How far is Iona, ID from Boise, ID?
The driving distance from Iona, ID to Boise, ID is about 264.4 miles (425.5 km), with a travel time of about 04h 25m by car.
- The straight-line flight distance is about 213.8 miles (344.1 km).
- For a round trip, plan for roughly 08h 51m 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 25m.
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 Boise.
Turn-by-Turn Driving Directions
Step-by-step road directions between Iona and Boise.
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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
166.5 mi · 2 hr 36 min · Vietnam Veterans Memorial Highway
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16
Take the exit slight right toward US 20, US 26: Broadway Avenue
1402 ft · 34 sec · Idaho Medal of Honor Highway
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17
Keep slight right to continue on Idaho Medal of Honor Highway
134 m · 13 sec · Idaho Medal of Honor Highway
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18
Turn right onto South Broadway Avenue
2.9 mi · 6 min · South Broadway Avenue
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19
Turn left onto East Front Street
1 km · 2 min · East Front Street
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20
Turn right
17 m · 4 sec
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21
Arrive at your destination
0 m · 1 sec
Car Route Details
A richer read on the saved driving route between Iona and Boise.
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
166 mi · 02h 36m
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 Boise.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Iona to Boise?
The road trip is about 264.4 miles (425.5 km) and usually takes 04h 25m 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?
Hazelton is a useful midpoint, sitting about 143.7 miles from Iona and 120.7 miles from Boise.
How much longer is the road route than the straight-line distance?
The direct path is about 213.8 miles (344.1 km), while the road route adds roughly 50.6 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 8:08 AM MDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $36.32 one way or $72.64 round trip. Estimated CO2 is about 82.9 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Iona and Sunny near Boise.
Stop Ideas Near Hazelton
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 Hazelton.
Twin Falls, Idaho
Flight Path Map
This map shows the direct air route between Iona and Boise. Straight-line distance: 213.84 mi (344.14 km).
#1 Iona
City in Idaho, United States
| Population | 2,354 |
| Coordinates | 43.5263000, -111.9330200 |
| Altitude | 1458 |
| Country | United States |
#2 Boise
The capital of Idaho.
| Population | 228,959 |
| Coordinates | 43.6135000, -116.2034500 |
| Altitude | 823 |
| Country | United States |
End: (-116.203299, 43.613424)
Estimated Travel Time
Distance: 426 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 08h 48m |
| 40 mph (64.37 km/h) | 06h 36m |
| 50 mph (80.47 km/h) | 05h 17m |
| 60 mph (96.56 km/h) | 04h 24m |
| 70 mph (112.65 km/h) | 03h 46m |
| 80 mph (129 km/h) | 03h 17m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.89 | $36.32 | $72.64 |
| Mid-grade | $4.23 | $39.48 | $78.95 |
| Premium | $4.55 | $42.44 | $84.88 |
| Diesel | $5.41 | $50.49 | $100.99 |
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.