Mileage.

Yeah, I can't imagine doing more than 3 miles on the track. Of course, until today, it'd been months since I've gone past 5K, so really, what am I talking about?

Slowly ticking up the mileage and CFE programmed a 10K today. I dialed that back to 5 miles and paced at 8 min/mile. Chose that based on several factors, including sore legs, snow and ice and curiosity about about how fast 8 minute miles are because I'm typically going faster than that. Boom.

Also, the good thing about CFE is even though you're supposed to recover, really, you're never fully recovered, so you can always chalk up a given performance to lingering effects of prior workouts. I know, I need to stop using excuses, because technically, my times should always be improving.

I was happy with today though, it certainly never taxed my cardio, just wore down on my legs (groin, mainly). And I felt really great post-run, so that's always a plus.

mywrite: 5 mile run paced at 8 min/mile. Finished slightly ahead of pace at 39:54. Enjoyable.
Only have to run a little more than 5 times as far at that pace in 8 months to get my marathon time.