The drive from Fremont County, ID to Idaho Falls, ID covers 68 miles and takes about 1h 31m behind the wheel.
This route is realistic as a one-day drive if you keep your stops efficient.
The route leans on Idaho Medal of Honor Highway, Yellowstone Highway, South Antelope Flat Road for much of the mileage,
and the overall profile is turn-heavy local drive.
The longest uninterrupted segment is about 40.8 miles on Idaho Medal of Honor Highway.
At current regular gas prices, budget about $10.78 one way before food or hotel costs.
Trip Pace
Same-day drive is realistic
A same-day return is realistic if you keep stops short.
Midpoint
34 miles from Fremont County, ID
A natural place for your longest stop of the day
, about 49m into the drive
.
Who Is This Route For?
Weekend Trip
Doable as a same-day drive at 1h 31m. Total distance: 68 miles.
Family Friendly
Moderate complexity with 0 natural rest stops along the way.
Turn-heavy local drive route profile with national parks nearby.
Drive Character
Expect a 1h 31m drive with frequent turns across 68 miles of local and secondary roads.
This route has more turning and local-road decision points than a simple highway run.
There are about 13 navigation steps in the underlying route data, so the final approach matters more than the middle miles.
Idaho Medal of Honor Highway is the longest continuous segment at about 40.8 miles.
How Hard Is This Drive?
Expect a hands-on drive with frequent turns and local roads rather than long highway stretches. Navigation is very simple - set it and forget it for most of the drive. The trickiest moment comes around 4.3 miles in near US 20 / Idaho Medal of Honor Highway.
Driving Effort2/10
Very easy - short and simple to drive
Balances navigation complexity with total wheel time.
The drive from Fremont County, ID to Idaho Falls, ID is easy. At 1h 31m with 0% highway, most drivers will find it relaxed and low-stress.
Where does it get tricky?
The main spots that need attention: at 4.3 miles (US 20 / Idaho Medal of Honor Highway): Navigation decision point; at 62.9 miles (US 20 BUS): Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one; at 63.2 miles (US 20 BUS / North 5th East): Navigation decision point.
Critical Maneuvers
5 of 7 key points
These are the spots where you need to pay the most attention. Preview them before you drive.
4
4.3 mi into trip|~16m in|US 20 / Idaho Medal of Honor Highway
At end of road, turn right onto US 20 / Idaho Medal of Honor Highway
Navigation decision point
6
62.9 mi into trip|~1h 20m in|US 20 BUS
Take the exit onto US 20 BUS toward US 20 Business: Lewisville, Idaho Falls
Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one
Exit 310
Toward US 20 Business: Lewisville, Idaho Falls
4
63.2 mi into trip|~1h 21m in|US 20 BUS / North 5th East
Turn left onto US 20 BUS / North 5th East
Navigation decision point
5
67.9 mi into trip|~1h 30m in|West Stone Run Lane
Turn right onto West Stone Run Lane
Navigation decision point
5
67.9 mi into trip|~1h 31m in|Charleston Lane
Turn left onto Charleston Lane
Navigation decision point
Main Roads
Road
Distance
Duration
Idaho Medal of Honor Highway
40.8 mi
45m
Yellowstone Highway
17.2 mi
18m
South Antelope Flat Road
4.3 mi
16m
North Holmes Avenue
3.9 mi
7m
Rigby Highway
0.6 mi
<1m
East Sunnyside Road
0.5 mi
<1m
US 20 BUS
0.2 mi
<1m
North 5th East
0.2 mi
<1m
Longest stretch:
Idaho Medal of Honor Highway
— 40.8 mi, about 45m
Turn-by-Turn Driving Directions
Step-by-step road directions between Fremont County, ID and Idaho Falls, ID.
1
Start on South Antelope Flat Road
4.3 mi·16 min·South Antelope Flat Road
2
At end of road, turn right onto US 20
25 mi·28 min·Idaho Medal of Honor Highway
3
Continue on US 20
17 mi·18 min·Yellowstone Highway
4
Continue on US 20
15 mi·16 min·Idaho Medal of Honor Highway
5
Continue on US 20
0.6 mi·38 sec·Rigby Highway
6
Take the exit onto US 20 BUS
0.2 mi·38 sec·US 20 BUS
Exit 310Toward US 20 Business: Lewisville, Idaho Falls
7
Turn left onto US 20 BUS
0.2 mi·15 sec·North 5th East
8
Continue on US 20 BUS
3.9 mi·7 min·North Holmes Avenue
9
Turn right onto East Sunnyside Road
0.5 mi·51 sec·East Sunnyside Road
10
Turn left onto Stonebrook Lane
466 ft·14 sec·Stonebrook Lane
11
Turn right onto West Stone Run Lane
241 ft·16 sec·West Stone Run Lane
12
Turn left onto Charleston Lane
152 ft·6 sec·Charleston Lane
13
Arrive at destination
Charleston Lane
Trip Plan
Morning Departure
Leave by 9 AM and you'll arrive before lunch.
