Northwest Trail Alliance’s Trail Sustainability Institute (TSI) wrapped up its spring training season with an Advanced Trail School: Shaping and Maintaining Jumps, held at Gateway Green on Sunday, April 5th.
Led by guest instructor Mark Rainha — who serves on the Gateway Green Local Stewardship Team and brings years of experience building trails and jump lines across the country, including for the X Games — the session offered participants a rare opportunity to learn from an incredibly skilled professional. His technical expertise and approachable teaching style made a lasting impact, and NWTA is incredibly fortunate to have his leadership supporting the local mountain bike and BMX community.
The day focused on the wood-lipped jump line at Gateway Green, where participants gained hands-on experience in the essential work that keeps jumps safe, functional, and fun. Key skills included adding and compacting dirt, shaping transitions by shaving for a consistent slope, and understanding the critical differences between takeoffs and landings. The group also explored the importance of using quality clay, and how to adapt when ideal materials aren’t available.
Beyond the technical skills, participants built a deeper understanding of jump design by considering the needs of different users, including BMX riders, dirt jumpers, and mountain bikers of varying skill levels. The progression between wood lips and dirt lips was also a key discussion point, helping riders and builders think intentionally about how features evolve.
Throughout the day, the atmosphere was collaborative, fun, and relaxed. Participants asked thoughtful questions, shared ideas, and engaged in productive discussions that enriched the learning experience for everyone involved.
This Advanced Trail School marks the conclusion of TSI’s training season — but more opportunities are on the horizon. Be sure to keep an eye out for new classes coming this fall!