MammothMarch is back in Missouri!
We are excited to have once again secured the remote Weldon Spring Conservation Area and its excessive trail system for our 2026 MammothMarch Missouri edition. Hike 20 miles along a great mixture of diverse trails, such as Katy Trail and Lewis & Clark Trail featuring superb overlooks of the Missouri River.
Our single-circuit hiking loop starts and finishes at the beautiful Defiance Ridge Vineyards, located just half an hour west of downtown St. Louis.
Master the challenge and spend a beautiful day hiking 20 miles at a stretch. 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!
Signing up for the first time? Take a look at past events and what our participants say: https://www.mammothmarch.com/reviews
Secure your ticket now and take a look at what's included:
Please note that all prices are INCLUSIVE of mandatory charges, items, and fees.
Registration fees
Prices are inclusive of mandatory charges, items, and fees
MammothMarch Missouri
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Spend a beautiful day hiking and finish 20 miles in 8 hours
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$63.12
SUPER EARLY BIRD
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Register for MammothMarch Missouri$73.65
EARLY BIRD
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$84.18
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$94.71
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$105.23
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$115.76
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Contact information
- Event contact
- MammothMarch Event Team
- Website
- Visit website
