50K relay ultramarathons

Rolling, shaded 2.6-mile loop with cart paths, wooden bridges, waterfalls, and riverside views at Riverwest Nature Preserve; strict lap cutoffs in summer heat

Scenic Vermont course with 8 miles of road, 23 miles of rugged trails, over 5,000 feet of climbing, and varied landscapes through four towns.

Technical mountain course with 2500 meters of elevation change, old-growth forests, bike trails, and sweeping North Shore views

Paved point-to-point road ultra from Hilo to Waimea, with major early climbing, a long descent, and a tough exposed Saddle Road course

Mountain route through the Matanuska-Susitna valley, featuring rugged Alaskan scenery and summer landscapes along Hatcher Pass

Oceanside vistas along the East Coast Trail, dramatic cliffs, historic communities, Cobbler’s Path and Sugarloaf Path landscapes near Signal Hill

Runnable trails and rocky, technical sections on scenic Stake Lake Trails, cooler elevation above Kamloops, route marked by Dirty Feet orange flags

Scenic mountain trails in Yatsushiro City, Kumamoto, with demanding climbs, rugged terrain, sustained elevation and regional aid-station food.

Trail run across western Newfoundland featuring 100km and 50km distances, ocean views, mountain landscapes, and rugged wilderness terrain

Scenic four-loop course through cedar forests, rolling prairies, and along Twin Creek, with 3,000 feet of elevation gain and varied terrain

Scenic 31-mile lake loop on mostly runnable trails, accessible terrain with moderate challenge, plentiful themed aid stations staffed by local runners

50-mile route from Norco to Huntington Beach, traversing diverse Southern California landscapes with scenic beauty and rugged terrain

Looped route through Stirling’s historic sites and natural scenery, with stretches past Wallace Monument, Stirling Castle, Bannockburn, and the Ochil Hills

Trail race featuring 25k and 50k routes around Fanshawe Reservoir, highlighting scenic natural surroundings and varied terrain

Rugged climbs and technical singletrack through fall foliage on the historic Tecumseh Hiking Trail near Yellowwood Lake

50k course through Elk State Forest combining rail trails and dirt roads amid rugged, scenic terrain of the Pennsylvania Wilds

50K point-to-point on Galveston Island’s open beach, with hard-packed sand, flat runnable terrain, Gulf views, and exposed coastal conditions.

Point-to-point 50K on Galveston Island’s open beachfront, with Gulf shoreline, ocean breeze, sunrise views, and an exposed runnable course.

Fast, mostly flat course through the scenic northwest Las Vegas valley, with options for 50k, marathon, relay, and an additional summit challenge.

Scenic singletrack along Tellico Reservoir’s eastern shore, lush woods, lakeside viewpoints, out-and-back 100K, approachable terrain, peaceful backcountry vibe