Hardrock 100 Endurance Run
The Hardrock Hundred Mile Endurance Run is an ultramarathon of 100.5 miles in length, plus 33,992 feet of climb and 33,992 feet of descent for a total elevation change of 67,984 feet, at an average elevation of over 11,000 feet. The race is held on a loop course on 4WD roads, dirt trails, and cross country in Southern Colorado's San Juan Range, USA.
Upcoming Races
Jul 10 2026
100 Miles
33,000
33,000
ft.
Single Loop
14 Aid
Stations
48:00 Cutoff
5
Elevation Rating
Mountainous, >12,500 feet in 50 miles
4
Surface Rating
Substantial rocks, roots and/or ruts
Results
100 Miles
| Date | Finishers | Top Result (F) | Top Result (M) |
|---|---|---|---|
| 07/11/25 | 114 | 25:50:23 | 22:21:53 |
| 07/12/24 | 119 | 26:11:49 | 21:33:06 |
| 07/14/23 | 111 | 26:14:12 | 23:00:30 |
| 07/15/22 | 115 | 26:44:36 | 21:36:24 |
| 07/16/21 | 112 | 27:21:48 | 21:45:50 |
| 07/17/20 | Race Cancelled | ||
| 07/19/19 | Race Cancelled | ||
| 07/20/18 | 114 | 30:23:36 | 26:20:21 |
| 07/14/17 | 126 | 28:31:50 | 24:32:20 |
| 07/15/16 | 112 | 29:02:09 | 22:58:28 |
| 07/10/15 | 126 | 28:22:47 | 23:28:10 |
| 07/11/14 | 100 | 29:49:58 | 22:41:33 |
| 07/12/13 | 104 | 29:54:55 | 24:25:50 |
| 07/13/12 | 98 | 29:09:00 | 24:50:00 |
| 07/08/11 | 80 | 29:27:00 | 25:17:00 |
| 07/09/10 | 100 | 28:32:00 | 27:18:00 |
| 07/10/09 | 104 | 27:18:24 | 24:38:02 |
| 07/11/08 | 98 | 31:09:40 | 23:23:30 |
| 07/13/07 | 98 | 29:24:45 | 26:08:34 |
| 07/14/06 | 81 | 31:53:51 | 27:07:55 |
| 07/08/05 | 71 | 32:07:41 | 28:29:15 |
| 07/09/04 | 80 | 32:48:52 | 30:39:14 |
| 07/11/03 | 69 | 33:02:28 | 28:01:55 |
| 07/13/01 | 64 | 29:58:00 | 26:39:00 |
| 07/07/00 | 60 | 32:20:03 | 29:35:00 |
| 07/10/99 | 63 | 31:55:19 | 30:10:56 |
| 07/10/98 | 38 | 40:57:57 | 30:12:31 |
| 07/12/97 | 40 | 37:22:32 | 30:33:31 |
| 07/12/96 | 42 | 40:43:13 | 30:44:17 |
| 07/09/94 | 37 | 38:43:12 | 32:00:15 |
| 07/10/93 | 26 | 41:38:00 | 29:35:00 |
| 07/11/92 | 18 | 45:47:00 | 32:34:00 |