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| Event | Distance | When | Entry fee | Cap |
|---|---|---|---|---|
| Friday, Jun 11, 2027 | ||||
| Trail Run Long Loop ~ 12-13 miles | Half Marathon | Jun 11, 20276:00 PM | $55$65 after Jan 1, 2027 | – |
| Trail Run Short Loop ~ 3-4 miles | Other | Jun 11, 20276:00 PM | $35$45 after Jan 1, 2027 | – |
| Saturday, Jun 12, 2027 | ||||
| E-Bike Sport - 35 Miles | Mountain Bike | Jun 12, 20278:00 AM | $80$105 after Jan 1, 2027 | – |
| Expert Race - 55 Miles | Mountain Bike | Jun 12, 20278:00 AM | $100$120 after Jan 1, 2027 | – |
| Sport Race - 35 Miles | Mountain Bike | Jun 12, 20278:00 AM | $80$105 after Jan 1, 2027 | – |
| Beginner Race - 13 Miles | Mountain Bike | Jun 12, 202711:00 AM | $60$70 after Jan 1, 2027 | – |
Entry fees exclude processing fees. Prices and dates come from the race's registration page and refresh nightly.
Online registration closes Jun 11, 2027, unless the race fills first.
Sunrise on race morning is at about 5:49 AM, and the E-Bike Sport - 35 Miles starts at 8:00 AM. The start sits about 1,870 feet above sea level.
Fees exclude processing fees. Comparisons use current entry fees and published results from races nearby.
Harmon Lake, Mandan, ND 58554
The pin marks the address the race lists, which is usually the start. Course maps are the organizers' own.
The 13.7-mile run course climbs 948 feet, about 69 feet a mile: hilly.
| Course | Distance | Climbing | Terrain |
|---|---|---|---|
| OC Trail Run - Long LoopRun, out and back, 71% unpaved, steepest 10% | 13.7 mi | 948 ft | hilly |
| OC Trail Run - Short LoopRun, loop, 89% unpaved | 3.6 mi | 215 ft | hilly |
From the course maps the organizers publish on Ride with GPS and MapMyRun; climbing is the total gain the map reports. Courses can change between editions, so check the date on the map.
Aggregated from official results (Competitive Timing) for Otter Creek Mountain Bike Race & Trail Run. Individual finisher names are not stored here.
At the 2026 Beginner Race - 13 Miles, the fastest tenth finished in 1:18:21 or better, the top quarter in 1:21:01, and half the field in 1:31:50; the last tenth came in after 2:02:57.
At the 2026 Sport Race - 35 Miles, the fastest tenth finished in 3:01:28 or better, the top quarter in 3:10:26, and half the field in 3:23:54; the last tenth came in after 4:17:11.
At the 2026 Trail Run Long Loop ~ 12-13 miles, the fastest tenth finished in 1:38:41 or better, the top quarter in 1:53:34, and half the field in 2:11:04; the last tenth came in after 3:18:36.
| Age | Women | Men |
|---|---|---|
| Under 20 | 1:20:26 | 1:10:56 |
| 30-39 | 1:37:48 | 1:29:48 |
| 40-49 | n/a | 1:31:46 |
Groups with fewer than five finishers are left out. Awards vary by race; check the race's rules.
Where a finish time would have placed in 2026.
Down 16 percent since 2025.
All events combined, from official results.
From 2025 to 2026, the field went from 73 to 61 finishers, and the median time dropped from 3:32:33 to 1:31:50.
| Year | Finishers | Median | Fastest tenth | Winner |
|---|---|---|---|---|
| 2026 | 61 (-16%) | 1:31:50 | under 1:18:21 | 1:04:08 |
| 2025 | 73 | 3:32:33 | under 2:57:23 | 2:47:11 |
From each year's official results for the Mountain Bike; virtual options are left out.
Around June 11 the day usually runs from 55°F at dawn to 74°F in the afternoon, with measurable rain on about 24% of days. Cold snaps dip to 49°F and hot years reach 86°F.
Based on 75 days within a week of the date over the last 5 years, from historical weather for the start area. Not a forecast.
What the organizers of Otter Creek Mountain Bike Race & Trail Run cover on their registration page, in brief.
Schedule and packet pickup
Calling all Runners!! New offering for 2025 is a chip timed trail run on Friday evening, June 13th. Races start at 6pm. Race distances will be approximately 3.5 miles and 13.7 miles. Packet pickup will be held on Thursday, June 12th from…
Parking and travel
We’re proud to partner with Marriott International as the official hotel partner of the Otter Creek Trail Festival, June 13–14, 2025. Festival participants and supporters can access exclusive group rates at four Marriott properties in the…
Organize this race? Add details or a correction
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 11-12, 2027
Location: Harmon Lake, Mandan, ND
Events: Trail Run | Mountain Bike Race
Host: 701 Cycle & Sport