Motorcycle Ride Planner · Routes · United States
Iron Mountain Road (Black Hills)
United States · US-16A
Specifically engineered by Governor Peter Norbeck to force travelers to slow down and savor the scenery. Features 314 curves in 17 miles, 14 switchbacks, 3 wooden corkscrew 'pigtail' bridges where the road loops over itself, and 3 narrow granite tunnels perfectly aligned to frame Mount Rushmore in the windshield.
Iron Mountain Road (Black Hills) runs 17 miles between Keystone, SD and Custer State Park Entrance, SD. We count about 314 corners along it, which is relentless. Demanding, and not a road to meet in the wet.
Tank-bag quick reference
- StartKeystone, SD43.8955, -103.4242
- High4,300 ft - 5,445 ftelevation range
- EndCuster State Park Entrance, SD43.7667, -103.4667
T-CLOCS before you go: tyres and wheels, controls and cables, lights and electrics, oil and fluids, chassis and stand.
Repair within reach
- 16 miBlack Hills Harley-DavidsonRapid City, United States
- 36 miSturgis MotorsportsSturgis, United States
Straight-line distance from the start of the route, not driving distance.
More in United States
- California Route 36 - '140 Miles of Curves'140 mi · 1800 corners
- Blue Ridge Parkway (Virginia Ridge & Peaks of Otter)176 mi · 620 corners
- Blue Ridge Parkway (Southern High Peaks Section)129 mi · 580 corners
- The Snake 421 (Holston Mountain Pass)33 mi · 489 corners
- Coronado Trail (The Devil's Highway)92 mi · 460 corners
- Lolo Pass (Lewis and Clark Highway)132 mi · 450 corners
Questions riders ask
- How long does Iron Mountain Road (Black Hills) take to ride?
- About 17 miles. At an unhurried pace with stops that is roughly 1 hour of riding, longer if you are stopping for photographs.
- Where does Iron Mountain Road (Black Hills) start and end?
- It runs between Keystone, SD and Custer State Park Entrance, SD. Either end works as a start; the route reads the same in both directions.
- Is Iron Mountain Road (Black Hills) a twisty road?
- We count about 314 corners across 17 miles, which is relentless.
- Is there a GPX file for Iron Mountain Road (Black Hills)?
- Yes. The GPX is free, there is no account, and the planner will build a route that includes this road alongside others nearby.
Where these numbers come from
Distances and corner counts come from the route's own geometry, not from ratings or votes. Nothing here is crowdsourced and nobody paid to appear.