Boise’s Trail Network Is Growing
Boise’s trail network is growing! A new downhill-only trail in Hulls Gulch, a new flow trail at Eagle Bike Park, and the inclusive trail system at Avimor! There’s a lot to be excited about. Here's a quick look at the fresh dirt being added to our local riding scene.
I just got back from vacation and I’m still in that weird limbo between unpacking my bags and remembering how to function like a normal human again. But while I’ve been off the bike, trail builders haven't slowed down one bit. In fact, there’s some fresh trail work happening right now all around the Treasure Valley!
Sideshow Trail – A Downhill Only Trail Coming 8th Street
One of the most exciting developments in the Boise trail system right now is the construction of Sideshow Trail, a new downhill-only mountain bike trail being built right off 8th street, near Hulls Gulch. This project is being led by Integrated Trail LAB, a professional trail-building team based in Bozeman, Montana, known for creating purpose-built mountain bike trails across the region.
Sideshow is designed specifically for downhill bike traffic. Once completed, it will be 1 of 2 mountain bike only trails in the Boise foothills. Bucktail being the only MTB only trail in Boise right now. The trail is located on BLM land just off of Corrals trail (on the 8th street side) and runs parallel to Bobs Trail. It’s worth noting that the trail will also be seasonally closed during the winter months to protect the tread and maintain its integrity.
The City of Boise is funding the project with a budget of approximately $150,000, and the trail is currently slated for completion around the end of June 2025. Once open, Sideshow will offer riders a new dedicated descent in the Hulls Gulch area with actual bike berms and jumps!
Check out the photo gallery below for a drove POV at the construction progress, and I’ve also included links to a few local news reports if you want to dive deeper into the details.
News Articles
City of Boise Post
Ridge to Rivers Post
KTVB Post
New Beginner-Friendly Flow Trail at Eagle Bike Park
There’s a new trail taking shape at Eagle Bike Park, and while it hasn’t officially been named yet (from what I could find), it’s already starting to feel like a finished product. This new addition runs parallel to Hell Mary, and based on how it’s riding so far, it’s clearly been built with beginner and intermediate riders in mind.
I’ve been keeping an eye on this one for the past few months, and it looks like it’s nearly ready to go. The trail crew recently removed the gate that was blocking the entrance, though there’s still no official trail marker in place just yet. That said, the work speaks for itself and I love it. It's wide, has sweeping berms, a smooth flow, and a layout that feels perfect for riders looking to build confidence on a well-constructed descent without the jumps on Hell Mary.
I’ve included GoPro footage from my second ride down the trail a few weeks ago if you want to check it out and get a feel for how it flows.
Project Inclusive – Building Trails for Everyone
The third and final trail project worth highlighting is Project Inclusive, an initiative from SWIMBA that’s focused on increasing trail accessibility. The project aims to offer a more inclusive outdoor experience by designing trails that accommodate a wide range of abilities, while still delivering fun, flow, and connection to the broader mountain bike community.
Project Inclusive is a important step forward for the Boise-area trail network. Located within the Avimor trail system just outside of Boise, this project is a reminder that trail building isn’t just about adding miles, it’s about expanding access and making mountain biking more welcoming for everyone.
The trail network will ultimately include about five miles of progressive terrain, starting with a green loop that’s already been cut by the team at Titus Trails. This beginner-friendly loop features a mellow climb and a smooth downhill section, with thoughtful touches like rollover cattle guards designed specifically to make the trail accessible to adaptive riders. This loop will connect to a blue downhill trail and a black advanced loop, ensuring the system supports riders from entry-level to expert.
It’s hard to believe how much the trail network has grown since I started riding back in 2017. What used to be a handful of go-to loops is evolving into a diverse and ever-expanding system. These new trails are just the latest example of how much our local scene continues to grow and improve.
I’m genuinely excited to see projects like Sideshow, the new Eagle Bike Park flow trail, and Project Inclusive taking shape. Each one brings something unique to the table, and together they represent a community that’s investing in riders of all levels and backgrounds. Hopefully this is just the beginning of what’s to come for the Boise MTB community.
Forever Two Wheels!
-Myles
If you’ve enjoyed this post and want to support what I’m building here at Filthy Casual MTB, consider picking up something from the store. Every purchase really does help keep the blog rolling. I’m currently featuring the Trail Trash Collector coffee mug, perfect for fueling your next ride or trail day. Thanks for being here and being part of the community.
