Idaho Trail & Ultra Series

ITUS is a series of 11 races across Idaho from various race directors that offer some of the most amazing views and challenges to test your endurance, speed, and grit.

How to complete the Idaho Trail Ultra Series?

Complete 4 of the 11 races in any ultra distance (31 miles or more) and you get a logo'd ITUS jacket at the end of the year. 

Points System:

• You accumulate points based on the distance and finish time of each race.  
• The top 6 men and women in points are considered "The Dirty Dozen" and you receive a special Dirty Dozen award. ​
• How are ITUS points configured?
  • We divide the winning time by runner time and then multiply by the applicable points for that race (31 for 50k)
  • Bonus Points: 1st place -10 points; 2nd place -5 points; 3rd place -3 points. 2nd and 3rd place points are calculated on the formula BEFORE adding the bonus points. 

The 2025 Idaho Events That Earn ITUS Points:

January

• Wilson creek frozen 50k January 25

March

• Pulse Endurance Runs 100M, 48HR/24HR/12HR/6HR: March 14th-16th (Complete at least 50k)

April

• Spitfire 55K: April 19th

• Weiser River 50K: April 27th

June

• Scout Mountain Ultra Trail 100M, 50M, and 50K : June 6-7

• River of no Return 108K, and 55K: June 14th

July

• Beaverhead Endurance Runs 100K & 55K: July 12th

• Standhope Ultra Challenge 100M & 60K: July 25th-27th

September

• If You're Not First You're Last: September 6th - ? (Complete at least 50k)

• Bogus 50/50: 50M & 50K - September 28th

December

• Dizzy Horse Backyard Ultra: December 13th -? (Complete at least 50k)