How far is Idaho Falls, ID from Challis, ID?
The driving distance from Idaho Falls, ID to Challis, ID is about 150.2 miles (241.7 km), with a travel time of about 02h 58m by car.
- The straight-line flight distance is about 130.7 miles (210.3 km).
- For a round trip, plan for roughly 05h 57m 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 58m.
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.
Slight Chance Snow Showers
Mostly Sunny then Chance Snow Showers
Driving Route Map
The map below follows the saved road route between Idaho Falls and Challis.
Turn-by-Turn Driving Directions
Step-by-step road directions between Idaho Falls and Challis.
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1
Start on Charleston Lane
46 m · 9 sec · Charleston Lane
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2
Turn right onto West Stone Run Lane
74 m · 16 sec · West Stone Run Lane
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3
Turn left onto Stonebrook Lane
142 m · 20 sec · Stonebrook Lane
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4
Turn left onto West Sunnyside Road
2.7 mi · 4 min · West Sunnyside Road
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5
Continue on West 33rd South
1.8 mi · 3 min · West 33rd South
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6
Turn right onto South 45th West
2 mi · 4 min · South 45th West
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7
Turn left onto West Broadway Street
1.6 km · 1 min · West Broadway Street
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8
Continue on West Arco Highway
19.6 mi · 21 min · West Arco Highway
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9
Continue on Idaho Medal of Honor Highway
42 mi · 47 min · Idaho Medal of Honor Highway
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10
Continue on South Front Street
1.7 mi · 3 min · South Front Street
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11
Continue straight
78.7 mi · 1 hr 34 min
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12
Turn left onto East Valley Avenue
2264 ft · 2 min · East Valley Avenue
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13
Turn right onto South 7th Street
101 m · 16 sec · South 7th Street
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14
Turn right
41 m · 10 sec
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15
Arrive at your destination
0 m · 1 sec
Car Route Details
A richer read on the saved driving route between Idaho Falls 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.
South Front Street
Continue straight
78.7 mi · 01h 34m
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.
Slight Chance Snow Showers leaving Idaho Falls and Mostly Sunny then Chance Snow Showers near Challis.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Idaho Falls to Challis?
The road trip is about 150.2 miles (241.7 km) and usually takes 02h 58m 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 miles from Idaho Falls and 75.2 miles from Challis.
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 19.5 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 12:32 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 Slight Chance Snow Showers around Idaho Falls and Mostly Sunny then Chance Snow Showers near Challis.
Flight Path Map
This map shows the direct air route between Idaho Falls and Challis. Straight-line distance: 130.68 mi (210.31 km).
#1 Idaho Falls
The most populous city in Bonneville County, Idaho.
| Population | 62,888 |
| Coordinates | 43.4665800, -112.0341400 |
| Altitude | 1434 |
| 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: 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 18, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.