How far is Challis, ID from Idaho Falls, ID?
The driving distance from Challis, ID to Idaho Falls, ID is about 150.3 miles (241.9 km), with a travel time of about 02h 33m by car.
- The straight-line flight distance is about 130.7 miles (210.3 km).
- For a round trip, plan for roughly 05h 06m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 8:00 AM to 10:00 AM MDT.
Reverse, save, or send this route
This route works well as a day trip with time at the destination. Copy the route link, send it to another device, or print a clean version before you head out.
This route works well as a day trip with time at the destination.
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 02h 33m.
A morning start gives you useful time at the destination and keeps the return out of the late evening.
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.
Snow Showers
Light Rain Likely then Showers And Thunderstorms
Driving Route Map
The map below follows the saved road route between Challis and Idaho Falls.
Turn-by-Turn Driving Directions
Step-by-step road directions between Challis and Idaho Falls.
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1
Start on the route
41 m · 12 sec
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2
Turn right onto South 7th Street
99 m · 17 sec · South 7th Street
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3
Turn right onto Main Street
2325 ft · 1 min · Main Street
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4
Turn right onto South Salmon River Scenic Byway
80.5 mi · 1 hr 37 min · South Salmon River Scenic Byway
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5
Continue on Idaho Medal of Honor Highway
22.7 mi · 26 min · Idaho Medal of Honor Highway
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6
Keep slight left to continue on Idaho Medal of Honor Highway
19.3 mi · 21 min · Idaho Medal of Honor Highway
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7
Continue on West Arco Highway
19.6 mi · 21 min · West Arco Highway
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8
Continue on West Broadway Street
1.6 km · 1 min · West Broadway Street
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9
Turn right onto South 45th West
2 mi · 4 min · South 45th West
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10
Turn left onto West 33rd South
1.8 mi · 3 min · West 33rd South
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11
Continue on West Sunnyside Road
2.7 mi · 4 min · West Sunnyside Road
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12
Turn right onto Stonebrook Lane
142 m · 15 sec · Stonebrook Lane
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13
Turn right onto West Stone Run Lane
74 m · 16 sec · West Stone Run Lane
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14
Turn left onto Charleston Lane
46 m · 7 sec · Charleston Lane
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15
Arrive at your destination
0 m · 1 sec · Charleston Lane
Car Route Details
A richer read on the saved driving route between Challis and Idaho 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
80.5 mi · 01h 37m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A comfortable day-trip route
This route works well as a day trip. You can leave in the morning, spend meaningful time at the destination, and still return the same day.
Snow Showers leaving Challis and Light Rain Likely then Showers And Thunderstorms near Idaho Falls.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Challis to Idaho Falls?
The road trip is about 150.3 miles (241.9 km) and usually takes 02h 33m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route works well as a day trip. You can leave in the morning, spend meaningful time at the destination, and still return the same day.
What is the halfway point on this route?
Moore is a useful midpoint, sitting about 75.1 miles from Challis and 75.2 miles from Idaho Falls.
How much longer is the road route than the straight-line distance?
The direct path is about 130.7 miles (210.3 km), while the road route adds roughly 19.6 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 8:00 AM to 10:00 AM MDT. If you want a more comfortable same-day return, try to leave by 1:24 PM MDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $20.63 one way or $41.27 round trip. Estimated CO2 is about 47.1 kg one way.
What should you check before leaving?
Before you leave, expect Snow Showers around Challis and Light Rain Likely then Showers And Thunderstorms near Idaho Falls.
Flight Path Map
This map shows the direct air route between Challis and Idaho Falls. Straight-line distance: 130.68 mi (210.31 km).
#1 Challis
City in Custer County, Idaho, United States
| Population | 1,091 |
| Coordinates | 44.5046400, -114.2317300 |
| Altitude | 1601 |
| Country | United States |
#2 Idaho Falls
The most populous city in Bonneville County, Idaho.
| Population | 62,888 |
| Coordinates | 43.4665800, -112.0341400 |
| Altitude | 1434 |
| Country | United States |
End: Charleston Lane (-112.034479, 43.46658)
Estimated Travel Time
Distance: 242 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 05h 00m |
| 40 mph (64.37 km/h) | 03h 45m |
| 50 mph (80.47 km/h) | 03h 00m |
| 60 mph (96.56 km/h) | 02h 30m |
| 70 mph (112.65 km/h) | 02h 08m |
| 80 mph (129 km/h) | 01h 52m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.89 | $20.63 | $41.27 |
| Mid-grade | $4.23 | $22.42 | $44.85 |
| Premium | $4.55 | $24.11 | $48.22 |
| Diesel | $5.41 | $28.68 | $57.37 |
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 23, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.