I have a question for all of you marathon and half-marathon "seasoned veterans"-- training schedules for the 1/2 really don't "start" until about 12 weeks before the race. What are you supposed to do workout wise up until the race week?? I'm not a novice work-outer. I've taken time away from running, and have been doing things like step and spinning. I can still run with no ill-effects, though, and if I substituted running for the other activities, I'd probably be at about 20-25 miles a week (time wise)-- that seems like quite a bit, since the training schedules start out much lower than that-- what do all of you do in the "in-between" times?? Thanks!!!!