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one tree planted
for every hiker

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MammothMarch cares deeply about our planet's future.


In addition to creating low- to zero-waste events, we want to give back to nature. That's why we're planting one tree for every registered hiker to support reforestation projects in the US!


Trees clean our air and water, create habitats for biodiversity, contribute to our health and wellbeing, and create jobs for social impact. 

We can't think of a better partner than OneTreePlanted, a 501(c)(3) nonprofit dedicated to global reforestation by planting trees to restore nature & biodiversity. 


Together, we want to raise awareness about the importance of trees, offer businesses and events like ours a simple sustainability solution, and motivate younger generations to do something positive for the environment.

Help us make sure that each step taken is one closer to a healthier planet!

Our 2023 donation

... goes to a new MammothMarch state: Oregon suffered from wildfires back in September 2020, where the Archie Creek, Holiday Farm, Beachie Creek, and Riverside fires burned 100,000+ acres. We are supporting a restoration project with the planting of 14,735 seedlings, part of a multi-year effort to rehabilitate those Bureau of Land Management lands to improve water quality and support wildlife, fisheries, wilderness, botany, recreation, and late successional ecosystems in these regions. The plantings begin the re-establishment of native forests and the targeted tree species mix represents that which was historically present. 

Thank you to all 14,735 registered MammothMarch participants in 2023!

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Our 2022 donation

We have planted a total of 5,441 trees (one for every registered hiker) in the Farmington Forested Wetland Restoration project in western Trumbull County, Ohio! Restored forested communities were seeded with a native herbaceous seed mix and planted with a diverse assemblage of native trees and shrubs.

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