like what do i say wrote:
Like what do I say? Basically here are my times, here are my grades, give me money to come run for you? Seriously, how do I start the conversation?
It's like applying for jobs.
Do your homework first and learn as much about the school and team as you can. Ask informed questions. Don't ask for money in the first e-mail of course. Start off with a bit of chit-chat to learn about the general situation and progress from there.
"Dear Coach xxxx,
My name is xxxx from xxxx High School. I've been looking I am potentially interested in joining your cross country team ... and so on.
Here is my profile / resume / portfolio (attached).
Please feel free to write me back if you are interested."