Races›United States›Oregon›Waldo 100K
Oakridge, OR, seen from above
August 2027 · date to be announced

Waldo 100K

Oakridge, Oregon · United States
UltraLake100% trail

Circles pristine Waldo Lake in the Oregon Cascades

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Course

A mountain trail 100K starting and finishing at Willamette Pass Ski Area, 70 miles south-east of Eugene in the Oregon Cascades. The course summits Fuji Mountain at 13.7 miles for the first view of Waldo Lake and climbs Maiden Peak above 7,800 feet. Aid stations sit 4.9 to 7.5 miles apart, with three covering the remote final 24 miles.

100K100 km

Key dates

Provisional date, projected from last year — the organiser has not announced this edition yet. We show the month only.

About

A 100K trail ultramarathon near Oakridge, Oregon, circling Waldo Lake in the Cascade Mountains' Waldo Lake Wilderness. It's known informally as the "Where's Waldo 100K."

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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.