Peña Blanca Lake & Upper Thumb Rock via Ruby-Nogales Road

The initial approximately 9 miles of the Ruby-Nogales Road (Paved Section) from Interstate 19 to Peña Blanca Lake and Upper Thumb Rock Picnic Area are paved, offering a ride through rolling terrain in the foothills. Beyond the lake, the road transitions into a rough dirt road (Forest Road 39) with large chunky gravel, washboarding, and wash crossings, making it unsuitable for standard road bikes.

No, only the first 9 miles of Ruby Road (AZ 289) leading up to Peña Blanca Lake and Upper Thumb Rock Picnic Area are paved and suitable for road cycling. Beyond the lake, the road becomes a rough dirt track, requiring high-clearance 4WD vehicles and is not recommended for road bikes.

You'll experience picturesque high desert scenery, including grassy savannas dotted with oak trees, yucca, and prickly pear cactus. The route offers views of Peña Blanca Lake nestled among oak-dotted hills and limestone bluffs, with the Atascosa and Pajarito Mountains in the background. Keep an eye out for wildlife such as javelina, white-tailed deer, and coati.

Parking is available at Peña Blanca Lake and Upper Thumb Rock Picnic Area. For the paved section, you can start from Interstate 19 north of Nogales and follow Ruby Road (AZ 289) towards the lake.

The route is located within the Coronado National Forest. While there are generally no specific permits required for cycling on established roads, some recreation sites within the forest may require a fee. It's always best to check the official USDA Forest Service website for the latest information on fees and regulations for the specific area you plan to visit.

When cycling in Coronado National Forest, stay on designated roads and trails. Respect wildlife, pack out all trash, and be aware of fire restrictions. Always yield to hikers and equestrians. For detailed and up-to-date regulations, consult the official USDA Forest Service website for the Coronado National Forest.

Dogs are generally allowed on trails and roads within the Coronado National Forest, but they must be kept on a leash at all times. Please ensure you clean up after your pet to help keep the area pristine.

The high desert climate means spring and fall offer the most pleasant temperatures for cycling. Summers can be very hot, and monsoon season (typically July-September) can bring heavy rains, making unpaved sections slippery and rutted. Winters are generally mild but can be cool.

The paved section of Ruby Road leading to Peña Blanca Lake and Upper Thumb Rock Picnic Area is relatively remote. Peña Blanca Lake offers basic facilities like restrooms and picnic areas. It's advisable to carry all necessary water, snacks, and supplies with you, as there are no cafes or stores directly on this cycling route.

Yes, the route also passes through sections of the Calabasas Campground Road, Lower Walker Canyon Road, Calabasas Tank, Upper Walker Canyon Road, Calabasas Ridge, and Bellota Tank.

Yes, a pavement rehabilitation project on the paved section of Ruby Road (AZ 289) from Interstate 19 to Peña Blanca Lake is scheduled from Fall 2025 to Spring 2026. This may cause temporary closures or delays, so it's wise to check for updates before your ride.