Mountain Lakes 100

Race Details

September 20, 2025
Olallie Lake
Oregon
100M
ML-women-at-finish_JE-bc123aaf9d65397db89faa355f0ab62d

Oregon’s best supported 100-miler, Mountain Lakes 100 takes place mainly on the Pacific Crest Trail between Mt. Hood and Mt. Jefferson. This race has become well-known and loved for the
on-course support. Forget the fact that you’re running on some pretty single-track trail, past gorgeous mountain lakes… you’ll be amazed how the aid stations lift you up, get you what you need, and make sure you’re ready to move onto the next and the finish line to earn that buckle!

This race is a runnable hundred. That means it doesn’t have really big climbs like some others. There’s 11,000′ of gain over the whole 100-miles. It has a 30-hour cutoff to get the buckle.

People return again and again to this race, to run it another time and/or to volunteer once more. There’s a welcoming community vibe here that can’t be beat.

There’s also a pasta feed the night before and breakfast at the end.

Come make this your first hundred!

Share This Race!

More Races

ML-women-at-finish_JE-bc123aaf9d65397db89faa355f0ab62d
Mountain Lakes 100
100M
September 20, 2025
Olallie Lake
, Oregon
TourDeTrail_LexingtonLake-01-19b56ec60e4169257481d9c4ca1c7fd3
Tour de Trail: Lexington Lake
10K
September 20, 2025
Desoto
, Kansas
DSC08275-Edit
Flagstaff to Grand Canyon Stagecoach Line
55K
100M
September 20, 2025
Flagstaff
, Arizona

Join Now

Team Trail Sisters

Find a Coach

Colorado Springs, 
Colorado

Watch Films

Dream Trip Nepal

Dream Trip Nepal

Mira Rai

Add 1 race per line or separate with a comma.
$0.00

Claim Race

Heyo Race Director!

Once you’ve claimed your race allow 24-72 hours for our site admin to update the listing and transfer ownership to you. Once complete, you will receive an email notification and will be able to edit the race from your dashboard. 

Thank you!

Claiming races that are not yours will result in immediate termination of your account. 

Race Director Login