A Look at the 2025 Leadville 100 Pro Bike Checks – Part 2
The 2025 Leadville 100 isn’t just a race — it’s a showcase of some of the best endurance bikes on the planet. Part 2 of the pro bike checks gives us a closer look at the setups riders are trusting for this grueling 100-mile challenge.
Frame and Ghttp://2025 Leadville 100 pro bike checks: Part 2eometry
Most pros are sticking to lightweight carbon frames, often with slightly slacker geometry for stability on descents. It’s a smart choice when you’ve got hours in the saddle over mixed terrain. Personally, I think the geometry here feels similar to some modern marathon XC bikes — efficient but comfortable enough for the long haul.
Drivetrain Choices
There’s a noticeable trend toward 1x setups with wide-range cassettes. This gives riders simplicity and fewer parts to worry about in such a long race. A couple of athletes even opted for slightly smaller chainrings to save their legs on the steeper climbs.
Wheel and Tire Setups
Most wheels are carbon, paired with fast-rolling tires in the 2.2–2.4 inch range. Many pros are running inserts for added protection, which makes sense given the rocky sections of the Leadville course. I’ve ridden similar setups on long mountain days — they really help reduce pinch flats.
Cockpit and Comfort
Lightweight handlebars and stems keep things stiff but not overly harsh. Almost everyone has lock-on grips for security, and some riders are using suspension seatposts to take the sting out of rougher sections.
Final Thoughts
The 2025 Leadville 100 pro bikes are all about finding that balance between weight, comfort, and reliability. The choices here aren’t flashy — they’re practical. And in a race like Leadville, that’s exactly what matters.