So, I'm doing the cycling (15mile) leg of a relay triathlon. I'll be in between the 750yrd swim and the 5k run.

It takes me several miles to really get warmed up...somewhere in the 7 to 8 mile range.

The race is close enough to my house that I plan to ride to it (about 8 to 10 miles).

My question is how long does a warm up last?