How far is Ammon, ID from Star, ID?
The driving distance from Ammon, ID to Star, ID is about 301.6 miles (485.4 km), with a travel time of about 04h 58m by car.
- The straight-line flight distance is about 227 miles (365.4 km).
- For a round trip, plan for roughly 09h 56m 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 04h 58m.
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 Jerome County, Idaho, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Light Rain Likely
Mostly Cloudy then Slight Chance Rain Showers
Driving Route Map
The map below follows the saved road route between Ammon and Star.
Turn-by-Turn Driving Directions
Step-by-step road directions between Ammon and Star.
-
1
Start on Molen Street
41 m · 12 sec · Molen Street
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2
Turn left onto Central Avenue
753 ft · 35 sec · Central Avenue
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3
Turn right onto East Sunnyside Road
6.1 mi · 9 min · East Sunnyside Road
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4
Take the exit left toward Blackfook, Pocatello, Salt Lake City
1307 ft · 32 sec
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5
Merge slight left onto Veterans Memorial Highway
43.1 mi · 41 min · Veterans Memorial Highway
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6
Take the exit slight right toward I 86 West: Chubbuck, Twin Falls
1 km · 44 sec
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7
Continue straight
62.7 mi · 59 min
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8
Continue on Vietnam Veterans Memorial Highway
174.9 mi · 2 hr 46 min · Vietnam Veterans Memorial Highway
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9
Take the exit slight right toward ID 55 North: Eagle, McCall
2079 ft · 51 sec
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10
Keep slight right to continue on ID 55 North: Eagle, Emmett, Mc Call
108 m · 10 sec
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11
Merge slight left onto South Eagle Road
4.5 mi · 7 min · South Eagle Road
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12
Turn left onto East Chinden Boulevard
7 mi · 10 min · East Chinden Boulevard
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13
Turn right onto North Star Road
2 mi · 4 min · North Star Road
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14
Turn left onto West State Street
14 m · 2 sec · West State Street
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15
Arrive at your destination
0 m · 1 sec · West State Street
Car Route Details
A richer read on the saved driving route between Ammon and Star.
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
Continue on Vietnam Veterans Memorial Highway
175 mi · 02h 46m
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.
Light Rain Likely leaving Ammon and Mostly Cloudy then Slight Chance Rain Showers near Star.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Ammon to Star?
The road trip is about 301.6 miles (485.4 km) and usually takes 04h 58m 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?
Eden is a useful midpoint, sitting about 150.6 miles from Ammon and 151.1 miles from Star.
How much longer is the road route than the straight-line distance?
The direct path is about 227 miles (365.4 km), while the road route adds roughly 74.6 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 7:04 AM MDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $41.42 one way or $82.84 round trip. Estimated CO2 is about 94.6 kg one way.
What should you check before leaving?
Before you leave, expect Light Rain Likely around Ammon and Mostly Cloudy then Slight Chance Rain Showers near Star.
Stop Ideas Near Eden
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 Eden.
Twin Falls, Idaho
Flight Path Map
This map shows the direct air route between Ammon and Star. Straight-line distance: 227.07 mi (365.43 km).
#1 Ammon
City in Idaho, United States
| Population | 17,115 |
| Coordinates | 43.4696400, -111.9666400 |
| Altitude | 1437 |
| Country | United States |
#2 Star
City in Ada County, Idaho, United States
| Population | 10,532 |
| Coordinates | 43.6921100, -116.4934600 |
| Altitude | 753 |
| Country | United States |
End: Star (-116.49346, 43.69211)
Estimated Travel Time
Distance: 485 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 10h 03m |
| 40 mph (64.37 km/h) | 07h 32m |
| 50 mph (80.47 km/h) | 06h 01m |
| 60 mph (96.56 km/h) | 05h 01m |
| 70 mph (112.65 km/h) | 04h 18m |
| 80 mph (129 km/h) | 03h 45m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.89 | $41.42 | $82.84 |
| Mid-grade | $4.23 | $45.02 | $90.04 |
| Premium | $4.55 | $48.40 | $96.80 |
| Diesel | $5.41 | $57.58 | $115.17 |
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.