Trail

Mastondon 10ish Miler

📅 February 28, 2027 (estimated date)📍 Tumalo · United States

⚠️ 2027 edition: provisional information

The date is estimated from the 2026 edition (March 1, 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

10 mi

About

The Mastondon 10ish Miler is a trail race of roughly 10 miles (16.1 km) near Tumalo, run almost entirely on singletrack in the Maston trail system in Central Oregon. It starts at 9:00 a.m. on February 28, 2027.

The course has minimal elevation gain, which makes for a fast pace, and offers panoramic views of the mountains, a river and a juniper forest. The race is seen as a welcome addition for local trail runners and an ideal training option during the winter months.

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Races nearby

Other upcoming races around Tumalo.