How far is Mountain Home, ID from Ammon, ID?
The driving distance from Mountain Home, ID to Ammon, ID is about 240.4 miles (386.9 km), with a travel time of about 03h 23m by car.
- The straight-line flight distance is about 188.7 miles (303.7 km).
- For a round trip, plan for roughly 06h 47m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 6:00 AM to 8:00 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 03h 23m.
An early departure helps you fit a real stop into the day without turning the return into a late-night drive.
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 Minidoka County, Idaho, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Rain Showers
Light Rain Likely then Showers And Thunderstorms
Driving Route Map
The map below follows the saved road route between Mountain Home and Ammon.
Turn-by-Turn Driving Directions
Step-by-step road directions between Mountain Home and Ammon.
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1
Start on East 2nd North Street
592 ft · 26 sec · East 2nd North Street
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2
Turn slight right onto American Legion Boulevard
1.4 mi · 2 min · American Legion Boulevard
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3
Take the ramp right toward I 84 East, US 26 East, US 30 East
1391 ft · 34 sec
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4
Merge slight left onto Vietnam Veterans Memorial Highway
125.8 mi · 1 hr 58 min · Vietnam Veterans Memorial Highway
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5
Continue straight
62.7 mi · 59 min
-
6
Keep slight left to continue on Idaho Falls
3046 ft · 40 sec
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7
Merge slight right
43.2 mi · 41 min
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8
Take the exit slight right toward I 15 Business, US 26: Ammon, Jackson
1448 ft · 36 sec
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9
Turn right onto West Sunnyside Road
5.9 mi · 9 min · West Sunnyside Road
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10
Turn left onto Central Avenue
753 ft · 35 sec · Central Avenue
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11
Turn right onto Molen Street
41 m · 6 sec · Molen Street
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12
Arrive at your destination
0 m · 1 sec · Molen Street
Car Route Details
A richer read on the saved driving route between Mountain Home and Ammon.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
Vietnam Veterans Memorial Highway
Merge slight left onto Vietnam Veterans Memorial Highway
126 mi · 01h 58m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A longer out-and-back drive
This is still possible in one day, but it becomes a long driving day. Leaving early and planning your stop window matters more here.
Rain Showers leaving Mountain Home and Light Rain Likely then Showers And Thunderstorms near Ammon.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Mountain Home to Ammon?
The road trip is about 240.4 miles (386.9 km) and usually takes 03h 23m in normal driving conditions.
Is this a same-day trip or an overnight route?
This is still possible in one day, but it becomes a long driving day. Leaving early and planning your stop window matters more here.
What is the halfway point on this route?
Rupert is a useful midpoint, sitting about 120 miles from Mountain Home and 120.4 miles from Ammon.
How much longer is the road route than the straight-line distance?
The direct path is about 188.7 miles (303.7 km), while the road route adds roughly 51.7 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 8:00 AM MDT. If you want a more comfortable same-day return, try to leave by 10:12 AM MDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $33.05 one way or $66.10 round trip. Estimated CO2 is about 75.5 kg one way.
What should you check before leaving?
Before you leave, expect Rain Showers around Mountain Home and Light Rain Likely then Showers And Thunderstorms near Ammon.
Stop Ideas Near Rupert
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 Rupert.
Twin Falls, Idaho
Flight Path Map
This map shows the direct air route between Mountain Home and Ammon. Straight-line distance: 188.7 mi (303.69 km).
#1 Mountain Home
City in Elmore, Idaho, United States
| Population | 14,562 |
| Coordinates | 43.1329500, -115.6912000 |
| Altitude | 959 |
| Country | United States |
#2 Ammon
City in Idaho, United States
| Population | 17,115 |
| Coordinates | 43.4696400, -111.9666400 |
| Altitude | 1437 |
| Country | United States |
End: Molen Street (-111.966641, 43.469622)
Estimated Travel Time
Distance: 387 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 08h 00m |
| 40 mph (64.37 km/h) | 06h 00m |
| 50 mph (80.47 km/h) | 04h 48m |
| 60 mph (96.56 km/h) | 04h 00m |
| 70 mph (112.65 km/h) | 03h 26m |
| 80 mph (129 km/h) | 02h 59m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.89 | $33.05 | $66.10 |
| Mid-grade | $4.23 | $35.92 | $71.84 |
| Premium | $4.55 | $38.62 | $77.24 |
| Diesel | $5.41 | $45.95 | $91.90 |
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 23, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.