South Lake — Bishop

This route is considered extremely challenging, often ranked among the toughest climbs in the U.S. It features significant elevation gain, climbing nearly 1,500 to 1,766 meters (4,900 to 5,800 feet) to an altitude of almost 3,000 meters (10,000 feet). Expect sustained climbs with sections reaching 10-15% grade, and be prepared for the reduced oxygen levels at higher elevations.

The route is largely paved. While the initial miles on Highway 168 can be straight and may lack a dedicated shoulder, the road quality significantly improves after turning onto South Lake Road. This section, rebuilt in May 2020, is described as excellent or 'glassy,' offering a smooth ride through the most scenic part of the climb.

The route offers stunning views of the Eastern Sierra Nevada. You'll pass through a wide canyon, enter the beautiful Sierra Mountains and Inyo National Forest, and eventually reach the picturesque South Lake, nestled in the mountains. Look for aspens at higher elevations, which provide spectacular fall colors in October.

The best time to cycle this route is typically from late spring through early fall, when the roads are clear of snow and the weather is most favorable. October is particularly beautiful for fall foliage, but be prepared for cooler temperatures at higher altitudes. Always check weather and road conditions before you go, as high-altitude areas can experience sudden changes.

You can typically find parking in Bishop, which serves as the starting point for the climb. Specific parking areas may vary, so it's advisable to check local resources like bishopvisitor.com for the most current information on parking availability and regulations.

Generally, no specific permits or fees are required for road cycling on paved public roads within the Inyo National Forest. However, if you plan to venture onto specific trails or engage in other activities, it's always best to check the official Inyo National Forest website for any current regulations or requirements.

While the route is a paved road cycling climb, dogs are generally allowed on leash in the Inyo National Forest. However, this is a very strenuous road cycling route, and bringing a dog along, especially for the full climb, may not be practical or safe. Always ensure your dog is on a leash and that you clean up after them.

Yes, the route briefly intersects with several other paths. You'll find sections that cross or run alongside the Tyee Lakes Trail, Rainbow Pack Station Trail, East Bishop Creek Road, Buttermilk Road, North Main Street, Power Line Road, and Green Lake Trail.

Given the difficulty and high altitude, you should bring plenty of water and nutrition, layers of clothing for varying temperatures, sun protection, a bike repair kit, and a fully charged phone. Due to the long and fast descent, ensure your brakes are in excellent condition.

Absolutely. With its significant elevation gain and summit at nearly 10,000 feet, the South Lake — Bishop route is a popular choice for high-altitude acclimatization and training, even for professional riders. The reduced oxygen levels at the top provide an effective training stimulus.

Given the sustained difficulty, pacing yourself is crucial. The initial miles on Highway 168 can be less inspiring, but the scenery dramatically improves on South Lake Road. Many experienced riders focus on conserving energy early on to fully enjoy the stunning final ascent to South Lake. Be prepared for a long, fast descent requiring good braking control.