FlatRock 101K/50K
April 18th 2026
Independence, KS
50 KM |
101 KM
FlatRock 101 is BACK!!!
The history behind these races is immense with FlatRock being the first and oldest trail ultra in Kansas!! Epic races such as the 2017 flood year have become the stuff of legend and lore! This is a must run trail series. Come see this unique aspect of Kansas like you have never experienced it before!
FlatRock Triple Crown Series
The FlatRock Triple Crown will once again be held for those runners looking for some real punishment on this legendary course! For those willing and able to finish all three races (WinterRock 25K, FlatRock101K, and the FlatRock 50K) you will receive a special unique award at the end of your 176K journey that will definitely be worth all of the punishment.
WinterRock 25K/12K January 4th, 2025
FlatRock 101K/50K/25K/12K April 19th, 2025
FlatRock 50K/25K/12K September 27th, 2025
Course Description
A double out & back on the gorgeous Elk River Hiking Trail, just outside of Independence, KS. Accurately measured forest trail winding through unique limestone bluffs, rock formations & picturesque vistas. Mostly single-track, very rocky, no long hills.
Upcoming Races
Apr 18 2026
50 KM
3
Elevation Rating
Hilly, ~2500-7500 feet in 50 miles
4
Surface Rating
Substantial rocks, roots and/or ruts
Apr 18 2026
101 KM
Double out-and-back
Multiple Loop
19 Aid
Stations
24:00 Cutoff
4
Elevation Rating
Very hilly, ~7500-12,500 feet in 50 miles
5
Surface Rating
Very rough trail
Results
50 KM
| Date | Finishers | Top Result (M) | Top Result (F) |
|---|---|---|---|
| 04/19/25 | 7 | 7:10:59 | 8:49:26 |
| 04/24/21 | 28 | 5:30:15 | 6:29:53 |
| 09/26/15 | 114 | 4:51:36 | 6:03:36 |
| 09/27/14 | 106 | 4:57:11 | 5:41:42 |
| 09/28/13 | 93 | 4:49:15 | 5:42:57 |
| 09/29/12 | 89 | 4:47:17 | 6:25:38 |
| 09/24/11 | 55 | 4:12:58 | 6:09:32 |
| 09/25/10 | 40 | 4:49:35 | 6:41:42 |
| 09/26/09 | 44 | 4:31:40 | 7:35:03 |
| 09/27/08 | 34 | 4:59:23 | 5:53:17 |
| 09/29/07 | 30 | 5:21:28 | 6:52:35 |
| 09/30/06 | 28 | 4:29:21 | 6:25:55 |
| 09/24/05 | 33 | 4:46:44 | 6:27:29 |
| 09/25/04 | 33 | 4:59:17 | 6:18:07 |
| 09/27/03 | 36 | 4:57:25 | 6:29:07 |
| 09/28/02 | 23 | 5:07:34 | 5:55:17 |
| 09/29/01 | 31 | 4:47:12 | 6:23:10 |
| 09/30/00 | 38 | 6:05:59 | 5:49:48 |
| 09/25/99 | 40 | 4:54:33 | 6:16:03 |
| 09/26/98 | 34 | 5:04:23 | 6:11:49 |
| 09/27/97 | 30 | 5:05:54 | 5:51:31 |
| 09/28/96 | 24 | 5:11:12 | 7:40:09 |
| 09/30/95 | 20 | 5:43:52 | 5:57:15 |
