How far is Nampa, ID from Challis, ID?
The driving distance from Nampa, ID to Challis, ID is about 204.9 miles (329.7 km), with a travel time of about 05h 02m by car.
- The straight-line flight distance is about 133.6 miles (215 km).
- For a round trip, plan for roughly 10h 05m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 6:00 AM to 8:00 AM MDT.
Reverse, save, or send this route
This drive is better planned with a longer stop or an overnight stay. Copy the route link, send it to another device, or print a clean version before you head out.
This drive is better planned with a longer stop or an overnight stay.
Flight Distance
Driving Distance
Gas Cost Calculator
Leave and Arrive Planner
Pick a departure time to see your estimated arrival and same-day return window.
Drive time stays fixed at 05h 02m.
An early departure helps you fit a real stop into the day without turning the return into a late-night drive.
You are leaving earlier than the recommended window, which gives you extra margin for breaks and traffic.
Halfway Point
A useful midpoint for breaks, coffee, or meeting in the middle.
City in Custer County, Idaho, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Sunny
Mostly Sunny
Driving Route Map
The map below follows the saved road route between Nampa and Challis.
Turn-by-Turn Driving Directions
Step-by-step road directions between Nampa and Challis.
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1
Start on Stony Meadow Drive
56 m · 14 sec · Stony Meadow Drive
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2
Turn left onto Sunny Ridge Road
1 mi · 2 min · Sunny Ridge Road
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3
Continue on Holly Street
1556 ft · 45 sec · Holly Street
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4
Continue on East Bird Avenue
911 ft · 25 sec · East Bird Avenue
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5
Continue on Fern Street
1355 ft · 37 sec · Fern Street
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6
Continue on East Sheridan Avenue
602 ft · 17 sec · East Sheridan Avenue
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7
Continue on Holly Street
1617 ft · 46 sec · Holly Street
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8
Continue on 16th Avenue South
1.1 km · 2 min · 16th Avenue South
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9
Continue on 16th Avenue Overpass
764 ft · 15 sec · 16th Avenue Overpass
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10
Continue on 16th Avenue North
1.2 km · 2 min · 16th Avenue North
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11
Turn right onto Garrity Boulevard
1.8 mi · 3 min · Garrity Boulevard
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12
Take the ramp slight right toward I 84 East: Meridian, Boise
1965 ft · 26 sec
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13
Merge slight left onto Vietnam Veterans Memorial Highway
7.2 mi · 8 min · Vietnam Veterans Memorial Highway
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14
Take the exit slight right toward ID 55: Eagle, McCall
3150 ft · 52 sec
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15
Continue on South Eagle Road
6.8 mi · 10 min · South Eagle Road
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16
Turn right
1.8 mi · 3 min
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17
Turn left onto North Horseshoe Bend Road
8.9 mi · 12 min · North Horseshoe Bend Road
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18
Continue on Payette River Scenic Byway
5.9 mi · 7 min · Payette River Scenic Byway
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19
Continue on Highway 55
2.4 mi · 3 min · Highway 55
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20
Continue on Horseshoe Bend Road
2105 ft · 30 sec · Horseshoe Bend Road
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21
Continue on Highway 55
16 mi · 24 min · Highway 55
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22
Continue on Horseshoe Bend Road
109 m · 8 sec · Horseshoe Bend Road
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23
Turn right onto Banks Lowman Road
33.3 mi · 59 min · Banks Lowman Road
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24
Turn left onto Ponderosa Pine Scenic Route
32.8 mi · 45 min · Ponderosa Pine Scenic Route
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25
Continue on State Highway 21
24.4 mi · 28 min · State Highway 21
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26
Continue on Eva Falls Avenue
1 mi · 2 min · Eva Falls Avenue
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27
At the end of the road, turn left onto Salmon River Scenic Byway
54.9 mi · 1 hr 22 min · Salmon River Scenic Byway
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28
At the end of the road, turn left onto South Salmon River Scenic Byway
2.1 mi · 3 min · South Salmon River Scenic Byway
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29
Turn left onto East Valley Avenue
2264 ft · 2 min · East Valley Avenue
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30
Turn right onto South 7th Street
101 m · 16 sec · South 7th Street
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31
Turn right
41 m · 10 sec
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32
Arrive at your destination
0 m · 1 sec
Car Route Details
A richer read on the saved driving route between Nampa and Challis.
Straightforward drive
The saved road route has a manageable number of maneuvers and should be easy to follow with normal attention to signs.
Salmon River Scenic Byway
At the end of the road, turn left onto Salmon River Scenic Byway
54.9 mi · 01h 22m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A longer out-and-back drive
This is still possible in one day, but it becomes a long driving day. Leaving early and planning your stop window matters more here.
Mostly Sunny leaving Nampa and Mostly Sunny near Challis.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Nampa to Challis?
The road trip is about 204.9 miles (329.7 km) and usually takes 05h 02m in normal driving conditions.
Is this a same-day trip or an overnight route?
This is still possible in one day, but it becomes a long driving day. Leaving early and planning your stop window matters more here.
What is the halfway point on this route?
Stanley is a useful midpoint, sitting about 102.3 miles from Nampa and 102.5 miles from Challis.
How much longer is the road route than the straight-line distance?
The direct path is about 133.6 miles (215 km), while the road route adds roughly 71.3 extra miles because roads do not follow the straight air line.
When is the best time to leave for this route?
A good departure window is usually 6:00 AM to 8:00 AM MDT. If you want a more comfortable same-day return, try to leave by 6:54 AM MDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $28.15 one way or $56.29 round trip. Estimated CO2 is about 64.3 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Sunny around Nampa and Mostly Sunny near Challis.
Flight Path Map
This map shows the direct air route between Nampa and Challis. Straight-line distance: 133.62 mi (215.04 km).
#1 Nampa
The most populous city in Canyon County, Idaho.
| Population | 99,277 |
| Coordinates | 43.5407200, -116.5634600 |
| Altitude | 767 |
| Country | United States |
#2 Challis
City in Custer County, Idaho, United States
| Population | 1,091 |
| Coordinates | 44.5046400, -114.2317300 |
| Altitude | 1601 |
| Country | United States |
End: Challis (-114.23173, 44.50464)
Estimated Travel Time
Distance: 330 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 06h 49m |
| 40 mph (64.37 km/h) | 05h 07m |
| 50 mph (80.47 km/h) | 04h 05m |
| 60 mph (96.56 km/h) | 03h 24m |
| 70 mph (112.65 km/h) | 02h 55m |
| 80 mph (129 km/h) | 02h 33m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.89 | $28.15 | $56.29 |
| Mid-grade | $4.23 | $30.59 | $61.18 |
| Premium | $4.55 | $32.89 | $65.78 |
| Diesel | $5.41 | $39.13 | $78.26 |
Assumes 8.3 L/100 km (about 28.3 MPG). CO2 is an estimate and varies by vehicle, fuel blend, traffic, and terrain.
Prices in Idaho · Apr 19, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.