experience and a big running base since 2005, so I am not too concerned with running only four days a week. I just feel at this point that I need to run faster on a regular basis in order to race better.