Origin
Idaho Falls, ID
Afternoon in Idaho Falls on Saturday
Local time
12:26 PM
MDT
Current temp
63°F
Unavailable
Live forecast
Trip from Idaho Falls, ID to Fremont County, ID
Compiled and reviewed by the Trip.ovh planning team at COD Solutions Oy · Last reviewed Apr 18, 2026 · Editorial standards
Drive Time
1h 31m
Distance
67.9 mi
109 km
Drive Score
7/10
Good drive
Same Day?
Yes, doable
Fuel Cost
$11
one way
EV Charging
Unknown
Best Time to Leave
4 AM
1h 24m
★
6 AM
1h 31m
8 AM
1h 45m
10 AM
1h 36m
12 PM
1h 35m
3 PM
1h 37m
5 PM
1h 44m
8 PM
1h 27m
Estimated drive times based on typical traffic patterns. Actual times may vary with weather, construction, and real-time conditions.
Idaho Falls, ID
Wikimedia Commons
Fremont County, ID
David McElwee
Trip Overview
The drive from Idaho Falls, ID to Fremont County, ID covers 67.9 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 mostly surface roads. The longest uninterrupted segment is about 40.9 miles on Idaho Medal of Honor Highway. At current regular gas prices, budget about $10.76 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
33.9 miles from Idaho Falls, ID
A natural place for your longest stop of the day , about 41m into the drive .
Main Roads
| Road | Distance | Duration |
|---|---|---|
| Idaho Medal of Honor Highway | 40.9 mi | 45m |
| Yellowstone Highway | 17.2 mi | 18m |
| South Antelope Flat Road | 4.3 mi | 16m |
| South Holmes Avenue | 3.9 mi | 7m |
| Rigby Highway | 0.6 mi | <1m |
| East Sunnyside Road | 0.5 mi | <1m |
| US 20 BUS | 0.4 mi | <1m |
| Stonebrook Lane | <0.1 mi | <1m |
Longest stretch:
Idaho Medal of Honor Highway
— 40.9 mi, about 45m
Turn-by-Turn Driving Directions
Step-by-step road directions between Idaho Falls, ID and Fremont County, ID.
1
Start on Charleston Lane
152 ft
·
8 sec
·
Charleston Lane
2
Turn right onto West Stone Run Lane
241 ft
·
15 sec
·
West Stone Run Lane
3
Turn left onto Stonebrook Lane
466 ft
·
16 sec
·
Stonebrook Lane
4
Turn right onto East Sunnyside Road
0.5 mi
·
51 sec
·
East Sunnyside Road
5
Turn left onto South Holmes Avenue
1.1 mi
·
1 min
·
South Holmes Avenue
6
Turn straight onto South Holmes Avenue
2.9 mi
·
6 min
·
South Holmes Avenue
7
Take the ramp onto US 20 BUS
0.4 mi
·
47 sec
·
US 20 BUS
Toward Rigby, West Yellowstone
8
Merge onto US 20
0.6 mi
·
37 sec
·
Rigby Highway
9
Continue on US 20
15 mi
·
16 min
·
Idaho Medal of Honor Highway
10
Continue on US 20
17 mi
·
18 min
·
Yellowstone Highway
11
Continue on US 20
25 mi
·
28 min
·
Idaho Medal of Honor Highway
12
Turn left onto South Antelope Flat Road
4.3 mi
·
16 min
·
South Antelope Flat Road
13
Arrive at destination
South Antelope Flat Road
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 33.9 miles from Idaho Falls, ID, or about 41m into the drive.
The longest continuous stretch on this route runs about 40.9 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 21m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 33.9 miles or 41m 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 7m
Traffic, exits, and arrival timing usually matter more near Fremont County, ID than in the middle of the route.
Before You Leave
+
Open the route before leaving Idaho Falls, ID so your first major turns are already loaded.
Day 1
Settle into the route from Idaho Falls, ID
This is one driving day of about 67.9 miles and 1h 31m.
Your first comfortable stop window is around 15 miles from Idaho Falls, 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 40.9 miles.
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
Mid-route town
Meal stop
34 mi into the route
Best for: Lunch, fuel, and a longer reset
This sits close to the middle of the route, so it works well for the longest stop of the day.
Pacing Suggestions
Fuel and coffee
A short stop after about 15 miles helps settle the day before fatigue starts building.
Meal break
The midpoint is around 33.9 miles from Idaho Falls, ID, which is a good place for a longer meal and fuel stop.
