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Upstate New York
MammothMarch Upstate New York
We are beyond excited to bring MammothMarch back to Letchworth State Park, renowned as the “Grand Canyon of the East”. After two sold-out editions, MammothMarch Upstate New York takes place on August 9, 2025. Along our 20-mile hiking route, you will conquer one of the most scenic areas in the Eastern US.
Our single-circuit loop leads along the Genesee River, through lush forests, features spectacular waterfall and gorge views, and has quickly become a fan favorite among our nationwide hiking community.
Several times voted as “Best Park in the United States”, Letchworth is located just an hour east of Buffalo/south of Rochester and will once again be one of the most scenically magnificent MammothMarches in our 2025 calendar.
At a glance
Date: Saturday, August 9, 2025
Location & venue (start/finish): Castile Entrance / Letchworth State Park, 6787 Denton Corners Rd, Genesee Falls, NY 14427
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 6:45 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 6:45 a.m. – 7:00 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).
Participant tracking - NEW: To comply with State Park regulations, all participants will wear a bib number tracking their progress throughout the day at various touchpoints (e.g. start/finish, aid stations).
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: Check out our Upstate New York event store right here. Our full 2025 merchandise collection will be available soon.
Route: TThe single-circuit loop covers 20 miles of everything Letchworth State Park has to offer, including the famous and scenic waterfall views. The preliminary route (used in previous years) can be found right here.
Total elevation gain: Around 2,300 ft.
Terrain: A great mix of everything: Paved and 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 contact@mammothmarch.com.