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Trail Running calendar near Byron 2025-2026

We have found 42 Trailruns within 80 miles of Byron. See below where and when you can find the races.

Mines Of Spain 100 - Dubuque, IA

Dubuque - 77 mi from Byron

The Mines of Spain 100 offers 100 mile and 100 kilometer trail ultraruns on scenic loops around Dubuque's Mines of Spain. Expect rugged singletrack, steep climbs and Mississippi River views on a challenging multi loop course.

Saw Wee Kee - Fall Trail Run

Yorkville - 53 mi from Byron

Enjoy a scenic fall trail run at Saw Wee Kee Park with twisting soft paths, ups and downs and seasonal mud or wildflowers. Chip timed wave starts, unique series medal piece and seasonal swag for early registrants.