Trail running course through singletrack trails in Iowa, USA
Crater Trail Run

Crater Trail Run — 10K

10K·135 ft gain·Decorah, Iowa
mountaintechnicaltrail10kloop

AI-generated image

Distance10K
Gain135 ft
DateJun 6, 2026
Difficulty2/5

About This Race

The 10K course captures Bear Brook State Park's essence in a 6.2-mile format, still incorporating 614 feet of elevation gain that showcases New Hampshire's rolling topography. Runners experience the park's varied trail textures and forest transitions while maintaining a pace that allows appreciation of the natural surroundings. This distance provides an accessible introduction to the area's trail running while offering genuine challenge for those new to off-road terrain.

The course utilizes the groomed single-track mountain bike trails of Van Peenen Memorial Park, part of Decorah's extensive trail system. Runners navigate technical terrain through Iowa's distinctive bluff country, with the 50K consisting of multiple loops that showcase different sections of the trail network. Key landmarks include the Death Valley aid station, which 50K runners encounter four times, and the entrance to Palisades Park, serving as a major checkpoint for longer distances.

Elevation Profile

Elevation profile estimated from terrain data. Actual course may differ.

The course gains 135 ft over 6 miles, with the steepest section between mile 4–mile 4.

Location

Practical Info

Weather

Early June conditions in Northeast Iowa typically feature mild to warm temperatures with potential for variable spring weather.

Nearest Airport

DBQ - Dubuque Regional Airport

Accommodation

Decorah offers local lodging options, with the race located in one of the area's 13 parks that support the community's outdoor recreation focus.

Best For

Trail runners seeking technical terrainMountain bike trail runnersMidwest trail runners

Notable Features

The race showcases Iowa's unique bluff country terrain on trails that have gained regional recognition for their quality and technical challenge. The multi-loop format allows runners to experience different trail sections while providing excellent spectator and crew access. The community focus, with proceeds supporting local outdoor organizations, reflects the area's strong commitment to trail sports and outdoor recreation.

Other Distances at This Event

Kids Mile

233 ft gain

The course utilizes the groomed single-track mountain bike trails of Van Peenen Memorial Park, part of Decorah's extensive trail system. Runners navigate technical terrain through Iowa's distinctive bluff country, with the 50K consisting of multiple loops that showcase different sections of the trail network. Key landmarks include the Death Valley aid station, which 50K runners encounter four times, and the entrance to Palisades Park, serving as a major checkpoint for longer distances.

5K

633 ft gain

The course utilizes the groomed single-track mountain bike trails of Van Peenen Memorial Park, part of Decorah's extensive trail system. Runners navigate technical terrain through Iowa's distinctive bluff country, with the 50K consisting of multiple loops that showcase different sections of the trail network. Key landmarks include the Death Valley aid station, which 50K runners encounter four times, and the entrance to Palisades Park, serving as a major checkpoint for longer distances.

25K

207 ft gain

The course utilizes the groomed single-track mountain bike trails of Van Peenen Memorial Park, part of Decorah's extensive trail system. Runners navigate technical terrain through Iowa's distinctive bluff country, with the 50K consisting of multiple loops that showcase different sections of the trail network. Key landmarks include the Death Valley aid station, which 50K runners encounter four times, and the entrance to Palisades Park, serving as a major checkpoint for longer distances.

50K

522 ft gain

The course utilizes the groomed single-track mountain bike trails of Van Peenen Memorial Park, part of Decorah's extensive trail system. Runners navigate technical terrain through Iowa's distinctive bluff country, with the 50K consisting of multiple loops that showcase different sections of the trail network. Key landmarks include the Death Valley aid station, which 50K runners encounter four times, and the entrance to Palisades Park, serving as a major checkpoint for longer distances.