Gross Reservoir – Walker Ranch Loop Trailhead loop from First Baptist Church

The Gross Reservoir – Walker Ranch Loop Trailhead loop from First Baptist Church is a challenging gravel biking route, spanning 17.7 miles (28.4 km) with a significant 2689 feet (820 metres) of elevation gain, typically taking around 2 hours and 41 minutes. Rated difficult, this loop is perfect if you're seeking a demanding ride with diverse terrain and rewarding views.

What to expect on Gross Reservoir – Walker Ranch Loop Trailhead loop from First Baptist Church

You'll encounter a mix of paved roads, crushed granite, and natural surface singletrack, making it a true gravel biking adventure. The route winds through attractive woods, open meadows, and riparian environments, offering stunning Colorado scenery and expansive panoramas, especially near Gross Dam Road with picturesque views of Gross Reservoir. Be prepared for breathtaking hill climbs, some with gradients up to 14%, and a notorious 'hike-a-bike' section on a steep, stair-stepped descent to South Boulder Creek that is considered unrideable. This trail demands very good fitness and advanced riding skills, making it ideal for experienced gravel bikers looking for a true adventure.

Planning your visit

While specific parking details for the First Baptist Church starting point aren't provided, be aware that popular trailheads in the Boulder area can fill up quickly, so an early start is often advisable. The challenging nature of the route, including significant climbs and technical sections, means carrying ample water is crucial, especially during warmer months. Given the varied terrain and potential for pushing your bike, ensure your gear is in top condition for this demanding ride.

• Distance: 17.7 miles (28.4 km)
• Elevation gain: 2689 feet (820 metres)
• Difficulty: difficult
• Estimated time: 2 hours and 41 minutes