80 twisty stretches · 1,178 km of twisty road within reach of Idaho City — 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 Idaho City, Idaho — whole roads joined from OpenStreetMap geometry, walked a kilometre at a time and ranked by twisty kilometres. The best sealed one is North Bogus Basin Road with 25.0 twisty km. Click a road to see it on the map above, or take the GPX.
80
Stretches within 60 km
1,178 km
Twisty kilometres
1,982
Tight corners
11 / 13
Sealed / unsealed shown
North Bogus Basin Road
Paved twisty Paved 100%
27.0 km · 25.0 twisty km · best km 11 · ~10 tight corners · 1 hairpins
km 0–27 of 30
Score 9 · High
Ponderosa Pine Scenic Route (ID 21) · near Lowman
Paved twisty Paved 100%
18.0 km · 16.0 twisty km · best km 10
km 94–112 of 202.7
Score 8 · High
Ponderosa Pine Scenic Route (ID 21) · near Tenmile Summer Home Area
Paved twisty Paved 100%
10.0 km · 6.0 twisty km · best km 9
km 124–134 of 202.7
Score 8 · High
Banks Lowman Road · near Lowman
Paved twisty Paved 100%
6.0 km · 5.0 twisty km · best km 8
km 9–15 of 53.5
Score 7 · Moderate
Centerville Road · near Placerville
Paved twisty Paved 100%
6.0 km · 4.0 twisty km · best km 8 · ~2 tight corners
km 0–6 of 18.9
Score 7 · Moderate
Ponderosa Pine Scenic Route (ID 21) · Kirkham Hot Springs → Lowman
Paved twisty Paved 100%
7.0 km · 4.0 twisty km · best km 7
km 84–91 of 202.7
Score 6 · Moderate
Grimes Creek Road
Paved twisty Paved 100%
3.8 km · 3.8 twisty km · best km 8 · ~1 tight corners
km 19–22.8 of 22.8
Score 7 · Moderate
Old Freezeout Road · near Emmett
Paved twisty Paved 100%
3.2 km · 3.2 twisty km · best km 11 · ~2 tight corners
km 0–3.2 of 3.2
Score 11 · High
North Pierce Park Lane · near Boise
Paved twisty Paved 100%
3.0 km · 2.1 twisty km · best km 7
km 0–3 of 6.1
Score 7 · Moderate
North Cartwright Road · Hidden Springs → Boise
Paved twisty Paved 99%
4.0 km · 2.0 twisty km · best km 7 · ~2 tight corners
km 0–4 of 9.8
Score 6 · Moderate
ID 55 · near Smiths Ferry
Paved twisty Paved 100%
4.0 km · 2.0 twisty km · best km 7
km 99–103 of 178.1
Score 6 · Moderate
Ponderosa Pine Scenic Route (ID 21) · Banner → Tenmile Summer Home Area
Flowing Paved 100%
17.0 km · 8.0 twisty km · best km 9
km 117–134 of 202.7
Score 7 · Moderate
Banks Lowman Road · Lowman → Grimes Pass
Flowing Paved 100%
17.0 km · 6.0 twisty km · best km 8
km 1.1–18 of 53.5
Score 6 · Moderate
North Cartwright Road · Hidden Springs → Boise
Flowing Paved 100%
7.0 km · 2.0 twisty km · best km 7 · ~2 tight corners
km 0–7 of 9.8
Score 6 · Moderate
ID 55 · Smiths Ferry → Big Eddy
Flowing Paved 100%
5.0 km · 2.0 twisty km · best km 7
km 99–104.1 of 178.1
Score 6 · Moderate
Ponderosa Pine Scenic Route (ID 21) · near Idaho City
Flowing Paved 100%
5.0 km · 1.0 twisty km · best km 7
km 138–143 of 202.7
Score 6 · Moderate
Ponderosa Pine Scenic Route (ID 21) · near Robie Creek
Flowing Paved 100%
9.0 km · 0.0 twisty km · best km 6
km 166.1–175 of 202.7
Score 5 · Moderate
Harris Creek Summit Road (FS 374) · near Banks
Unpaved & 4WD Gravel/Dirt 0%
49.0 km · 49.0 twisty km · best km 12 · ~198 tight corners
km 0–49 of 49
Score 10 · High
Deadwood Road – National Forest Development Road 555 (FS 555)
Unpaved & 4WD Gravel/Dirt 0%
45.0 km · 44.0 twisty km · best km 11 · ~44 tight corners
km 15–60 of 60
Score 9 · High
Trinity Ridge Road · Featherville → Pine
Unpaved & 4WD Gravel/Dirt 0%
50.2 km · 42.1 twisty km · best km 12 · ~86 tight corners · 2 hairpins
km 2–52.2 of 52.2
Score 9 · High
Warm Springs Point (FS 311) · Robie Creek → Idaho City