The course by the numbers:
The 37.5 course has 24.75 miles of trail and 12.75 miles of FS rd. There is 4140' of climbing and 4170' of decent
The 52 mile course has 39.25 miles of trail and 12.75 miles of FS rd. there is 4979' of climbing and 5032' of decent.
The 100 mile course has 3.5 miles of pavement, 20 miles of FS rd. and 76.5 miles of trail. there is 11173' of climbing and 11185' of decent.
The average elevation of all 3 distances is about 9200'. All distance and elevations are approximate. 

COURSE DIRECTIONS:

Rules:

37 mile course Directions 

50 mile course directions

100 mile Directions 2011

The course will be well marked with surveying flagging , chalk,and reflective markers.
The race will start at 5:00 AM , and will have a 34 hr time limit for the 100 milers.

Updated 6/25/11

Ultra running is a hazardous sport.  You must use your judgment in participating or training for an ultra such as the Grand Mesa 100.  Changes in weather, topography, and other factors may moot or render inaccurate the information on this page. Be prepared for any contigency while on the course.