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Delaware Valley

MammothMarch Delaware Valley is sold out

To enter our 2024 waiting list, check out this link. We will notify you in case additional tickets become available (first come, first served) and keep you posted on future editions.

Known for its 5,656 acres of pristine fields, woodlands and natural beauty, Fair Hill Natural Resources Management Area was a picture-perfect spot to host our 20-mile premiere in 2023. MammothMarch returns to the Delaware Valley on June 15, 2024.

Bordered by Pennsylvania to the north and less than half a mile west of Delaware, Fair Hill was previously owned by William duPont, Jr., an avid equestrian rider who acquired the farmland to enjoy riding as well as fox chasing. Once one of the largest private land holdings in the east, Fair Hill is now all yours to conquer!

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At a glance


Date: Saturday, June 15, 2024, 6:45 am

Location & venue (start/finish): Fair Hill NRMA, 4640 Telegraph Rd, Elkton, MD 21921

Local Partners:

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 with 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 – 7:00 a.m. with the majority coming back in just about 8 hours. However, we will have our finish line open for the ones that need a bit more time.

Venue (start/finish):

Fair Hill Natural Resources Management Area/Cecil County Fair, 4640 Telegraph Rd, Elkton, MD 21921


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.

Merchandise: Our 2024 merchandise collection is available right here.


Route: The single-circuit loop covers 20 miles of scenic trails inside the beautiful and remote Fair Hill Natural Resources Management Area. The final route will be made available for download around 2 weeks prior to the event. Take a look at our 2023 hiking route right here.

Total elevation gain: Around 1,700 ft.

Terrain: Mainly unpaved hiking trails, dirt trails, forest floor, gravel paths, open fields.

What are you waiting for? Click here to sign up for the adventure of a lifetime.


Please check out more details in our FAQ section or send us an e-mail  at

The route will be made available for download, including GPS coordinates 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 of course adapt it to local conditions at short notice..

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