I'll run a 5M race Saturday - it's not a *major* goal race, but I will
rest up the prior couple days and give as close to 100% as possible.
I'd also like to get in a ~15M run the same weekend.
My instinct is that "race as part of long run" is likely less of an
injury-provoking factor than "race, then long run the next day"; i.e. I
think I'm more worried about consecutive hard days than a single run
which is both hard (fast) and hard (long).
So I'm inclined to do something like: 2M warmup, 5 race, 8 cooldown
(run home, very slow), and take Sunday off completely or maybe a very
easy 3M. My feeling is this may be the rough equivalent of a 10 mile
race or half marathon, in terms of stress on the body and need for
recovery. The fast bit is faster, the long bit longer, but for the
most part it's slower.
Does anyone have any data, folklore, opinion, wild conjecture, rules of
thumb, advice, or amusing anecodotes on the question of "race as part
of long run" vs. "race one day, long run the next"?