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The Mammoth Glen Rose, TX - 100K - 50K - 25K - 10K - 5K and Mighty Mammoth 1K Fun Run

📅 October 9, 2027 (estimated date)📍 Glen Rose · United States

⚠️ 2027 edition: provisional information

The date is estimated from the 2026 edition (October 10, 2026), on the same day of the week. Courses, start times, fees and description are carried over from the previous edition: check them on the official website. This page will be updated as soon as the organizer publishes them.

Available distances

62.1 mi31.1 mi15.5 mi6.2 mi3.1 mi

About

The Mammoth Glen Rose, TX - 100K - 50K - 25K - 10K - 5K and Mighty Mammoth 1K Fun Run is a trail running event held at High Hope Ranch and Eco-Retreat in Glen Rose on October 9, 2027. Runners can choose from the 100K ultra (62 miles, 7:00 a.m.), the 50K (31 miles, 7:15 a.m.), the 25K (15.5 miles, 7:30 a.m.), the 10K (8:30 a.m.) and the 5K (9:00 a.m.) trail runs, plus an untimed 1K fun run at 11:00 a.m.

The courses wind through scenic natural landscapes, with aid stations along the trails. Highlights include shirts, medals and buckles for finishers, along with post-race celebrations.

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