Date
Saturday, January 10, 2026
Est. Participants
Not specified
There are now has 2 series you can join: 1: IDAHO TRAIL ULTRA SERIES (ITUS) - Finish 4 of the ultra distance events (>50K or 31 miles). For times events and backyard ultra type events finish > 50K; 2: IDAHO TRAIL SERIES (ITS)- Finish 4 of the sub-ultra distance events (between 10 miles and 30 miles). For times events and backyard ultra type events finish between 10 and 30 miles.
You can join one or both challenges!! Finishers of both series receive a custom award (Ultra Trail Challenge = running jacket and Trail Challenge = hoodie). For each challenge there will be a point system and the top 6 females and top 6 men win a Dirty Dozen Award. You cannot combine ITUS and ITS races to get your 4 finishes. You have to complete 4 ITUS events for and ITUS finish and 4 ITS races for a ITS finish. However, you can do both independently and get both awards!!
The ITUS and ITS both have 10 races races across Idaho from various race directors that offer some of the most amazing views