This 100K course includes 51 Miles of single-track trails, 23 miles along the famous Colorado Trail in the beautiful San Juan Mountains.
| Name | Date and Time | |
|---|---|---|
| 2018 Silverton Ultra Marathon (100K) | Saturday, August 11, 2018 6:02AM (MDT) | 35 entrants |
| 2017 Silverton Double Dirty 30 (100K) | Saturday, September 23, 2017 7:02AM (MDT) | 23 entrants |
| 2016 Silverton Double Dirty 30 | Saturday, September 24, 2016 7:00AM (MDT) | 33 entrants |