Race planning

Plan Mountain Lakes 100

Use the listed edition as your starting point. Each tool keeps imported race facts separate from the targets and assumptions you choose.

This is a past edition. These details are for reference; confirm a future edition before making a plan.

Listed edition

Sep 19, 2026 – Sep 20, 2026

Format

Fixed-Distance

Distance

100 mi

Local start time

Not recorded — check the organizer

Duration / cutoff

30 hours

Crew and pacers

Each runner may have one crew vehicle, which must display a crew pass from bib pickup or the Clackamas aid station. Crews are allowed only at Olallie Lake (mile 12.2), Clackamas (40.4 and 71.7), the Timothy Lake dam (67.7), Olallie Meadows (97.7) and the finish; help anywhere else disqualifies the runner. Allow about 1 hour 30 minutes to drive between Olallie Lake and the Clackamas Ranger Station, and at Olallie Meadows park only on the east side of Road 4220, a 0.1-mile walk from the aid station. Pacers may start at Clackamas on the second pass (mile 71.7), for almost 30 miles with no crew access until Olallie Meadows, or at Olallie Meadows for the final 3.6 miles. They sign a waiver and collect a bib at the aid station, run one at a time, may carry supplies for their runner and must arrange their own transport; a pacer who stops partway waits at the aid station until it closes.

Drop bags

Drop bags go to Olallie Lake (mile 12.2) and Clackamas (miles 40.4 and 71.7) and come back to the finish by 2 PM Sunday. One bag per aid station, no larger than 21 liters, clearly labeled with name and bib number, securely closed and ideally waterproof; no paper bags, boxes or glass. Pacers cannot have their own bags and must use their runner’s.

Recorded facts reviewed Oct 25, 2026. Check the organizer’s latest rules. Calendar downloads use all-day dates and do not set a starting alarm.