Spring ultramarathons in Kansas, United States

4 miles every 4 hours for 48 hours, solo or team participation options

Rugged 2.15-mile forest loop with rocks, roots, wooden walkways, and over 250 feet of elevation gain per lap, finishing at Burnett’s Mound summit.

Scenic six-mile crushed limestone loop around Miola Lake with up to 12 hours on course

24-hour run with festive atmosphere, food and drinks, special belt buckle for full duration finishers

Flat, crushed limestone rails-to-trails course from Ottawa through small towns, with stretches of asphalt and frequent aid stations

Four-loop course linking Horsethief Canyon, Prairie, Alum Creek, and Big Bluff with varied canyons, prairies, creeks, and bluff scenery

Dirt road loops through the Flint Hills near Manhattan, Kansas, featuring over 1,500 feet of elevation change per loop and multiple course aid stations.

Double out-and-back course on the Elk River Hiking Trail with single-track, rocky terrain, limestone bluffs, rock formations, and scenic vistas

Certified paved loop in a shaded private park; a controlled, repetitive format for 50K to 200 miles with on-site lodging and heated showers.

Demanding singletrack loops on the Switchgrass Mountain Bike Trail beside Wilson Lake, with a short pavement start and central hub basecamp.

Historic Flint Hills Trail route through reclaimed railway landscape, scenic views, and natural prairie surroundings south of Kansas City

Paved out-and-back laps on Ogg Road with 200 feet of climb per 1.1-mile loop from riverside bridge to summit parking lot in Kansas City

Out-and-back route on backcountry gravel roads through Flint Hills tallgrass prairie, open range scenery, minimal pavement, generous 15-hour limit

4.167-mile looped course on public roads, hourly starts, continuous laps until only one finisher remains

Technical, rocky, and hilly single-track through tranquil hardwood forest; runnable climbs on varied terrain in a relaxed, supportive atmosphere

Timed ultra on mowed pasture and dirt road, with rolling hills, uneven footing, and a low-key farmstead setting outside Norton

12.5-mile gravel road and rail-trail loop with repeated laps, regular aid access, and a low-frills, endurance-focused format