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Max elevation: 6347 ft / 1935 m
Min elevation: 1669 ft / 509 m
Elevation change: 4678 ft / 1426 m

Max grade: 3.1%
Min grade: -4.1%
Steepness score: 71 + 406 + 2435 + 17 = 2929

Distance: 534.18 mi / 859.68 km
Travel Time: 8 hours 20 mins

Make sure you double check everything if you're planning a road trip. Elevation data comes from different sources and may not reflect true driving conditions, so talk to other RVers if you're concerned about steep grades.

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If you're planning to drive in the winter and you want to avoid snow, check the road conditions from Boulder to Eagle Butte. You can also view a 3-D map of Boulder elevation or Eagle Butte elevation.

These are some of the possible highways along this route. Use the GPS in your car to verify all driving directions. If you're looking for campgrounds along the way, search for RV parks between Boulder and Eagle Butte.

Northwest Pkwy	17 mi / 27 km
	89 mi / 143 km
US 85	46 mi / 74 km
NE 88	29 mi / 47 km
NE 71	17 mi / 27 km
US 26	16 mi / 26 km
US 385	33 mi / 53 km
NE 87	46 mi / 74 km
US 20	57 mi / 92 km
SD 73	19 mi / 31 km
US 18	12 mi / 19 km
SD 73	46 mi / 74 km
	20 mi / 32 km
SD 63	14 mi / 23 km
US 14	22 mi / 35 km
SD 63	47 mi / 76 km