How far is Idaho Falls, ID from Saint Anthony, ID?
The driving distance from Idaho Falls, ID to Saint Anthony, ID is about 40.7 miles (65.5 km), with a travel time of about 00h 49m by car.
- The straight-line flight distance is about 38.8 miles (62.4 km).
- For a round trip, plan for roughly 01h 38m 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 49m.
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 Jefferson County, Idaho, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Sunny then Slight Chance Showers And Thunderstorms
Mostly Sunny then Chance Showers And Thunderstorms
Driving Route Map
The map below follows the saved road route between Idaho Falls and Saint Anthony.
Turn-by-Turn Driving Directions
Step-by-step road directions between Idaho Falls and Saint Anthony.
-
1
Start on Charleston Lane
46 m · 9 sec · Charleston Lane
-
2
Turn right onto West Stone Run Lane
74 m · 16 sec · West Stone Run Lane
-
3
Turn left onto Stonebrook Lane
142 m · 17 sec · Stonebrook Lane
-
4
Turn right onto East Sunnyside Road
2578 ft · 51 sec · East Sunnyside Road
-
5
Turn left onto South Holmes Avenue
1.1 mi · 2 min · South Holmes Avenue
-
6
Turn straight onto South Holmes Avenue
2.9 mi · 6 min · South Holmes Avenue
-
7
Take the ramp slight right toward Rigby, West Yellowstone
1961 ft · 48 sec
-
8
Merge slight left onto Rigby Highway
3056 ft · 37 sec · Rigby Highway
-
9
Continue on Idaho Medal of Honor Highway
15.4 mi · 16 min · Idaho Medal of Honor Highway
-
10
Continue on Yellowstone Highway
17.2 mi · 18 min · Yellowstone Highway
-
11
Continue on Idaho Medal of Honor Highway
1.9 mi · 2 min · Idaho Medal of Honor Highway
-
12
Take the exit slight right
2004 ft · 54 sec
-
13
Turn left onto South Bridge Street
1529 ft · 37 sec · South Bridge Street
-
14
Turn right onto East Main Street
27 m · 4 sec · East Main Street
-
15
Arrive at your destination
0 m · 1 sec · East Main Street
Car Route Details
A richer read on the saved driving route between Idaho Falls and Saint Anthony.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
Yellowstone Highway
Continue on Yellowstone Highway
17.2 mi · 00h 18m
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.
Mostly Sunny then Slight Chance Showers And Thunderstorms leaving Idaho Falls and Mostly Sunny then Chance Showers And Thunderstorms near Saint Anthony.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Idaho Falls to Saint Anthony?
The road trip is about 40.7 miles (65.5 km) and usually takes 00h 49m 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?
Rigby is a useful midpoint, sitting about 20.4 miles from Idaho Falls and 20.4 miles from Saint Anthony.
How much longer is the road route than the straight-line distance?
The direct path is about 38.8 miles (62.4 km), while the road route adds roughly 1.9 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 4:52 PM MDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $5.61 one way or $11.21 round trip. Estimated CO2 is about 12.8 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Sunny then Slight Chance Showers And Thunderstorms around Idaho Falls and Mostly Sunny then Chance Showers And Thunderstorms near Saint Anthony.
Flight Path Map
This map shows the direct air route between Idaho Falls and Saint Anthony. Straight-line distance: 38.74 mi (62.35 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 Saint Anthony
City in and county seat of Fremont County, Idaho, United States
| Population | 3,553 |
| Coordinates | 43.9663000, -111.6821800 |
| Altitude | 1514 |
| Country | United States |
End: Saint Anthony (-111.68218, 43.9663)
Estimated Travel Time
Distance: 66 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 01h 21m |
| 40 mph (64.37 km/h) | 01h 01m |
| 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 | $5.61 | $11.21 |
| Mid-grade | $4.23 | $6.09 | $12.19 |
| Premium | $4.55 | $6.55 | $13.10 |
| Diesel | $5.41 | $7.79 | $15.59 |
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 · May 26, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.