The drive from Fremont County, ID to Caldwell, ID covers 370.2 miles and takes about 6h 20m behind the wheel.
This route is realistic as a one-day drive if you keep your stops efficient.
The route leans on Vietnam Veterans Memorial Highway, I 86, Veterans Memorial Highway for much of the mileage,
and the overall profile is turn-heavy local drive.
The longest uninterrupted segment is about 192.4 miles on Vietnam Veterans Memorial Highway.
At current regular gas prices, budget about $58.66 one way before food or hotel costs.
Trip Pace
Same-day drive is realistic
A same-day return is possible, but it will make for a full day on the road.
Break Rhythm
1 planned break
Plan on a short reset every 3 to 4 hours to stay fresh behind the wheel.
Midpoint
185.1 miles from Fremont County, ID
A natural place for your longest stop of the day
, about 3h 18m into the drive
.
Who Is This Route For?
Weekend Trip
Doable as a same-day drive at 6h 20m. Total distance: 370.2 miles.
Family Friendly
Moderate complexity with 1 natural rest stops along the way.
Solo Traveler
6h 20m drive, plan rest stops for pacing.
Scenic Drive
Turn-heavy local drive route profile with national parks nearby.
Drive Character
Expect a 6h 20m drive with frequent turns across 370.2 miles of local and secondary roads.
This route has more turning and local-road decision points than a simple highway run.
There are about 19 navigation steps in the underlying route data, so the final approach matters more than the middle miles.
Vietnam Veterans Memorial Highway is the longest continuous segment at about 192.4 miles.
How Hard Is This Drive?
Expect a hands-on drive with frequent turns and local roads rather than long highway stretches. There are only a few real navigation decisions along the way. The trickiest moment comes around 4.3 miles in near US 20 / Idaho Medal of Honor Highway.
Driving Effort4/10
Easy - simple navigation with a manageable amount of wheel time
Balances navigation complexity with total wheel time.
The route itself is not hard, but at 6h 20m, endurance matters. Plan breaks every 2-3 hours. The 11 decision points are all manageable with basic attention.
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 65.6 miles (US 20): Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one; at 112.4 miles: Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one.
Critical Maneuvers
5 of 11 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
65.6 mi into trip|~1h 24m in|US 20
Take the exit onto US 20 toward I 15 South: Arco, Pocatello
Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one
Toward I 15 South: Arco, Pocatello
6
112.4 mi into trip|~2h 9m in
Take the exit toward I 86 West: Chubbuck, Twin Falls
Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one
Exit 72
Toward I 86 West: Chubbuck, Twin Falls
7
368.1 mi into trip|~6h 15m in
Take the exit toward US 20, US 26 East
Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one
Use the straight / left lanes.
Toward US 20, US 26 East
5
370.2 mi into trip|~6h 19m in
Turn left
Navigation decision point
Towns Mentioned on Route Signs
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
Between Fremont County, ID and Caldwell, ID, road signs point toward Pocatello and Twin Falls.
Pocatello
65.6 mi in|~1h 24m|via US 20
Twin Falls
112.4 mi in|~2h 9m
Main Roads
Road
Distance
Duration
Vietnam Veterans Memorial Highway
192.4 mi
3h 6m
I 86
62.7 mi
59m
Veterans Memorial Highway
46.5 mi
44m
Idaho Medal of Honor Highway
40.8 mi
45m
Yellowstone Highway
17.2 mi
18m
South Antelope Flat Road
4.3 mi
16m
Rigby Highway
3.1 mi
3m
Blaine Street
0.8 mi
1m
Longest stretch:
Vietnam Veterans Memorial Highway
— 192.4 mi, about 3h 6m
Turn-by-Turn Driving Directions
Step-by-step road directions between Fremont County, ID and Caldwell, 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
3.1 mi·3 min·Rigby Highway
6
Merge onto US 20
0.1 mi·14 sec·Grandview Drive
7
Take the exit onto US 20
0.3 mi·36 sec·US 20
Toward I 15 South: Arco, Pocatello
8
Merge onto I 15; US 20
47 mi·44 min·Veterans Memorial Highway
9
Take the exit
0.6 mi·43 sec
Exit 72Toward I 86 West: Chubbuck, Twin Falls
10
Continue on I 86
63 mi·59 min·I 86
11
Continue on I 84; US 30
192 mi·3 hr 6 min·Vietnam Veterans Memorial Highway
Use the straight / slight right lanes.
12
Take the exit
0.2 mi·36 sec
Toward US 20, US 26 EastUse the straight / left lanes.
13
Turn left onto US 20; US 26
0.4 mi·52 sec·Franklin Road
14
Continue on North 21st Avenue
0.6 mi·1 min·North 21st Avenue
15
Turn right onto I 84 Business
0.8 mi·1 min·Blaine Street
16
Turn left onto South 10th Avenue
166 ft·9 sec·South 10th Avenue
17
Turn left
68 ft·6 sec
18
Turn right
79 ft·5 sec
19
Arrive at destination
Trip Plan
Morning Departure
Start early — leave by 6-7 AM to arrive at a reasonable hour.
