Last year's start time was 8:00am so I would go with that for this year. I'm sure at it gets closer the start time will be posted.
Here's the link to the Spreadsheet:
https://docs.google.com/spreadsheet/ccc?key=0AnV6xT65HkPRdFRTWGUyNTRnWGNrNkZsbVVPNTViNkE#gid=0Here's the LOI link:
http://tourdivide.org/contactAbout linking your SPOT - when it gets closer to go time most likely you will receive an email on how to link your SPOT to the Leader Board site. I think there is a fee, but it is nominal.
GPX files: (these are last years)
http://www.topofusion.com/divide/gps.php Woody