Mountain Lakes 100

Results: 2026

91 runners finished.

Go Beyond Racing's results page links to this UltraSignup listing, which does not publish a starter count.

Source: UltraSignup — 2026 Mountain Lakes 100 results. Checked September 24, 2026.

Next edition: September 18, 2027. The organizer lists September 18–19, 2027.

Event Overview

A remote 100-mile Cascade trail race based at Olallie Lake, with rocky mountain terrain, Pacific Crest Trail miles, 11,700 ft of gain, and a 30-hour cutoff.

Course & Terrain

Mountain loop through the Olallie Lake area and nearby Pacific Crest Trail terrain between Mount Jefferson and Mount Hood.

Key course features to know before comparing this race:

• Olallie Lake Resort race base
• Rocky Cascade and Pacific Crest Trail sections

The course combines runnable forest trail with rocky mountain footing and enough cumulative climbing to make late-race pace variable.

Why This Race Matters

Mountain Lakes 100 is a useful reference point for runners comparing long fixed-distance ultras where most of the field runs through the night. Its format, terrain, and support model shape the kind of preparation required: not just fitness, but pacing discipline, nutrition planning, foot care, and the ability to make good decisions under fatigue.

Preparing for a Race Like Mountain Lakes 100

The 100-mile race guide covers the format as a whole. These guides go deeper:

• Walking strategy for ultramarathons: When and how to walk by terrain, effort and cutoffs.
• Crew and aid-station strategy: Crew tables, aid stops, drop bags and runner preferences.
• Gut training for ultrarunners: A six-week practice sequence for race-day fueling.
• Tapering for ultramarathons: Plan the taper and race week around your own recovery.

Planning Notes

• Treat intermediate cutoff gates as part of the course. Build enough margin for aid stops and late-race slowdown, and verify every current gate in the official rules.
• Train for terrain-specific fatigue. Technical trails and mountain courses demand downhill durability, hiking efficiency, and reliable night lighting.
• The directory does not mark this as having simpler logistics. Confirm qualification, terrain, support, registration, medical, and withdrawal requirements before planning around it.

Event FAQs

Related Preparation

• Compare verified US 100-mile races
• Compare this race in the full 2026 calendar
• Open the 100-Mile format guide
• Open the Fixed-Distance format guide
• Compare all race formats
• Use the timed-race pace calculator
• Plan checkpoint arrivals and cutoff buffers
• Build a crew and drop-bag plan
• Build a race-specific gear checklist