Altra has partnered with Trail Sisters for its 2,021 Hours for the Planet project. The brands invite communities to celebrate Earth Day through the month of April by volunteering time toward trail maintenance and cleanup to meet or exceed 2,021 collective hours of trail improvement.

Altra will plant a tree through One Tree Planted for every trail clean-up picture posted to Instagram (#AltraCleanPlanetPromo, up to 5,000 post shares). The companies are also offering discounts for participants who register cleanup hours on and are eligible to win gear from both brands, including Altra’s Timp 3 trail shoe.

“Our natural trails are so important to us as runners, and we are thrilled to partner with Trail Sisters and One Tree Planted to help protect the places we love the most,” said Shanna Burnette, head of global community and partnerships, Altra. “Our goal for trail cleanup hours is ambitious, but we have full faith in our communities and are excited to do our part to protect and preserve our trails.”

“With the increased trail activity over the past year, we see more and more litter,” said Trail Sisters founder, Gina Lucrezi. “April is the perfect time to remind everyone of their duty to protect and take care of these playgrounds they regularly enjoy. We’re excited to partner with Altra to beautify and preserve the trails that hold a special place in our hearts, so they are just as beautiful and treasured a hundred years from now.”

For more information, go here.