How far is Meridian, ID from Fremont County, ID?
The driving distance from Meridian, ID to Fremont County, ID is about 354.1 miles (569.9 km), with a travel time of about 06h 00m by car.
- The straight-line flight distance is about 248 miles (399.1 km).
- For a round trip, plan for roughly 12h 01m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 6:00 AM to 7:30 AM MDT.
Reverse, save, or send this route
This drive is better planned with a longer stop or an overnight stay. Copy the route link, send it to another device, or print a clean version before you head out.
This drive is better planned with a longer stop or an overnight stay.
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 06h 00m.
Starting early still helps, but most travelers will want a longer stop or an overnight stay on a route this long.
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 Cassia County, Idaho, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Sunny
Sunny
Driving Route Map
The map below follows the saved road route between Meridian and Fremont County.
Turn-by-Turn Driving Directions
Step-by-step road directions between Meridian and Fremont County.
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1
Start on North Main Street
17 m · 6 sec · North Main Street
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2
Turn right onto East Pine Avenue
528 ft · 25 sec · East Pine Avenue
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3
Turn left onto North Meridian Road
1.3 mi · 3 min · North Meridian Road
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4
Take the ramp left toward I 84 East, US 30 East, ID 55 East: Boise
2435 ft · 32 sec
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5
Merge slight left onto Vietnam Veterans Memorial Highway
4.6 mi · 5 min · Vietnam Veterans Memorial Highway
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6
Keep slight right to continue on Vietnam Veterans Memorial Highway
172.3 mi · 2 hr 43 min · Vietnam Veterans Memorial Highway
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7
Continue straight
62.7 mi · 59 min
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8
Keep slight left to continue on Idaho Falls
3046 ft · 40 sec
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9
Merge slight right
46.3 mi · 44 min
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10
Take the exit slight right toward US 20 East, I 15: Rigby, West Yellowstone
1434 ft · 35 sec
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11
Continue on Rigby Highway
3.1 mi · 4 min · Rigby Highway
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12
Continue on Idaho Medal of Honor Highway
15.4 mi · 16 min · Idaho Medal of Honor Highway
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13
Continue on Yellowstone Highway
17.2 mi · 18 min · Yellowstone Highway
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14
Continue on Idaho Medal of Honor Highway
25.5 mi · 29 min · Idaho Medal of Honor Highway
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15
Turn left onto South Antelope Flat Road
4.3 mi · 17 min · South Antelope Flat Road
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16
Arrive at your destination
0 m · 1 sec · South Antelope Flat Road
Car Route Details
A richer read on the saved driving route between Meridian and Fremont County.
Long-distance drive
This route is long enough that fuel, rest stops, weather, and timing matter more than any single maneuver.
Vietnam Veterans Memorial Highway
Keep slight right to continue on Vietnam Veterans Memorial Highway
172 mi · 02h 43m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
Better with a longer stop
This route is long enough that most travelers will be better off planning an overnight stay or a more deliberate stop window.
Mostly Sunny leaving Meridian and Sunny near Fremont County.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Meridian to Fremont County?
The road trip is about 354.1 miles (569.9 km) and usually takes 06h 00m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route is long enough that most travelers will be better off planning an overnight stay or a more deliberate stop window.
What is the halfway point on this route?
Declo is a useful midpoint, sitting about 176.8 miles from Meridian and 177.3 miles from Fremont County.
How much longer is the road route than the straight-line distance?
The direct path is about 248 miles (399.1 km), while the road route adds roughly 106.1 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 6:00 AM to 7:30 AM MDT. Starting early still helps, but most travelers will want a longer stop or an overnight stay on a route this long.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $48.66 one way or $97.32 round trip. Estimated CO2 is about 111.1 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Sunny around Meridian and Sunny near Fremont County.
Stop Ideas Near Declo
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Declo.
Twin Falls, Idaho
Flight Path Map
This map shows the direct air route between Meridian and Fremont County. Straight-line distance: 247.98 mi (399.09 km).
#1 Meridian
The most populous city in Ada County, Idaho.
| Population | 114,161 |
| Coordinates | 43.6121100, -116.3915100 |
| Altitude | 794 |
| 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: 570 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 11h 47m |
| 40 mph (64.37 km/h) | 08h 51m |
| 50 mph (80.47 km/h) | 07h 04m |
| 60 mph (96.56 km/h) | 05h 54m |
| 70 mph (112.65 km/h) | 05h 03m |
| 80 mph (129 km/h) | 04h 25m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.89 | $48.66 | $97.32 |
| Mid-grade | $4.23 | $52.89 | $105.77 |
| Premium | $4.55 | $56.86 | $113.73 |
| Diesel | $5.41 | $67.65 | $135.30 |
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 18, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.