I've varied on my races
1st Half) - gps/ipod/Camelback, which i ditched at the 5 mile mark behind a tree. It was still there when i drove past so i picked it up then
Check in: Phone and keys
2nd Half (disney last year) - kTTW, gels (back pocket) gps/ipod
Check in: nothing
3rd Half - keys, gels (zippered back pocket, ipod, gels
Check in - nothing
Other races: I end up locking my car, then unlocking 1 door and putting the keys in the kids sliding cup holder carseats.
Marathon planning: No idea yet
Probably going to bring
back pocket: 2 or 3 gels, 1 honey stinger chews in a different bag
In shoe: Cash? Not sure yet, but great idea after reading coach's post
on me: gps/ipod shuffle
check in: extra shoes(or sandles), socks, other clothes, key to the world, cell phone (going to be tracking other runners to meet up with afterwards),
It's kinda funny since I'm staying at POR for the close factor, only to check a bag in anyways
At home: i run 2 miles loops (one in each direction from my house) so i leave water bottles on the curb and fuels in the mailbox. usually just leave the door unlocked