50K ultramarathons in Iowa, United States in 2026

Moderately challenging loops through Lake Macbride State Park with crushed limestone paths, technical snowmobile trails, diverse terrain, and scenic lake views.

Scenic trails weaving through 5,500 acres of Whiterock Conservancy, with river valley views and varied landscapes in Coon Rapids, Iowa

Varied Scott County Park trails north of Davenport, with gentle, runnable terrain and a flowing 50k format designed to feel approachable.

Rural Iowa backroads and the scenic Bridges of Madison County, thousands of feet of elevation gain, challenging hills, and muddy roads in wet conditions

Three-loop 30-mile course around lake and campground, wood chip trails, gravel roads, grassy fields, technical wooded sections, and uneven terrain

Rugged 50k trail course with creek crossings, steep climbs, and about 750 feet of elevation gain per loop through scenic Swiss Valley Nature Preserve

Rails to Trail course along the Wabash Trace Nature Trail, starting and finishing at Iowa West Foundation Trail Head Park

Rugged Iowa trail ultra in Mines of Spain: out-and-back singletrack, doubletrack and prairie trail, with stone steps, stream crossings and climbs.

Nebraska trail classic with a 30K route through Indian Cave State Park, historic old town sections, and varied trails featuring scenic area views

100% trail loops at Jester Park with rolling hills, flat sections, and 4,550 feet of elevation gain over 100 miles; variable Iowa weather and pacer support from