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Sonoma County

Monte Rio – Meyers Grade Road loop from Duncans Mills

Routes
Road cycling routes
United States
California
Sonoma County

Monte Rio – Meyers Grade Road loop from Duncans Mills

Hard

3.0

(11)

93

riders

Monte Rio – Meyers Grade Road loop from Duncans Mills

05:50

91.3km

1,680m

Road cycling

Hard road ride. Very good fitness required. Mostly well-paved surfaces and easy to ride. The starting point of the route is right next to a parking lot.

Last updated: April 19, 2026

Tips

The surface for a segment of your route may not be suitable

Some segments of your route comprise a surface that may not be suitable for your chosen sport.

After 48.9 km for 65 m

Waypoints

A

Start point

Parking

Get Directions

3.25 km

Russian River

Lake

2

4.04 km

Villa Grande & 3D Surf Mural

Highlight • Settlement

Small village with a big name, and an even bigger mural with integrated 3D surfer

Tip by

3

5.31 km

Most people know the river beach in Monte Rio before the bridge when they come floating down the Russian River in kayaks, tire tubes or other inflatables on warm summer …

Tip by

4

5.93 km

Monte Rio

Highlight • Beach

Great beach on the north shore of the Russian River, both sides of the bridge

Tip by

55.5 km

Salt Point State Park

Nature Reserve

6

64.6 km

Meyers Grade Road

Highlight (Segment) • Climb

Well, this one is tough. Two miles of mostly 12-15% with a few 18% grades. Luckily not a lot of traffic and the cows cheer you on.

Tip by

7

82.6 km

Bridgehaven & Russian House

Highlight • Restaurant

Actual Russian cuisine on the south side of the Russian River bridge.

Tip by

8

83.1 km

River Road along the Russian River Estuary

Highlight (Segment) • River

Western end of River road, closely parallel to the wide estuary of the Russian River, with sweeping views around every turn

Tip by

9

89.2 km

Duncans Mills

Highlight • Settlement

Historic town-turned-tourist mall on both sides of the highway.

Tip by

10

90.5 km

Casini Ranch & Campground

Highlight • Rest Area

Tucked in a bend of the Russian River on the opposite bank of River Road, that's now rarely accessed by cars as Moscow Road became a dead-end after the erosion …

Tip by

B

91.3 km

End point

Parking

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Way Types & Surfaces

Way Types

62.8 km

20.9 km

7.69 km

< 100 m

Surfaces

51.0 km

38.7 km

1.71 km

< 100 m

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Elevation

Elevation

Nothing selected – click and drag below to see the stats for a specific part of the route.

Highest point (520 m)

Lowest point (0 m)

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Weather

Powered by Foreca

Thursday 25 June

18°C

11°C

-- %

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Description

If you're an experienced road cyclist looking for a serious challenge with incredible rewards, the Monte Rio – Meyers Grade Road loop from Duncans Mills is absolutely worth your time. This difficult road cycling route spans 56.8 miles (91.3 km), packs in a staggering 5522 feet (1683 metres) of elevation gain, and typically takes around 5 hours and 49 minutes to complete. It's a premier choice for those seeking a demanding ride through some of Sonoma County's most stunning landscapes.

What to expect on Monte Rio – Meyers Grade Road loop from Duncans Mills

This route is a masterclass in varied Sonoma County landscapes. You'll start near the Russian River, then quickly face the legendary Meyers Grade climb. This 1.9-mile ascent averages 8.8%, but don't be fooled; you'll hit sections averaging 13.1% for three-quarters of a mile, with pitches up to 18%. As you grind up, you'll be rewarded with stunning views of the Pacific Ocean, transitioning later into dense redwood forests and open ridgetops. It's a demanding ride, requiring very good fitness, but the diverse scenery and exhilarating descent make it a memorable experience for advanced cyclists.

Planning your visit

Starting from Duncans Mills, you'll want to plan your ride for good weather, as the Sonoma Coast can be unpredictable. The Meyers Grade climb itself is a two-lane road in excellent condition with minimal traffic, though it has no shoulder, so stay alert. This loop is best tackled by cyclists with very good fitness who are comfortable with extensive climbing and long durations in the saddle. Consider the best months for road cycling in Sonoma County to ensure optimal conditions.

Trail details

  • Distance: 56.8 miles (91.3 km)
  • Elevation gain: 5522 feet (1683 metres)
  • Difficulty: difficult
  • Estimated time: 5 hours and 49 minutes

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