Course
Both distances run the Pacific Crest Trail and the Gorge 400 trail before crossing the Bridge of the Gods into Cascade Locks, finishing with a loop of Thunder Island beside the Columbia River. The 50K is a point-to-point lollipop starting and finishing at Marine Park; the 25K starts at Wyeth Trailhead, with a shuttle, and finishes at Marine Park. Full-service aid stations with medical support and radio cover the course.
Key dates
- !RegistrationOpen now
- ★Race daySat 31 Oct 2026
Save Thunder River to your season and RunCalendar reminds you the morning entries open and before they close. Free on iPhone, no account needed.
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Lithia Loop Trail Marathon
Loops Ashland's forested watershed above Lithia Park
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Autumn Trails Eugene
Out-and-back on Eugene's Ridgeline Trail system
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Pioneer Road Run
Southern Oregon's oldest road race
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Hood to Coast Turkey Trot
5K loop at Portland International Raceway on Thanksgiving
A confirmed date shows its day; a provisional one shows only its month, because we won't claim a day we don't have. This page is rebuilt every night from the RunCalendar catalogue.
