How far is American Falls, ID from Rexburg, ID?
The driving distance from American Falls, ID to Rexburg, ID is about 97.8 miles (157.4 km), with a travel time of about 01h 40m by car.
- The straight-line flight distance is about 89.6 miles (144.2 km).
- For a round trip, plan for roughly 03h 21m 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 01h 40m.
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 Bingham 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 American Falls and Rexburg.
Turn-by-Turn Driving Directions
Step-by-step road directions between American Falls and Rexburg.
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1
Start on the route
53 m · 15 sec
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2
Turn right onto Fort Hall Avenue
53 m · 13 sec · Fort Hall Avenue
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3
Turn left onto Harrison Street
1352 ft · 27 sec · Harrison Street
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4
Continue on Pocatello Avenue
1.3 km · 1 min · Pocatello Avenue
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5
At the end of the road, turn right onto Pocatello Avenue
2778 ft · 51 sec · Pocatello Avenue
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6
Take the ramp left
1408 ft · 34 sec
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7
Merge slight left
21.8 mi · 21 min
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8
Keep slight left to continue on Idaho Falls
3046 ft · 40 sec
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9
Merge slight right
46.3 mi · 44 min
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10
Take the exit slight right toward US 20 East, I 15: Rigby, West Yellowstone
1434 ft · 35 sec
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11
Continue on Rigby Highway
3.1 mi · 4 min · Rigby Highway
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12
Continue on Idaho Medal of Honor Highway
15.4 mi · 16 min · Idaho Medal of Honor Highway
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13
Continue on Yellowstone Highway
7 mi · 8 min · Yellowstone Highway
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14
Take the exit slight right toward ID 33: Salmon, Rexburg
1430 ft · 35 sec
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15
Keep slight right to continue on ID 33: Salmon, Rexburg
92 m · 10 sec
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16
Turn straight onto West Main Street
1 mi · 2 min · West Main Street
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17
Arrive at your destination
0 m · 1 sec · West Main Street
Car Route Details
A richer read on the saved driving route between American Falls and Rexburg.
Interchange-aware route
The drive includes several ramps, exits, or merges, so checking the next few maneuvers before busy interchanges is useful.
Idaho Falls
Merge slight right
46.3 mi · 00h 44m
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.
Sunny leaving American Falls and Sunny near Rexburg.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from American Falls to Rexburg?
The road trip is about 97.8 miles (157.4 km) and usually takes 01h 40m 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?
Blackfoot is a useful midpoint, sitting about 48.8 miles from American Falls and 48.9 miles from Rexburg.
How much longer is the road route than the straight-line distance?
The direct path is about 89.6 miles (144.2 km), while the road route adds roughly 8.2 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 3:08 PM MDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $16.79 one way or $33.59 round trip. Estimated CO2 is about 30.7 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around American Falls and Sunny near Rexburg.
Flight Path Map
This map shows the direct air route between American Falls and Rexburg. Straight-line distance: 89.61 mi (144.21 km).
#1 American Falls
City in Idaho
| Population | 4,315 |
| Coordinates | 42.7860200, -112.8544400 |
| Altitude | 1343 |
| Country | United States |
#2 Rexburg
City in and county seat of Madison County, Idaho, United States
| Population | 29,400 |
| Coordinates | 43.8260200, -111.7896900 |
| Altitude | 1483 |
| Country | United States |
End: Rexburg (-111.78969, 43.82602)
Estimated Travel Time
Distance: 157 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 03h 15m |
| 40 mph (64.37 km/h) | 02h 26m |
| 50 mph (80.47 km/h) | 01h 57m |
| 60 mph (96.56 km/h) | 01h 37m |
| 70 mph (112.65 km/h) | 01h 23m |
| 80 mph (129 km/h) | 01h 13m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.87 | $16.79 | $33.59 |
| Mid-grade | $5.19 | $17.90 | $35.80 |
| Premium | $5.46 | $18.82 | $37.64 |
| Diesel | $6.35 | $21.91 | $43.83 |
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 · Oct 15, 2026