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The best twisty roads around Saint Helena

23 twisty stretches · 170 km of twisty road within reach of Saint Helena — joined from OpenStreetMap geometry and scored by NavForge's map pipeline. Paved, unpaved and flowing stretches ranked separately.

Every twisty stretch of road within 60 km of Saint Helena, California — whole roads joined from OpenStreetMap geometry, walked a kilometre at a time and ranked by twisty kilometres. The best sealed one is Sage Canyon Road (CA 128) · Saint Helena → Spanish Flat with 12.0 twisty km. Click a road to see it on the map above, or take the GPX.

23
Stretches within 60 km
170 km
Twisty kilometres
99
Tight corners
7 / 3
Sealed / unsealed shown
Sage Canyon Road (CA 128) · Saint Helena → Spanish Flat

Paved twisty
Paved 100%

17.0 km · 12.0 twisty km · best km 9 · ~2 tight corners
km 4–21 of 62.8

Score 7 · Moderate

Monticello Road (CA 121) · Atlas → Napa

Paved twisty
Paved 100%

19.0 km · 12.0 twisty km · best km 11 · ~2 tight corners · 1 hairpins
km 1–20 of 20

Score 8 · High

Lake County Highway · near Calistoga

Paved twisty
Paved 100%

12.9 km · 10.9 twisty km · best km 11
km 18.1–31 of 74.8

Score 9 · High

Trinity Road · near Glen Ellen

Paved twisty
Paved 100%

7.0 km · 7.0 twisty km · best km 11 · ~10 tight corners
km 0–7 of 7.5

Score 10 · High

Sonoma Mountain Road · Glen Ellen → Rohnert Park

Paved twisty
Paved 100%

7.0 km · 6.0 twisty km · best km 9 · ~2 tight corners
km 0–7 of 12.2

Score 8 · High

North San Pedro Road · near San Rafael

Paved twisty
Paved 100%

6.9 km · 4.9 twisty km · best km 12 · ~5 tight corners
km 0–6.9 of 6.9

Score 9 · High

Los Alamos Road · near Santa Rosa

Paved twisty
Paved 100%

3.5 km · 3.5 twisty km · best km 10
km 1.1–4.6 of 4.6

Score 10 · High

CA 175 · Mount Hannah Lodge → Cobb

Flowing
Paved 100%

16.0 km · 6.0 twisty km · best km 10 · ~2 tight corners
km 9–25.1 of 31.7

Score 7 · Moderate

Marshall-Petaluma Road · Marshall → Petaluma

Flowing
Paved 100%

17.6 km · 5.6 twisty km · best km 8
km 0–17.6 of 17.6

Score 6 · Moderate

Shoreline Highway (CA 1) · Tomales → Marshall

Flowing
Paved 100%

11.0 km · 4.9 twisty km · best km 9
km 193–204 of 265.7

Score 6 · Moderate

Calistoga Road · Calistoga → Santa Rosa

Flowing
Paved 100%

9.1 km · 4.1 twisty km · best km 9 · ~1 tight corners
km 0–9.1 of 11.4

Score 6 · Moderate

Lucas Valley Road · Nicasio → Fairfax

Flowing
Paved 100%

10.0 km · 4.1 twisty km · best km 11
km 1–11 of 16.5

Score 7 · Moderate

Morgan Valley Road · Knoxville → Clearlake

Flowing
Paved 100%

12.9 km · 3.1 twisty km · best km 7
km 3.1–16 of 22.2

Score 5 · Moderate

Westside Road · Windsor → Forestville

Flowing
Paved 100%

13.8 km · 3.0 twisty km · best km 8 · ~1 tight corners
km 6–19.8 of 19.8

Score 6 · Moderate

Shoreline Highway (CA 1) · Inverness → Point Reyes Station

Flowing
Paved 100%

8.0 km · 3.0 twisty km · best km 10 · ~1 tight corners
km 212.1–220 of 265.7

Score 7 · Moderate

Sir Francis Drake Boulevard · Seahaven → Point Reyes Station

Flowing
Paved 100%

14.9 km · 2.9 twisty km · best km 7
km 14.2–29 of 29.6

Score 4 · Moderate

Bottle Rock Road · Cobb → Glenview

Flowing
Paved 100%

6.0 km · 2.0 twisty km · best km 9
km 6–12.1 of 17.4

Score 6 · Moderate

Sir Francis Drake Boulevard · Lagunitas → Point Reyes Station

Flowing
Paved 100%

8.0 km · 1.9 twisty km · best km 8
km 20–28 of 33.1

Score 6 · Moderate

Fountaingrove Parkway · near Santa Rosa

Flowing
Paved 100%

11.5 km · 1.5 twisty km · best km 7 · ~2 tight corners · 1 hairpins
km 0–11.5 of 11.5

Score 5 · Moderate

Rose Drive · Vallejo → Benicia

Flowing
Paved 100%

5.6 km · 1.0 twisty km · best km 7 · ~1 tight corners
km 0–5.6 of 5.6

Score 5 · Moderate

Geysers Road · Cloverdale → Jimtown

Unpaved & 4WD
Mixed 12%

41.6 km · 38.6 twisty km · best km 11 · ~20 tight corners
km 5–46.6 of 46.6

Score 9 · High

Sweetwater Springs Road · Guerneville → Windsor

Unpaved & 4WD
Gravel/Dirt 0%

16.4 km · 16.4 twisty km · best km 13 · ~32 tight corners
km 0–16.4 of 16.4

Score 10 · High

Pine Flat Road · Cobb → Jimtown

Unpaved & 4WD
Gravel/Dirt 0%

17.0 km · 16.0 twisty km · best km 12 · ~18 tight corners
km 0–17 of 19

Score 10 · High

Twisty roads near here

Glen Ellen 14 km
Atlas 18 km
Napa 21 km
Santa Rosa 23 km
Jimtown 42 km
Knoxville 44 km
Marshall 55 km
Clearlake 57 km
Point Reyes Station 58 km
Hamilton Flat 60 km

All twisty roads in California · Road geometry © OpenStreetMap contributors (ODbL), scored by NavForge’s map pipeline. “4WD track — check access” means OpenStreetMap does not say whether the track is gated. Get NavForge Premium to route through these roads automatically — fully offline.

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