Origin
Rapid City, SD
Afternoon in Rapid City on Friday
Local time
3:19 PM
MDT
Current temp
78°F
Unavailable
Live forecast
Trip from Rapid City, SD to Custer, SD
Compiled and reviewed by the Trip.ovh planning team at COD Solutions Oy · Last reviewed Apr 17, 2026 · Editorial standards
Drive Time
57m
Distance
41 mi
66 km
Drive Score
7/10
Good drive
Same Day?
Yes, doable
Fuel Cost
$6
one way
EV Charging
Good
8 stations
Best Time to Leave
4 AM
0h 53m
★
6 AM
0h 58m
8 AM
1h 7m
10 AM
1h 1m
12 PM
1h 0m
3 PM
1h 1m
5 PM
1h 6m
8 PM
0h 55m
Estimated drive times based on typical traffic patterns. Actual times may vary with weather, construction, and real-time conditions.
Rapid City, SD
Wikimedia Commons
Custer, SD
Patrick
Trip Overview
This quick 41-mile drive from Rapid City to Custer, South Dakota, will only take about 57 minutes, making it a perfect addition to any day trip. You'll primarily be on South Highway 16 and Highway 385, which merge into US Highway 16/385 for a good portion of the journey. With an estimated fuel cost of just $6, this route is very budget-friendly. Since it's a short drive located entirely within the Great Plains region, it's easily manageable without an overnight stay, offering flexibility for your travel plans.
Who Is This Route For?
Weekend Trip
Doable as a same-day drive at 57m. Total distance: 41 miles.
Family Friendly
Moderate complexity with 0 natural rest stops along the way.
Solo Traveler
57m drive, comfortable solo distance.
EV Driver
0 DC fast chargers along the route. Coverage: unknown.
First-Time Driver
Mostly highway driving (80%). Straightforward navigation.
Drive Character
Expect a highway-focused experience on this route, with 80% of the drive utilizing well-maintained highways. The longest uninterrupted stretch you'll encounter is 17.5 miles on South Highway 16. While largely a highway drive, it offers a straightforward path connecting two points in the Great Plains. The road character remains consistent, providing a predictable and efficient journey.
Most of the miles stay on highways, which makes pacing and fuel planning easier than turn-by-turn city driving.
There are about 9 navigation steps in the underlying route data, so the final approach matters more than the middle miles.
South Highway 16 is the longest continuous segment at about 17.5 miles.
How Hard Is This Drive?
This is a straightforward highway drive that stays mostly on South Highway 16 and Highway 385. Navigation is very simple - set it and forget it for most of the drive. The trickiest moment comes around 40.9 miles in near US 16A; SD 89 / Mount Rushmore Road.
Driving Effort
1/10
Very easy - short and simple to drive
Balances navigation complexity with total wheel time.
The drive from Rapid City, SD to Custer, SD is easy. At 57m with 80% highway, most drivers will find it relaxed and low-stress.
Where does it get tricky?
There is one spot that needs extra attention: at 40.9 miles (US 16A; SD 89 / Mount Rushmore Road): Navigation decision point.
Critical Maneuvers
1 of 1 key pointsThese are the spots where you need to pay the most attention. Preview them before you drive.
4
40.9 mi into trip
|
~57m in
|
US 16A; SD 89 / Mount Rushmore Road
Turn left onto US 16A; SD 89 / Mount Rushmore Road
Navigation decision point
Main Roads
| Road | Distance | Duration |
|---|---|---|
| South Highway 16 | 17.5 mi | 21m |
| Highway 385 | 9.2 mi | 13m |
| US Highway 16/385 | 6 mi | 7m |
| Mount Rushmore Road | 5.8 mi | 9m |
| East Main Street | 1.4 mi | 2m |
| North 5th Street | 1.1 mi | 2m |
Longest stretch:
South Highway 16
— 17.5 mi, about 21m
Turn-by-Turn Driving Directions
Step-by-step road directions between Rapid City, SD and Custer, SD.
