Moscow Rd back route – Colonel Armstrong Tree loop from Duncans Mills

If you're looking for a road cycling route that blends challenging terrain with stunning natural beauty in Sonoma County, the Moscow Rd back route – Colonel Armstrong Tree loop from Duncans Mills delivers. This moderate 26.5-mile (42.6 km) ride, with 1180 feet (360 metres) of elevation gain, takes about 2 hours and 6 minutes to complete, making it a solid option for experienced cyclists seeking a rewarding half-day adventure.

What to expect on Moscow Rd back route – Colonel Armstrong Tree loop from Duncans Mills

This route offers a diverse journey through Sonoma County's varied landscapes. You'll navigate segments of Moscow Road, which can range from well-paved to rugged, winding through picturesque scenery and offering a quieter alternative to busier main roads. The highlight is undoubtedly the Armstrong Redwoods State Natural Reserve, where you can cycle through magnificent ancient redwood forests, including a visit to the impressive Colonel Armstrong Tree, estimated to be over 1,400 years old. Be prepared for significant elevation gains, especially if you venture into the adjacent Austin Creek State Recreation Area, making this route best suited for cyclists with good fitness.

Planning your visit

Before you head out, be aware that Moscow Road has had reported access issues and closures due to repairs, so check local conditions. While the Armstrong Redwoods State Natural Reserve offers flat, paved roads suitable for cycling, bicycles are restricted to these paved and service roads within the reserve. Duncans Mills itself is a charming, reconstructed sawmill town with shops and restaurants, offering a pleasant starting and ending point for your ride. Parking is generally available in Duncans Mills, but it's always wise to arrive earlier on busy days.

Trail details

• Distance: 26.5 miles (42.6 km)
• Elevation gain: 1180 feet (360 metres)
• Difficulty: moderate
• Estimated time: 2 hours and 6 minutes