How far is Challis, ID from Twin Falls, ID?
The driving distance from Challis, ID to Twin Falls, ID is about 189.1 miles (304.4 km), with a travel time of about 03h 24m by car.
- The straight-line flight distance is about 134.7 miles (216.7 km).
- For a round trip, plan for roughly 06h 48m 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 03h 24m.
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 Butte County, Idaho, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Sunny
Driving Route Map
The map below follows the saved road route between Challis and Twin Falls.
Turn-by-Turn Driving Directions
Step-by-step road directions between Challis and Twin Falls.
-
1
Start on the route
41 m · 12 sec
-
2
Turn right onto South 7th Street
99 m · 17 sec · South 7th Street
-
3
Turn right onto Main Street
2325 ft · 1 min · Main Street
-
4
Turn right onto South Salmon River Scenic Byway
79.9 mi · 1 hr 36 min · South Salmon River Scenic Byway
-
5
Turn right onto West Lost River Avenue
979 ft · 20 sec · West Lost River Avenue
-
6
Turn left onto North Water Street
122 m · 8 sec · North Water Street
-
7
Turn right onto West Grand Avenue
1.3 km · 2 min · West Grand Avenue
-
8
Continue on Idaho Medal of Honor Highway
41 mi · 47 min · Idaho Medal of Honor Highway
-
9
Continue on North Main Street
8 mi · 11 min · North Main Street
-
10
Continue straight
32.4 mi · 48 min
-
11
Turn left onto South Greenwood Street
23.6 mi · 28 min · South Greenwood Street
-
12
Continue on North 3000 East Road
2933 ft · 1 min · North 3000 East Road
-
13
Continue on Blue Lakes Boulevard North
2 mi · 5 min · Blue Lakes Boulevard North
-
14
Turn slight right onto Shoshone Street East
46 m · 3 sec · Shoshone Street East
-
15
Arrive at your destination
0 m · 1 sec · Shoshone Street East
Car Route Details
A richer read on the saved driving route between Challis and Twin Falls.
Straightforward drive
The saved road route has a manageable number of maneuvers and should be easy to follow with normal attention to signs.
South Salmon River Scenic Byway
Turn right onto South Salmon River Scenic Byway
79.9 mi · 01h 36m
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.
Sunny leaving Challis and Sunny near Twin Falls.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Challis to Twin Falls?
The road trip is about 189.1 miles (304.4 km) and usually takes 03h 24m 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?
Arco is a useful midpoint, sitting about 94.4 miles from Challis and 94.6 miles from Twin Falls.
How much longer is the road route than the straight-line distance?
The direct path is about 134.7 miles (216.7 km), while the road route adds roughly 54.4 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 10:12 AM MDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $25.97 one way or $51.93 round trip. Estimated CO2 is about 59.3 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Challis and Sunny near Twin Falls.
Flight Path Map
This map shows the direct air route between Challis and Twin Falls. Straight-line distance: 134.64 mi (216.69 km).
#1 Challis
City in Custer County, Idaho, United States
| Population | 1,091 |
| Coordinates | 44.5046400, -114.2317300 |
| Altitude | 1601 |
| Country | United States |
#2 Twin Falls
The most populous city in Twin Falls County, Idaho.
| Population | 50,197 |
| Coordinates | 42.5629700, -114.4608700 |
| Altitude | 1138 |
| Country | United States |
End: Shoshone Street East (-114.460704, 42.56285)
Estimated Travel Time
Distance: 304 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 06h 18m |
| 40 mph (64.37 km/h) | 04h 43m |
| 50 mph (80.47 km/h) | 03h 46m |
| 60 mph (96.56 km/h) | 03h 09m |
| 70 mph (112.65 km/h) | 02h 42m |
| 80 mph (129 km/h) | 02h 21m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.89 | $25.97 | $51.93 |
| Mid-grade | $4.23 | $28.22 | $56.44 |
| Premium | $4.55 | $30.34 | $60.68 |
| Diesel | $5.41 | $36.10 | $72.20 |
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 30, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.