Evening Departure
This is a long drive — plan for a morning departure or consider splitting it into two days.
You can normally do this drive in one day.
Plan roughly 1 meaningful break for fuel, food, and rest.
The halfway point lands around 185.1 miles from Fremont County, ID, or about 3h 18m into the drive.
The longest continuous stretch on this route runs about 192.4 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 81 miles or 1h 39m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 185.1 miles or 3h 18m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Final approach
Final hour starts around 5h 19m
Traffic, exits, and arrival timing usually matter more near Caldwell, 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.
+
Leave with enough water and a charging cable within reach, not packed away.
+
Check your fuel range against the first long segment, especially if you are starting outside city service areas.
Day 1
Settle into the route from Fremont County, ID
This is one driving day of about 370.2 miles and 6h 20m.
Your first comfortable stop window is around 81 miles from Fremont County, ID.
This route can stay practical as a one-day drive if traffic stays reasonable.
Plan about 1 real break rather than only quick fuel stops.
The longest stretch is on Vietnam Veterans Memorial Highway for about 192.4 miles.
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
Halfway Point
Midpoint
About 185.1 mi from Fremont County, ID
· 3h 18m into the drive
The midpoint is around 185.1 miles from Fremont County, ID, which is a good place for a longer meal and fuel stop.
Before the longest stretch
Fuel check
Top up before Vietnam Veterans Memorial Highway if your tank is already low. That segment runs about 192.4 miles.
Arriving in Caldwell, ID
The final approach into Caldwell, ID usually feels slower than the middle of the drive, so avoid planning your tightest schedule at the very end.
Try to arrive with enough fuel left to skip an immediate station stop unless you already know the area around Caldwell, ID.
After long uninterrupted mileage, take five minutes before the last urban segment to reset and refocus on exits, merges, and city traffic.
These stop ideas are pacing suggestions — the exact town or exit can change with traffic, hotel plans, and fuel range.
National Parks Near This Route
Worth a detour if your schedule allows.
Hagerman Fossil Beds National Monument
National Monument
During the Pliocene, this place looked quite different. Lush wetlands, forests, and grasslands provided excellent habitat for a variety of animals. From fascinating, now-extinct creatures like the sab...
8 mi from route
~21 min detour
Free
near mile 255.3
Caution: Use Caution with "Fossil Beds Information" Signs
Caution: If You Can't Reach Us By Phone, Please Email Us
Park data from the National Park Service API. Alerts update every 2 hours.
Fuel & Cost
Regular Gas
$58.66 one way
$117.33 round trip
$4.03/gal25.4 MPG avg130 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.22
$61.49
$122.98
premium
$4.53
$66.04
$132.08
diesel
$5.61
$81.74
$163.47
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$59
Meals
$25–$50
Total
$84–$109
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 129.5 kg one way.
Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $39 in charging
· 1 stop
· 67% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
111.1
1
$38.87
$17.77
Efficient EV
92.6
1
$32.39
$14.81
EV Truck/SUV
148.1
1
$51.83
$23.69
Gas CO2
130 kg
EV CO2
43 kg (67% less)
Plan for 1 charging stop. A 30-minute DC fast charge mid-route should be enough to complete the trip comfortably.
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
3:39 AM
MDT
Current temp
59°F
Unavailable
Live forecast
Destination
Caldwell, ID
Late night
in Caldwell on Saturday
Local time
3:39 AM
MDT
Current temp
62°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
3 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
6h 20m on the road
Start early — leave by 6-7 AM to arrive at a reasonable hour.
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 Caldwell, ID covers 370.2 miles and takes about 6h 20m without stops. Add 15-30 minutes for a fuel or rest stop on longer drives.
The main roads are Vietnam Veterans Memorial Highway, I 86, Veterans Memorial Highway. Expect a mix of highway and local road driving.
This is a comfortable same-day trip.
The midpoint is about 185.1 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 $58.66 one way. This estimate uses 25.4 MPG — your actual cost will vary with your vehicle's fuel efficiency and current gas prices.
Start early — leave by 6-7 AM to arrive at a reasonable hour. This is a long drive — plan for a morning departure or consider splitting it into two days.
Plan about 1 meaningful break for fuel, food, or rest. Plan on a short reset every 3 to 4 hours to stay fresh behind the wheel.
The route itself is not hard, but at 6h 20m, endurance matters. Plan breaks every 2-3 hours. The 11 decision points are all manageable with basic attention.
The main spots that need attention: at 4.3 miles (US 20 / Idaho Medal of Honor Highway): Navigation decision point; at 65.6 miles (US 20): Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one; at 112.4 miles: Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one.
Between Fremont County, ID and Caldwell, ID, road signs point toward Pocatello and Twin Falls.
Yes. Nearby national parks include Hagerman Fossil Beds National Monument.
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, and NPS for national parks. See our methodology for refresh cadence and limitations.