Evening Departure
Even a 4 PM departure gets you there before dark in summer.
You can normally do this drive in one day.
You may only need one short stretch break if traffic stays light.
The halfway point lands around 34 miles from Fremont County, ID, or about 49m into the drive.
The longest continuous stretch on this route runs about 40.8 miles.
This is a comfortable same-day trip.
Departure
Before you leave
Start with fuel, water, and navigation already sorted so the first hour feels easy.
First stop
Around 15 miles or 28m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 34 miles or 49m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Final approach
Final hour starts around 1h 15m
Traffic, exits, and arrival timing usually matter more near Idaho Falls, ID than in the middle of the route.
Before You Leave
+
Open the route before leaving Fremont County, ID so your first major turns are already loaded.
Day 1
Settle into the route from Fremont County, ID
This is one driving day of about 68 miles and 1h 31m.
Your first comfortable stop window is around 15 miles from Fremont County, ID.
This route can stay practical as a one-day drive if traffic stays reasonable.
The longest stretch is on Idaho Medal of Honor Highway for about 40.8 miles.
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
Halfway Point
Midpoint
About 34 mi from Fremont County, ID
· 49m into the drive
Station data from NREL Alternative Fuel Stations database.
Driving Electric?
About $7 in charging
· 0 stops
· 67% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
20.4
0
$7.14
$3.26
Efficient EV
17
0
$5.95
$2.72
EV Truck/SUV
27.2
0
$9.52
$4.35
Gas CO2
24 kg
EV CO2
8 kg (67% less)
This trip is well within single-charge range for most EVs. No charging stops needed if you start fully charged.
DC fast charging avg $0.35/kWh. Home charging avg $0.16/kWh. US grid CO2: 0.39 kg/kWh.
Travel Intel
Current conditions at both ends of the drive.
Forecast as of Apr 16, 2026
Origin
Fremont County, ID
Late night
in Fremont County on Saturday
Local time
5:36 AM
MDT
Current temp
59°F
Unavailable
Live forecast
Destination
Idaho Falls, ID
Late night
in Idaho Falls on Saturday
Local time
5:36 AM
MDT
Current temp
63°F
Unavailable
Live forecast
Seasonal Notes
Summer travel usually means heavier construction, hotter rest stops, and busier weekend traffic around major cities.
Winter travel shortens daylight, so a route that looks manageable on paper can feel much longer after dark.
Holiday weekends tend to make both departure and arrival windows slower than the raw route time suggests.
Time zone
Same local time
Origin and destination are on the same clock, so arrival timing is easier to judge at a glance.
Temperature spread
4 degrees warmer at arrival
A meaningful temperature swing is a good cue to rethink layers, water, and how soon you want to arrive.
Road read
1h 31m on the road
Use the two city cards together: check the sky where you start, then compare it with the local time and temperature at arrival.
Weather data from the National Weather Service. Conditions may change; check closer to your travel date.
Frequently Asked Questions
The drive from Fremont County, ID to Idaho Falls, ID covers 68 miles and takes about 1h 31m without stops. Add 15-30 minutes for a fuel or rest stop on longer drives.
The main roads are Idaho Medal of Honor Highway, Yellowstone Highway, South Antelope Flat Road. Expect a mix of highway and local road driving.
This is a comfortable same-day trip.
The midpoint is about 34 miles from Fremont County, ID. Look for rest areas, gas stations, or food options near the halfway mark.
At current regular gas prices, expect to spend about $10.78 one way. This estimate uses 25.4 MPG — your actual cost will vary with your vehicle's fuel efficiency and current gas prices.
Leave by 9 AM and you'll arrive before lunch. Even a 4 PM departure gets you there before dark in summer.
The drive from Fremont County, ID to Idaho Falls, ID is easy. At 1h 31m with 0% highway, most drivers will find it relaxed and low-stress.
The main spots that need attention: at 4.3 miles (US 20 / Idaho Medal of Honor Highway): Navigation decision point; at 62.9 miles (US 20 BUS): Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one; at 63.2 miles (US 20 BUS / North 5th East): Navigation decision point.
The route from Fremont County, ID to Idaho Falls, ID does not surface many named destination signs beyond the main corridor.
How this page is built
Compiled by the Trip.ovh planning team at COD Solutions Oy from open government datasets — OSRM over OpenStreetMap for geometry, EIA for fuel prices, NREL for EV charging, and NPS for national parks. See our methodology for refresh cadence and limitations.
