Trail Running Calendar South Dakota 2026-2027

A multi-race trail event in Deadwood, South Dakota, featuring marathon, half marathon, relay, 5K and kids 1K on the scenic Mickelson Trail with aid stations and shuttle service.

A fast downhill 5 km on the Mickelson Trail in Deadwood during the Deadwood Mickelson Trail Marathon weekend. A 1 km kids race is held the same day.

The Rattler 5 Miler is a roughly five-mile community race in Rapid City on June 13, 2026, centered at Black Hills Running Company and routed through Hanson-Larsen Memorial Park. Entrants receive a custom July 2026 to June 2027 trail calenda..

A trail event weekend based in Sturgis with races on the Centennial and Deerfield trails, offering distances from 30K to a 100 mile course listed near 108 miles and supported by multiple aid stations and drop bag locations.

A looped trail ultra at Great Bear Ski Valley near Sioux Falls offering 50k, 30k and 20k options on a roughly 10 km loop with about 1200 feet of climb per loop.

Trail and road courses at Tomaha Trail in Hisega, South Dakota offering 30K, half marathon and 10K distances with published maps, shuttle service to starts, member discounts, and a shirt guarantee date before the race.

An annual ultramarathon in the Black Hills of South Dakota on the George S. Mickelson Trail. Races include 100 mile, 50 mile, 30 mile, 20 mile, and a 30 mile CrossFit relay option.

A 5K event with two options: a Pump N' Run where bench press reps reduce 5K time, and a Traditional 5K, both on Adams Homestead limestone trails in North Sioux City.

Time-based mountain bike and trail run event at Big Hill Trails supporting Northern Hills Area CASA, with 3- and 6-hour race options, team entries, aid stations, participant lunch, camping allowed, and cash prizes for breaking 6-hour bike r..

605 Trail Fest brings three trail distances to Good Earth State Park in Sioux Falls on August 15, 2026, including an 8 mile, a 4.5 mile and a 1 mile youth course. Packet pickup is scheduled the day before.

Timed running events from 3 to 48 hours take place on a 1.5 mile loop around an organic vegetable farm near Lennox, SD. The course is mainly dirt and pasture and includes a staffed aid station with flush toilets.

A last-person-standing backyard ultra near Spearfish, SD, run on repeated 4.167-mile loops with about 375 ft elevation change per loop on wide Big Hill trails. Aid station, free trailhead camping, and milestone awards included.

Trail races through Big Sioux Recreation Area in Brandon, SD, with 5 mile, 2 mile, and a free kids one mile race. Courses use paved and dirt trails through prairie, woods, and a bluff and are chip timed.

Final race of the 2026 Black Hills Runners Club Trail Series at Alkali Trailhead in Sturgis, SD, with 10K and 18K courses through rolling hills and pine singletrack; youth entries are listed as free.

A trail event at Dorothy Pecaut Nature Center in Sioux City on October 3, 2026. It features a 5 Mile trail run, hike or ruck plus a kids 1k, marked trails, notable elevation gain, and age group awards.

Trail races at Newton Hills State Park offering **2 mile** and **6 mile** courses on single track and multi-purpose trails. Chip timing and a points series with defined age divisions are included; a state park day pass is required.

A trail ultramarathon at Newton Hills State Park near Canton SD with 20K, 30K and 50K on a 10k loop. Each loop has about 850 ft of gain, an aid station at the loop start finish, and shared sections with horse trails.

A 50K at Tuthill Park where runners complete a 0.31 mile loop one hundred times within 12 hours. Entry is by essay and runners pledge donations that are pooled and awarded to the winning runners' chosen charities.