2025 - Otter Creek Mountain Bike Race & Trail Run
2025 distances
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.
Race-day weather
Conditions on June 13, 2025 — historical Open-Meteo data.
The sun rises at 5:48 AM and sets at 9:38 PM local time (CDT) in Mandan on June 13, 2025 — 15h 50m of daylight.
Course
No course map published yet.
The organizer hasn't released a route for this event, and we don't publish guesses. If you're the organizer, send us a GPX file and we'll draw the profile.
Reviews
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2025 results — Otter Creek Mountain Bike Race & Trail Run
240 finishers across 6 distances · leading places in the Trail Run Short Loop [approx. 3.5 miles]
| Place | Name | Time | Pace |
|---|---|---|---|
| 1 | Kyle Gagner | 25:48 | 7:22 /mi |
| 2 | Micah Crosby | 26:35 | 7:36 /mi |
| 3 | Jen Duletski | 26:59 | 7:43 /mi |
| 4 | Justine Schaff | 27:10 | 7:46 /mi |
| 5 | Jessica Aluise | 28:04 | 8:01 /mi |
Every finisher is on the results page, filterable by distance, gender and age group.
Other races near Mandan
Different organizers, within 40 miles, in the next three months
Where this page comes from. Race details were last updated on . We re-check listings regularly and again in the week before race day.
- Entries, prices, waves and inclusions — the event's official registration page
- Temperature and humidity — Copernicus ERA5 reanalysis via Open-Meteo (CC BY 4.0)
- Elevation and terrain relief — Copernicus DEM GLO-90, ESA (CC BY 4.0)
- Comparisons and counts — Race Discovery calendar, 6 Mandan events
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