Otter Creek Mountain Bike Race & Trail Run
About this race
Ride. Run. Celebrate the trails — North Dakota style.
Welcome to the Otter Creek Trail Festival, a two-day celebration of off-road adventure at Harmon Lake Recreation Area near Mandan, North Dakota.
Compete in the Otter Creek Trail Run or the Otter Creek Mountain Bike Race — then stick around for camping, food, and family fun at one of North Dakota’s most scenic outdoor venues.
🌟 Festival Overview 🌟
Date: June 12-13, 2026
Location: Harmon Lake, Mandan, ND
Events: Trail Run | Mountain Bike Race
Prizes: $4,200 total mtb race cash payout — equal for men and women
Host: 701 Cycle & Sport
The Otter Creek Trail Festival is a weekend designed for everyone — from first-time trail runners to expert mountain bikers chasing podium spots. Come for the race, stay for the community, and experience why Harmon Lake is North Dakota’s favorite summer trail destination.
The Otter Creek Mountain Bike Race & Trail Run brings an exciting 5.6K, 22K, Ultra, Half-Marathon to Mandan, North Dakota on June 13, 2025. Don't miss this beautiful event!
Pick your distance
Trail running
Trail Run Short Loop [approx. 3.5 miles]
The short loop will utilize the west side of Harmon starting down the 2-track and meeting up with end of Epic Loop, returning back to the finish line via Fast & Flowy. (This is the same route of the "lead-in" for the mtb race).
Trail Run Long Loop [approx. 13.7 miles]
The long loop will utilize the west side of Harmon. The race will utilize the 2-track, Epic Loop, Blue Sky, Chutes & Ladders, and finishing on Fast & Flowy with a return to the Finish Line.
Mountain biking
Expert Race - 55 Miles
The 55 mile distance is going to start off with a lead in of approximately 4 miles before dropping down and crossing the dam to begin the short lap that will include Tight & Twisty, Chutes & Ladders, the Epic Short Loop (passing by the aid station) and Fast & Flowy. Short Lap distance approximately 12 miles. Laps 2 & 3 will each include the Harmon Lake trail system in it's entirety. Each of these laps will take you through Tight & Twisty to Chutes & Ladders. Next you'll hit Fast and Flowy until you hop off onto the Epic Loop. From the back of the Epic Loop you get to slay the newest trail, Blue Sky Trail. You'll pop back out and conquer the remainder of the Epic Loop to then finish the last half of Fast and Flowy. After coming through the chute you get to enjoy the ride on the pavement down to the dam before you do it all over again! Laps 2 & 3 are each approximately 19 miles. Registration includes event t-shirt and post-race meal & beverage.
Sport Race - 35 Miles
The 35 mile distance will start with the same lead-in (approx. 4 miles) and short lap (approx. 12 miles) that the 55 mile race begins with. After completion of the short lap, the 2nd lap will feature all of the trails Harmon Lake has to offer including the 2 newest trails! This distance will take you through Tight & Twisty to Chutes & Ladders. Next you'll hit Fast and Flowy until you hop off onto the Epic Loop. From the back of the Epic Loop you get to slay the newest trail, Blue Sky Trail. You'll pop back out and finish the remainder of the Epic Loop and the finish with the last half of Fast and Flowy with a sprint through the finish chute! Registration includes event t-shirt and post-race meal & beverage.
Beginner Race - 13 Miles
The 13 mile distance will start at under the arch before dropping down to the dam and hitting the Otter Creek Trail Tight and Twisty, Chutes and Ladders, the Short Epic Loop (where you will pass by the aid station at around mile 9) and finish out on Fast and Flowy. Registration includes event t-shirt and post-race meal & beverage.
E-Bike Sport - 35 Miles
The 35 mile distance will start with the same lead-in (approx. 4 miles) and short lap (approx. 12 miles) that the 55 mile race begins with. After completion of the short lap, the 2nd lap will feature all of the trails Harmon Lake has to offer including the 2 newest trails! This distance will take you through Tight & Twisty to Chutes & Ladders. Next you'll hit Fast and Flowy until you hop off onto the Epic Loop. From the back of the Epic Loop you get to slay the newest trail, Blue Sky Trail. You'll pop back out and finish the remainder of the Epic Loop and the finish with the last half of Fast and Flowy with a sprint through the finish chute! Registration includes event t-shirt and post-race meal & beverage.
About Mandan
Otter Creek Mountain Bike Race & Trail Run takes place in Mandan, North Dakota, United States. The local timezone is America/North_Dakota/New_Salem.
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Race information has been sourced from the event's official website and other publicly available resources. For the most up-to-date details, please refer to the official website directly. If you notice any incorrect or missing information, don't hesitate to reach out to us by email.