-->
ultrasignup.com

Plain Endurance Runs

calendar_today 19 Sep, 2026

directions_run Running

language Official Website

sell $100.00 – $135.00

Plain Endurance Runs

About the Event

The Plain races, set against the dramatic backdrop of Washington's Cascade Mountains, offer an unparalleled challenge for endurance runners seeking remote and rugged terrain. Nestled within the Lake Wenatchee, Entiat, and Chelan ranger districts, this self-supported adventure spans approximately 85 miles of USFS trails and 20 miles of forest service roads, weaving through some of the most secluded landscapes in North America.
Elevation changes are a defining feature of The Plain races, with runners tackling around 21,000 feet of cumulative ascent and descent. This course is not for the faint-hearted; it demands rigorous training focused on long stretches of self-sufficiency across challenging terrain. Participants must carry all their food, water (supplemented by natural sources like creeks and rivers along the route), and necessary gear from start to finish or after a single resupply point located around 100 kilometers into the journey.
The Plain races are more than just an athletic challenge; they also serve as a vital fundraiser for local Search and Rescue teams and military veteran support groups. By participating, runners contribute directly to these essential community services while immersing themselves in breathtaking mountain scenery that includes dense forests, alpine meadows, and stunning vistas of crystal-clear lakes.
Qualification standards are stringent, requiring entrants into the 100-mile event to have completed a similarly demanding trail race or The Plain's own 100K. For those aiming for the shorter but equally formidable 100K distance, while no formal qualification is required, it’s advised that runners possess experience in challenging races of at least 50 miles and demonstrate significant levels of self-reliance.
In adherence to safety protocols, should circumstances such as wildfire closures prevent the event from taking place, refunds will be issued minus a portion reserved for covering direct expenses. For detailed information about training tips, race logistics, and how your participation supports local causes, visit www.plain100.com.

Races Offered

100 Miler

Sep 19, 2026

straighten

Distance — 160.9K

terrain

Type — Running

timer

05:00

sell

$135.00

Plain 100K

Sep 19, 2026

straighten

Distance — 100K

terrain

Type — Running

timer

05:00

sell

$100.00

Weather History

These values represent the 3-year monthly averages for September in Leavenworth.

thermostat Temperature
12.7° / 26.1°
wb_sunny Feels like
11.1° / 24.2°
light_mode Avg sunshine hours
10h 49m
water_drop Avg rainfall
0.7 mm
ac_unit Avg snowfall
air Avg wind speed
6.0 km/h (Light breeze)
opacity Sweat loss rate
Moderate
terrain Course conditions
Firm and slightly soft
sunny Max UV Index
Moderate (3.5)
humidity_mid Humidity
56.2%
wb_twilight Sunrise
06:40
nightlight Sunset
19:12

About Leavenworth

Learn more about the host city, Leavenworth.

Scenic view of

Leavenworth is a resort city of about 2000 people in the North Central Cascades of the State of Washington. The Bavarian-themed architecture and dining options entice visitors year-round, as a base for roaming the surrounding mountains and the Wenatchee River, and for winter festivals of dazzling lights and snow.

Read more launch

Hotels & Places to Stay

Runner Reviews

Read what other athletes have to say about their experience at the Plain Endurance Runs.

No reviews yet

Be the first to share your experience with the community!

Suggest an edit

Spotted an error or missing detail about the Plain Endurance Runs? Help us improve.

Nearby Races

Explore other exciting events happening in this same region.

Leavenworth Marathon & Half Marathon

Leavenworth Marathon & Half Marathon

location_on Leavenworth, Washington, US

calendar_today Oct 03, 2026

Mad Meadows 50

Mad Meadows 50

location_on Leavenworth, Washington, US

calendar_today Oct 10, 2026

NW Cup #7 2026-Stevens 2026 Finals

NW Cup #7 2026-Stevens 2026 Finals

location_on Stevens Pass, Washington, US

calendar_today Sep 18, 2026

2026 Teeny-Way 50K

2026 Teeny-Way 50K

location_on Cle Elum, Washington, US

calendar_today Sep 19, 2026

Recommended for You

Hand-picked events we think you’ll love.

Warrior Women 5k

Oct 10, 2026

Warrior Women 5k

October 10, 2026 Come and join us in our 6th Annual Warrior Women Race 5k. This event is a women only racing event. It …

Read more
The Color Run | Portland 2026

Oct 10, 2026

The Color Run | Portland 2026

The Color Run is the happiest, most colorful 5K on the planet. At The Color Run, it’s not about how fast you go or how …

Read more
2026 Beaverton Half Marathon, 5/10K Presented by NIKE

Sep 19, 2026

2026 Beaverton Half Marathon, 5/10K Presented by NIKE

Beaverton Half Marathon Presented by NIKE is an AWESOME Half Marathon, 5K & 10K held in the City of Beaverton, Oregon. …

Read more
2026 Palouse Sprint Triathlon and Duathlon

Sep 12, 2026

2026 Palouse Sprint Triathlon and Duathlon

The Palouse Sprint Triathlon is a sprint distance triathlon held in Moscow, Idaho every fall. The race distance and env…

Read more

Get race deals & updates

Subscribe to our newsletter for curated race picks and discounts.