SHAMELESS PLUG:
There's an adult with autism who runs competitively, whose mom is an internet friend of mine. He is nonverbal, low-functioning, and can't cross the street alone, yet with the help of dedicated "running guides" to keep him protected, he's done 7 marathons with a best time of 3 hours, 14 minutes, and is well-known in his local running community.
He's in a contest to be on the cover of the "Running World" international magazine. The red vote button is in the upper right corner, and you can vote up to once a day. You know, if you're so inclined.
http://covercontest.runnersworld.com/entry/654/