Trail Running calendar near Oxford 2026-2027

Trail races at Swiss Valley Nature Preserve near Peosta, Iowa, offering 5.2 mile, 25k and 50k options on a multi loop course with creek crossings and rugged, hilly terrain. Free camping, showers and shuttle service are provided.

A chip timed 5K in Keystone, Iowa on 10/10/2026 where participants wear flag belts and encounter costumed zombies who try to pull flags. Proceeds support Keystone First Responders and Benton Girl's Wrestling.

A trail running event at Backbone State Park in Dundee, Iowa, on Saturday, October 10, 2026, organized by Backbone Lake Friends, offering a 4.3 mile Original route and a 10K Lake Loop with stated difficulty levels.

A charity running event in Solon, Iowa featuring a timed 5K and a Monster Mile, with all proceeds to the Arthritis Foundation to support pediatric rheumatic disease awareness.

A Midwest trail ultramarathon in Dubuque that uses a roughly 20 mile loop through the Mines of Spain Recreation Area. Options include a 100 mile five loop race and a 100K three loop race with substantial elevation gain.

A 48 hour endurance event at Big Woods Campground in Cedar Falls, IA with solo and 2 to 4 person relay options. Runners complete 4 miles every four hours, with on course food, water, participant sweatshirts, and finisher medals.

Trail races at Geode State Park with 5k, 12k and 25k options, two aid stations and water at the beach shelter. The event raises funds for the park's concession building and includes a race t-shirt; youth receive a discount.

Miner 49er in Dubuque, IA features 25K and 50K runs on single-track and prairie trails with significant elevation gain, three aid stations, and views of the Julien Dubuque Monument, Horseshoe Bluff, and the Mississippi River.

A six hour trail endurance run at Pinicon Ridge Park near Central City, Iowa, on a 1.2 mile loop with two large climbs and stairs. Course direction changes every two hours and the event includes aid station food, a race shirt, and awards.