Ultramarathons in Oklahoma, United States

Night race on runnable jeep roads and technical terrain at Twin Mountains Offroad Park, with frequent loops and hot, humid conditions.

Scenic nighttime route along Tulsa’s RiverParks asphalt trails, illuminated Arkansas River crossings, urban landmarks, and riverside views

12-hour looped course on county roads with asphalt and gravel, mostly flat terrain, partial shade, and open traffic

Single-track loop on Lake Liberty Trail with marathon and 50K options, scenic lake views, trailhead start and finish, no road running

24-hour test of endurance on paved river trails, ten 5K intervals every 2.5 hours, river crossings, night running, and sleep deprivation

Rocky, root-filled single-track loops through rolling Oklahoma woodlands with 417 feet of elevation change per loop and unique endurance challenges

Unmarked urban marathon course with map navigation, scenic city landmarks, mostly flat to gently rolling terrain, and convenience store aid stops

Varied single track and jeep paths through old growth woods, lakes, and rolling hills on a 1,000-acre private ranch, with gravel, dirt, sand, and roots

Rugged gravel and prairie course through Cookson Hills’ oak-hickory forests and valleys, with fall foliage and Illinois River views in the J.T. Nickel Preserve

Forested, rolling hills across 12,500 acres with smooth trails, rocky and rooted sections, and scenic park landscapes

Scenic single-track loops through Lake Thunderbird State Park with multiple endurance distances and runnable terrain near Oklahoma City

Four loops of fast, flowy single-track around scenic Liberty Lake, wooded paths, short road crossings, start and finish near trailhead by beach and campsites.

Technical, rocky and hilly trails through Cross Bar Ranch’s rugged terrain near Turner Falls, demanding elevation and diverse offroad routes

3.1-mile varied trail loop completed hourly, flexible distance and pacing, supportive atmosphere with no DNFs or penalties

3.1-mile varied trail loop completed hourly, flexible distance and pacing, supportive atmosphere with no DNFs or penalties

Looped 50K trail course at Lake Carl Blackwell with optional challenge stations, time credits, and strategic elements amid scenic Oklahoma terrain

Scenic loop trails around Lake Carl Blackwell with challenge stations featuring strength, focus, grappling, sandbag carries, and problem-solving tasks

Rugged, technical 50K route through the unexpectedly mountainous terrain of the Ouachita Mountains with significant elevation changes

50K on Tulsa’s paved Riverparks Trail system: fast, mostly flat riverside running with one notable hill appearing twice.

Dirt and gravel roads, leaf-covered four-wheel drive paths, 4,500 feet of elevation gain, multiple water crossings, remote Cookson Hills landscape