1
Start on US 16
5.7 mi
·
9 min
·
Mount Rushmore Road
2
Continue on US 16
18 mi
·
21 min
·
South Highway 16
3
Continue on US 16
3.0 mi
·
4 min
·
Highway 385
4
Continue on US 16; US 385
1.4 mi
·
2 min
·
East Main Street
5
Continue on US 16; US 385
6.1 mi
·
8 min
·
Highway 385
6
Continue on US 16; US 385
6.0 mi
·
7 min
·
US Highway 16/385
7
Continue on US 16; US 385
1.1 mi
·
2 min
·
North 5th Street
8
Turn left onto US 16A; SD 89
421 ft
·
10 sec
·
Mount Rushmore Road
9
Arrive at destination
US 16A; SD 89
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
Halfway Point
Midpoint
About 20.5 mi from Rapid City, SD · 27m into the drive
Mid-route town
Meal stop
21 mi into the route
Best for: Lunch, fuel, and a longer reset
This sits close to the middle of the route, so it works well for the longest stop of the day.
Pacing Suggestions
Fuel and coffee
A short stop after about 41 miles helps settle the day before fatigue starts building.
Meal break
The midpoint is around 20.5 miles from Rapid City, SD, which is a good place for a longer meal and fuel stop.
Arriving in Custer, SD
Allow a few extra minutes for the final approach into Custer, SD if you are unfamiliar with the area.
These stop ideas are pacing suggestions — the exact town or exit can change with traffic, hotel plans, and fuel range.
Fuel & Cost
Regular Gas
$6.41 one way
$12.82 round trip
$3.97/gal
25.4 MPG avg
14 kg CO2
| Fuel Type | $/gal | One Way | Round Trip |
|---|---|---|---|
| midgrade | $4.36 | $7.04 | $14.08 |
| premium | $4.89 | $7.89 | $15.78 |
| diesel | $5.61 | $9.05 | $18.10 |
No toll roads detected on this route.
Drive Cost (one way)
Fuel
$6
Estimated CO2 emission: 14.3 kg one way. Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $4 in charging · 0 stops · 64% less CO2
| Vehicle Type | kWh | Stops | DC Fast | Home Charge |
|---|---|---|---|---|
| Average EV | 12.3 | 0 | $4.31 | $1.97 |
| Efficient EV | 10.3 | 0 | $3.59 | $1.64 |
| EV Truck/SUV | 16.4 | 0 | $5.74 | $2.62 |
Gas CO2
14 kg
EV CO2
5 kg (64% less)
This trip is well within single-charge range for most EVs. No charging stops needed if you start fully charged.
DC fast charging avg $0.35/kWh. Home charging avg $0.16/kWh. US grid CO2: 0.39 kg/kWh.
Travel Intel
Current conditions at both ends of the drive.
Destination
Custer, SD
Afternoon in Custer on Friday
Local time
3:19 PM
MDT
Current temp
69°F
Unavailable
Live forecast
43°F
Hill City, SD
21 mi in
Time zone
Same local time
Origin and destination are on the same clock, so arrival timing is easier to judge at a glance.
Temperature spread
9 degrees cooler at arrival
A meaningful temperature swing is a good cue to rethink layers, water, and how soon you want to arrive.
Road read
57m on the road
Use the two city cards together: check the sky where you start, then compare it with the local time and temperature at arrival.
Weather data from the National Weather Service. Conditions may change; check closer to your travel date.
Frequently Asked Questions
The drive from Rapid City, SD to Custer, SD covers 41 miles and takes about 57m without stops. Add 15-30 minutes for a fuel or rest stop on longer drives.
The main roads are South Highway 16, Highway 385, US Highway 16/385. Most of the drive stays on highways, so watch for ramps and exits.
This is a comfortable same-day trip.
The midpoint is about 20.5 miles from Rapid City, SD. Look for rest areas, gas stations, or food options near the halfway mark.
At current regular gas prices, expect to spend about $6.41 one way. This estimate uses 25.4 MPG — your actual cost will vary with your vehicle's fuel efficiency and current gas prices.
Leave by 9 AM and you'll arrive before lunch. Even a 4 PM departure gets you there before dark in summer.
The drive from Rapid City, SD to Custer, SD is easy. At 57m with 80% highway, most drivers will find it relaxed and low-stress.
There is one spot that needs extra attention: at 40.9 miles (US 16A; SD 89 / Mount Rushmore Road): Navigation decision point.
The route from Rapid City, SD to Custer, SD does not surface many named destination signs beyond the main corridor.
Yes. Nearby national parks include Mount Rushmore National Memorial, Jewel Cave National Monument and Wind Cave National Park.
How this page is built
Compiled by the Trip.ovh planning team at COD Solutions Oy from open government datasets — OSRM over OpenStreetMap for geometry, EIA for fuel prices, and NPS for national parks. See our methodology for refresh cadence and limitations.
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