UltraUnited StatesTexas

The Mammoth Trail Run 2026 - 100K / 50K / 25K / 10K / 5K and Mighty Mammoth 1K Kids Dash 2026

10.10.2026Glen Rose (United States)

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10062.1 km mi

100K Ultra Trail Runlongest of 6 courses

At a glance

The Mammoth Trail Run 2026 - 100K / 50K / 25K / 10K / 5K and Mighty Mammoth 1K Kids Dash 2026 took place on Saturday 10 October 2026 in Glen Rose (Texas, United States). 6 courses from 1 to 100 km.

The organiser has not published the elevation gain or the route yet.

The 2027 edition is expected on Saturday 9 October 2027, date to be confirmed by the organiser. On Kliva, plan your pacing and nutrition for free, then send the plan to your watch.

6 courses

1km0.6mi
The Mighty Mammoth 1K Fun Run
10.10.
No index
5km3.1mi
5K Trail Run
10.10.
No index
10km6.2mi
10K Trail Run
10.10.
No index
25km15.5mi
25K Trail Run
10.10.
No index
50km31.1mi
50K Trail Tun
10.10.
No index
100km62.1mi
100K Ultra Trail Run
10.10.
No index

GPX trace not yet published.

Race plan

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Pacing, aid stations and fueling timed to your effort on The Mammoth Trail Run 2026 - 100K / 50K / 25K / 10K / 5K and Mighty Mammoth 1K Kids Dash, in one roadbook.

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Start

Glen Rose (United States)

Where to stay

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