These stop ideas are pacing suggestions — the exact town or exit can change with traffic, hotel plans, and fuel range.
Heads-up: tricky spots
5 of 75 decision points cluster between mile 0 and 4.6 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
5
0 mi into trip
|
~0m in
|
West Stone Run Lane
Turn right onto West Stone Run Lane
Navigation decision point
5
0.1 mi into trip
|
~0m in
|
Stonebrook Lane
Turn left onto Stonebrook Lane
Navigation decision point
4
0.2 mi into trip
|
~0m in
|
East Sunnyside Road
Turn right onto East Sunnyside Road
Navigation decision point
4
0.7 mi into trip
|
~1m in
|
South Holmes Avenue
Turn left onto South Holmes Avenue
Navigation decision point
4
4.6 mi into trip
|
~9m in
|
US 20 BUS
Take the ramp onto US 20 BUS toward Rigby, West Yellowstone
Multiple destination signs - pick the right one
Toward Rigby, West Yellowstone
Fuel & Cost
Regular Gas
$10.76 one way
$21.52 round trip
$4.03/gal
25.4 MPG avg
24 kg CO2
| Fuel Type | $/gal | One Way | Round Trip |
|---|---|---|---|
| midgrade | $4.22 | $11.28 | $22.56 |
| premium | $4.53 | $12.11 | $24.22 |
| diesel | $5.61 | $14.99 | $29.98 |
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$11
Meals
$25–$50
Total
$36–$61
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 23.8 kg one way. Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $7 in charging · 0 stops · 67% less CO2
| Vehicle Type | kWh | Stops | DC Fast | Home Charge |
|---|---|---|---|---|
| Average EV | 20.4 | 0 | $7.13 | $3.26 |
| Efficient EV | 17 | 0 | $5.94 | $2.72 |
| EV Truck/SUV | 27.2 | 0 | $9.51 | $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.
Destination
Fremont County, ID
Afternoon in Fremont County on Saturday
Local time
12:26 PM
MDT
Current temp
59°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 cooler 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.
What kind of drive is this?
67.9 mi in 1h 31m across surface roads — expect steady turns and local traffic rather than long highway runs.
Only 1% highway — the rest is turn-by-turn surface driving.
13 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 40.9 mi on Idaho Medal of Honor Highway.
How Hard Is This Drive?
2/10
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 early in the drive near West Stone Run Lane.
Driving Effort
2/10
Very easy - short and simple to drive
Balances navigation complexity with total wheel time.
The drive from Idaho Falls, ID to Fremont County, ID is easy. At 1h 31m with 1% highway, most drivers will find it relaxed and low-stress.
Where does it get tricky?
The main spots that need attention: near the start (West Stone Run Lane): Navigation decision point; at 0.1 miles (Stonebrook Lane): Navigation decision point; at 0.2 miles (East Sunnyside Road): Navigation decision point.
Towns Mentioned on Route Signs
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
Towns Mentioned on Route Signs
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
Between Idaho Falls, ID and Fremont County, ID, road signs point toward Rigby and Yellowstone.
Rigby
4.6 mi in
|
~9m
|
via US 20 BUS
Yellowstone
4.6 mi in
|
~9m
|
via US 20 BUS
Who Is This Route For?
Weekend Trip
Doable as a same-day drive at 1h 31m. Total distance: 67.9 miles.
Family Friendly
Moderate complexity with 0 natural rest stops along the way.
Solo Traveler
1h 31m drive, comfortable solo distance.
First-Time Driver
Mostly highway driving (1%). Straightforward navigation.
Scenic Drive
Mostly surface roads route profile.
Frequently Asked Questions
The longest stretch is about 40.9 miles on Idaho Medal of Honor Highway. The full list of main roads is in the Roads section above.
Yes. At under 2 hours behind the wheel, this works well for families — plan one quick stop if you have younger kids.
Mostly yes along the main roads, but rural stretches through ID can have sparse or no coverage. Before you leave, download offline Google Maps or Apple Maps for the route, and consider downloading music or podcasts instead of streaming. If you depend on data for navigation, keep a paper backup of the turn-by-turn directions.
The main spots that need attention: near the start (West Stone Run Lane): Navigation decision point; at 0.1 miles (Stonebrook Lane): Navigation decision point; at 0.2 miles (East Sunnyside Road): Navigation decision point.
Yes. A round trip is manageable in a single day if you plan a break at Fremont County, ID before heading back.
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, and EIA for fuel prices. See our methodology for refresh cadence and limitations.
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