The Trails Preservation Alliance (TPA) is a Colorado based 501(c)(3) nonprofit working to protect and improve access to motorized single-track trails. We advocate for responsible OHV recreation and partner with a wide range of outdoor enthusiasts—including hikers, mountain bikers, and horseback riders—to ensure trails are shared and sustainably managed. Much of our work centers on supporting local motorcycle and ATV clubs: helping them navigate relationships with land managers, secure grant funding, engage their communities, and care for the trails through cleanup efforts and volunteer work days. At our core, we believe in collaboration, education, and keeping trails open for everyone who values them.
The Beginnings of the TPA
The Trails Preservation Alliance was officially founded in 2008 by longtime rider and advocate Don Riggle, alongside a small group of committed motorcyclists who shared a common goal: to protect and preserve motorized single-track trail riding in Colorado. In the early days, Don took the lead in writing letters, submitting comments, and articulating the group’s position on land use issues, helping give voice to a growing community of responsible riders.
To raise awareness and generate funding, the TPA team launched the Colorado 600 Trails Awareness Symposium—a multi-day event blending incredible trail riding in the Rocky Mountains with education and advocacy. The first event in 2010 set the tone for what would become a cornerstone of the TPA’s mission: not just enjoying the ride, but actively working to protect the privilege of access.
As the organization grew, dedicated volunteers and legal consultants joined the effort, allowing the TPA to expand its involvement in public processes—writing formal comments, submitting appeals, and weighing in on planning efforts such as Travel Management Plans and Records of Decision.
The TPA also began working more closely with land managers and helping motorcycle and ATV clubs across the region become more organized, connected, and effective. By supporting local clubs in their work with agencies, applying for grant funding, and engaging with their communities, the TPA helped build a stronger, more unified voice for motorized recreation in Colorado and beyond.