How far is Rexburg, ID from Fremont County, ID?
The driving distance from Rexburg, ID to Fremont County, ID is about 40.6 miles (65.4 km), with a travel time of about 00h 58m by car.
- The straight-line flight distance is about 31.8 miles (51.1 km).
- For a round trip, plan for roughly 01h 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 00h 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 Fremont County, Idaho, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Light Rain Likely then Showers And Thunderstorms
Chance Light Rain
Driving Route Map
The map below follows the saved road route between Rexburg and Fremont County.
Turn-by-Turn Driving Directions
Step-by-step road directions between Rexburg and Fremont County.
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1
Start on West Main Street
1 mi · 2 min · West Main Street
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2
Take the ramp straight toward US 20
2248 ft · 55 sec
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3
Merge slight left onto Yellowstone Highway
9.5 mi · 10 min · Yellowstone Highway
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4
Continue on Idaho Medal of Honor Highway
25.5 mi · 29 min · Idaho Medal of Honor Highway
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5
Turn left onto South Antelope Flat Road
4.3 mi · 17 min · South Antelope Flat Road
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6
Arrive at your destination
0 m · 1 sec · South Antelope Flat Road
Car Route Details
A richer read on the saved driving route between Rexburg and Fremont County.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
Idaho Medal of Honor Highway
Continue on Idaho Medal of Honor Highway
25.5 mi · 00h 29m
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.
Light Rain Likely then Showers And Thunderstorms leaving Rexburg and Chance Light Rain near Fremont County.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Rexburg to Fremont County?
The road trip is about 40.6 miles (65.4 km) and usually takes 00h 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?
Ashton is a useful midpoint, sitting about 20.3 miles from Rexburg and 20.3 miles from Fremont County.
How much longer is the road route than the straight-line distance?
The direct path is about 31.8 miles (51.1 km), while the road route adds roughly 8.8 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 4:32 PM MDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $5.57 one way or $11.13 round trip. Estimated CO2 is about 12.7 kg one way.
What should you check before leaving?
Before you leave, expect Light Rain Likely then Showers And Thunderstorms around Rexburg and Chance Light Rain near Fremont County.
Flight Path Map
This map shows the direct air route between Rexburg and Fremont County. Straight-line distance: 31.75 mi (51.1 km).
#1 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 |
#2 Fremont County
County in Idaho, United States
| Population | 13,099 |
| Coordinates | 44.2287900, -111.4820200 |
| Altitude | 1892 |
| Country | United States |
End: Fremont County (-111.48202, 44.22879)
Estimated Travel Time
Distance: 65 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 01h 21m |
| 40 mph (64.37 km/h) | 01h 00m |
| 50 mph (80.47 km/h) | 00h 48m |
| 60 mph (96.56 km/h) | 00h 40m |
| 70 mph (112.65 km/h) | 00h 34m |
| 80 mph (129 km/h) | 00h 30m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.89 | $5.57 | $11.13 |
| Mid-grade | $4.23 | $6.05 | $12.10 |
| Premium | $4.55 | $6.51 | $13.01 |
| Diesel | $5.41 | $7.74 | $15.48 |
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.