Run through the unique macadamia nut and coffee fields of Hawaii in this trail event, offering distances from 5K to a highly challenging 50K.

• Scenic
• Competitive

Sun, Sep 20, 2026, 6:30 AM HST·5K, 10K, 13.1 Miles, 50K·Pahala, HI

Serious TestTRAIL

Course · Trail · Hilly · Timed race

Experience high-altitude trail running in Arizona's Coconino National Forest, supporting college cross country programs.

• Scenic
• For a Cause

Run the Texas coast on Galveston Island, where miles of open beach, Gulf Coast sunrises, and a lively festival await.

• Fun
• Scenic
• Quirky
• Festive

Conquer Missoula's mountains on this challenging 33-mile trail ultra, featuring over 8,000 feet of elevation gain and stunning open space views.

• Scenic

Sun, Oct 18, 2026, 7:00 AM MDT·17 Miles, 33 Miles·Missoula, MT

Serious TestULTRA

Experience the beauty and challenge of Hixon Forest with scenic trail runs from 5K to a 50K ultra, featuring stunning Mississippi River views.

• Fun
• Scenic

A challenging 100K or 50K ultra on Wisconsin's scenic Ice Age Trail, featuring stunning fall colors and a unique, custom-branded wooden finisher medal.

• Scenic
• Quirky
• Festive

Join the Cal Tri Events National Championship, a historic triathlon offering diverse distances and a competitive field in Newport Beach.

• Competitive

Sun, Nov 1, 2026, 7:20 AM PST·0.93 Miles, 3 Miles, 6 Miles, 50.5K, 400 Yards·Newport Beach, CA

Serious TestTRIATHLON

Embrace the challenge of Cleveland's fall trails, conquer the course, and earn your knighthood at this uniquely themed event.

• Fun
• Scenic
• Competitive
• Quirky

Embrace a winter adventure at Zion Ponderosa: choose your distance, enjoy stunning trails, and support meaningful causes.

• Fun
• Scenic
• Quirky
• For a Cause

Run through a landscape of 'Goblins' and Hoodoos, offering unparalleled desert views on a variety of trail distances.

• Fun
• Scenic
• Quirky

Run the Honolulu Marathon while supporting critically wounded service members and veterans through Semper Fi & America's Fund.

• For a Cause

Sun, Dec 13, 2026, 6:45 AM HST·26.2 Miles·Honolulu, HI

Serious TestRUN

Experience a challenging ultra on a scenic looped course, with a hilltop view of Lake Vian and a lively cheer zone to keep you going.

• Fun
• Scenic
• Competitive