How far is Iona, ID from Nampa, ID?
The driving distance from Iona, ID to Nampa, ID is about 283.5 miles (456.3 km), with a travel time of about 04h 53m by car.
- The straight-line flight distance is about 231.9 miles (373.2 km).
- For a round trip, plan for roughly 09h 46m 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 53m.
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.
Driving Route Map
The map below follows the saved road route between Iona and Nampa.
Turn-by-Turn Driving Directions
Step-by-step road directions between Iona and Nampa.
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1
Start on Olson Avenue
129 m · 20 sec · Olson Avenue
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2
Turn right onto East Iona Road
2979 ft · 1 min · East Iona Road
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3
Enter the roundabout and take exit 2 toward East Iona Road
39 m · 2 sec · East Iona Road
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4
Exit the roundabout onto East Iona Road
2 mi · 3 min · East Iona Road
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5
Enter the roundabout and take exit 2 toward East Iona Road
33 m · 2 sec · East Iona Road
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6
Exit the roundabout onto East Iona Road
2 mi · 4 min · East Iona Road
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7
At the end of the road, turn right onto North 5th East
1031 ft · 27 sec · North 5th East
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8
Take the ramp left
1734 ft · 42 sec
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9
Merge slight left onto Rigby Highway
2 mi · 3 min · Rigby Highway
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10
Merge slight right onto Grandview Drive
575 ft · 14 sec · Grandview Drive
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11
Take the exit slight right toward I 15 South: Arco, Pocatello
1466 ft · 37 sec
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12
Merge slight left onto Veterans Memorial Highway
46.5 mi · 44 min · Veterans Memorial Highway
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13
Take the exit slight right toward I 86 West: Chubbuck, Twin Falls
1 km · 44 sec
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14
Continue straight
62.7 mi · 59 min
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15
Continue on Vietnam Veterans Memorial Highway
183 mi · 2 hr 55 min · Vietnam Veterans Memorial Highway
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16
Take the exit slight right toward I 84 Business: Garrity Boulevard, Idaho Center Boulevard
1901 ft · 53 sec
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17
Turn left onto Garrity Boulevard
1.4 mi · 3 min · Garrity Boulevard
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18
Turn left onto North Kings Road
1.2 km · 1 min · North Kings Road
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19
Enter the roundabout and take exit 2 toward South Kings Road
38 m · 3 sec · South Kings Road
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20
Exit the roundabout onto South Kings Road
1 mi · 2 min · South Kings Road
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21
Turn right onto East Amity Avenue
1.2 mi · 2 min · East Amity Avenue
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22
Continue on Diamond Street
792 ft · 16 sec · Diamond Street
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23
Continue on East Colorado Avenue
1143 ft · 35 sec · East Colorado Avenue
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24
Turn left onto Holly Street
1556 ft · 45 sec · Holly Street
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25
Continue on Sunny Ridge Road
1.6 km · 2 min · Sunny Ridge Road
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26
Turn right onto Stony Meadow Drive
57 m · 8 sec · Stony Meadow Drive
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27
Arrive at your destination
0 m · 1 sec · Stony Meadow Drive
Car Route Details
A richer read on the saved driving route between Iona and Nampa.
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
Continue on Vietnam Veterans Memorial Highway
183 mi · 02h 55m
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.
Sunny leaving Iona and Sunny near Nampa.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Iona to Nampa?
The road trip is about 283.5 miles (456.3 km) and usually takes 04h 53m 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 153.2 miles from Iona and 130.4 miles from Nampa.
How much longer is the road route than the straight-line distance?
The direct path is about 231.9 miles (373.2 km), while the road route adds roughly 51.6 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 7:14 AM MDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $38.97 one way or $77.94 round trip. Estimated CO2 is about 89 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Iona and Sunny near Nampa.
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 Iona and Nampa. Straight-line distance: 231.91 mi (373.23 km).
#1 Iona
City in Idaho, United States
| Population | 2,354 |
| Coordinates | 43.5263000, -111.9330200 |
| Altitude | 1458 |
| Country | United States |
#2 Nampa
The most populous city in Canyon County, Idaho.
| Population | 99,277 |
| Coordinates | 43.5407200, -116.5634600 |
| Altitude | 767 |
| Country | United States |
End: Stony Meadow Drive (-116.563329, 43.541003)
Estimated Travel Time
Distance: 456 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 09h 26m |
| 40 mph (64.37 km/h) | 07h 05m |
| 50 mph (80.47 km/h) | 05h 40m |
| 60 mph (96.56 km/h) | 04h 43m |
| 70 mph (112.65 km/h) | 04h 03m |
| 80 mph (129 km/h) | 03h 32m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.89 | $38.97 | $77.94 |
| Mid-grade | $4.23 | $42.35 | $84.70 |
| Premium | $4.55 | $45.54 | $91.07 |
| Diesel | $5.41 | $54.17 | $108.35 |
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 · May 13, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.