Alta Trail

The Alta-Bajada Loop offers a true desert mountain biking adventure, winding through a rugged landscape dotted with cacti and offering expansive views. You'll encounter technical, rocky terrain with steep climbs and descents, particularly on the Alta Trail's switchbacks. The route provides a deep dive into the South Mountain ecosystem, showcasing its resilience and natural beauty, with stunning vistas of the Phoenix city center as a backdrop.

This moderate 8.0-mile (12.9 km) loop involves a significant 1496 feet (456 metres) of elevation gain, typically taking about 1 hour and 22 minutes. It's best suited for experienced mountain bikers ready for a challenge; less experienced riders should be prepared to walk their bikes on some technical sections. Always carry ample water, especially in warmer months, and consider long pants or shin guards to protect against trailside cacti.

What makes the Alta-Bajada Loop stand out are its technical challenges and the panoramic views from the ridgeline, making it a top choice for advanced mountain biking trails in the region. The Bajada Trail section, with its large rocks and steep exits out of washes, adds to the route's reputation for demanding terrain. For a different approach, you can park at the San Juan lookout and ride the road up, turning the loop into a more downhill-focused experience.