Race started at 3:04 am Eastern Daylight Time today (Thursday March 18th)
Heavy US based participants this year:
Some of the more well known starters from what I can gather from Twitter include:
1. Jared Campbell (3 time Barkley finisher)
2. Courtney Dauwalter
3. Maggie Guterl
4. Jamil Coury
5. Greg Anderson
I'm sure there are other big names I am missing (not sure if String Bean is there or not) but this was a quick search