| Name | Details |
|---|---|
| Bighorn Trail Run | 1 event |
| Dirty 30 Running | 8 events |
| Fast Pfiffner | 1 event |
| Gnar Runners | 10 events |
| Hardrock Hundred Mile Endurance Run | 25 events |
| Imogene Pass Run | 1 event |
| Local Lupus Alliance | 1 event |
| Nolan's 14 | 9 events |
| Oak Hills 5th Ward | 2 events |
| Pirinenc | 1 event |
| Rattlesnake Ramble | 23 events |
| Running Up For Air | 5 events |
| Running Up for Air Colorado | 3 events |
| The Bear 100 | 9 events |
| Twisted Branch Trail Run | 4 events |