Conquering the Mount Sentinel M Trail: Tips and Tricks

The Mount Sentinel M Trail is Missoula's most iconic climb — a steep, relentless 1,500-foot ascent to the famous concrete 'M' overlooking the city and the Clark Fork River valley. While primarily a hiking trail, mountain bikers tackle the lower sections and the thrilling descent for a lung-busting workout with the best views in town. Here's how to conquer it.

The Challenge

The M Trail gains 1,500 feet in just over a mile. That's an average grade of about 28%, with some sections even steeper. It's not a trail you ride for speed — it's a trail you ride for the challenge and the reward. Most riders will hike-a-bike portions of the climb.

Preparing for the Climb

Build your fitness on easier trails first. Pattee Canyon and Blue Mountain are great training grounds. When you're ready for the M Trail, start early in the morning when it's cooler. Bring plenty of water — the south-facing slope gets hot in summer. Use a low gear and pace yourself.

The Descent

The descent is where the M Trail rewards mountain bikers. The steep, technical trail drops quickly through switchbacks and rocky sections. It's not for beginners — the steepness and loose terrain require confident bike handling. Use your brakes judiciously and pick your lines carefully.

Beyond the M

For expert riders, the trail continues above the M to the summit of Mount Sentinel. This upper section is steeper and more technical, with significant exposure. Only attempt this if you're an experienced mountain biker comfortable with steep, technical terrain.

Best Time to Ride

The M Trail is best in spring and fall when temperatures are moderate. Summer afternoons are brutally hot on the south-facing slope. Winter riding is possible but requires fat bikes and careful attention to ice conditions. Sunrise rides offer the best lighting and coolest temperatures.

Trail Etiquette

The M Trail is heavily used by hikers, especially on weekends. Yield to hikers, slow down, and be prepared to stop. Consider riding early in the morning or on weekdays to avoid crowds. Always announce your presence when approaching hikers from behind.