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MammothMarch Oregon 2025

After a sold out first edition in 2024, MammothMarch will be back at Silver Falls State Park on March 22, 2025!

Nestled in the foothills of Oregon’s Cascade Mountains, the Beaver State’s biggest State Park is a standout scenic treasure that features 10 impressive waterfalls and a dense forested landscape. Our 20-mile hiking route will put everything on display that the “crown jewel” of the Oregon Park system has to offer.

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Located just 90 minutes south of Portland and 30 minutes east of Salem, MammothMarch Oregon makes for the picture-perfect hiking getaway.

Master the challenge and spend a beautiful day hiking a single-circuit 20-mile loop. Getting your finisher medal, you will be exhausted, but proud and happy... as well as part of our amazing community of nature-lovers, hikers, and MammothMarch addicts!

At a glance


Date: Saturday, March 22, 2025

Location & venue (start/finish): Silver Falls State Park – South Falls Day Use Area, Silver Falls Hwy SE, Silverton, OR 97381

Dogs: Please note that dogs are not allowed at our Oregon edition.

Distance: 20 miles in 8 hours

There is no timekeeping, there are no failures, we only recognize the incredible courage it takes to rise to our challenge. Every participant completing the distance will be awarded their finisher medal and considered a winner!

Starting time: You can choose from several time slots as early as 7: 15 am with limited capacity when signing up. This ensures the most remote hiking experience as a maximum of 5 hikers will cross the starting line at the same time. The first ones will head out between 7: 15 – and 7:30 a.m. with the majority coming back in just about 8 hours. However, we will have our finish line open a little bit longer for the ones that need a bit more time – cut off time at either aid station will be sunset (meaning if you’re hiking at a pace that won’t let you finish before sunset, we will provide a shuttle service back to the venue).

Parking: Complimentary parking will be available on site.

Aid/refreshment stations:  There are water stops and aid stations along the route (approximately positioned every 5-7 miles apart) providing toilets, food, and drinks for all participants. These refreshments are included in the cost of your ticket and vary between each station, offering water, energy drinks, electrolytes, fruits, cereal/protein bars, sandwiches and more.


Certificates: All finishers will receive their personalized certificate after crossing the finish line. For the ones who drop out, we will issue certificates stating the mileage covered.

Finisher medal/wall of fame: For all participants finishing MammothMarch.

Hiking Pass: MammothMarch Hiking Passes will be made available for all new participants. All participants from previous editions or different MammothMarch events should bring their Hiking Pass to collect their 2025 stamps on site.

Merchandise: Our 2025 merchandise collection will be available later in 2024.

Route: The single-circuit loop covers 20 miles of scenic trails and gorgeous waterfalls inside Oregon’s biggest State Park, featuring trails such as Canyon Trail, Perimeter Trail, Ten Falls Trail, Buck Mountain Loop. The final route will be made available for download around 2 weeks prior to the event. Take a look at our 2024 route right here for reference.

Total elevation gain: Around 2,900 ft

Terrain: Mainly unpaved hiking trails, dirt trails, gravel roads, forest floor

What are you waiting for? Sign up here to enter not your average hike.

Please check out more details in our FAQ section or contact us

The route will be made available approximately 2 weeks prior to the event. Please note that the route is preliminary and may be adjusted due to weather issues, official directives and/or organizational matters. The route will be marked 1-2 days prior to event day. Should we notice parts of the route being inaccessible, extremely wet/muddy we will adapt it to local conditions at short notice.

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