How far is Iona, ID from Lewiston, ID?
The driving distance from Iona, ID to Lewiston, ID is about 535.6 miles (861.9 km), with a travel time of about 09h 21m by car.
- The straight-line flight distance is about 318.7 miles (512.9 km).
- For a round trip, plan for roughly 18h 43m 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 09h 21m.
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 Lemhi County, Idaho, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Sunny
Driving Route Map
The map below follows the saved road route between Iona and Lewiston.
Turn-by-Turn Driving Directions
Step-by-step road directions between Iona and Lewiston.
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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
1.9 mi · 3 min · Rigby Highway
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10
Take the exit slight right
1397 ft · 34 sec
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11
Merge slight left onto Veterans Memorial Highway
197.6 mi · 3 hr 5 min · Veterans Memorial Highway
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12
Take the exit slight left toward I 90 West: Missoula
2808 ft · 1 min
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13
Merge slight left onto I 90 West: Missoula
112.1 mi · 1 hr 46 min
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14
Take the exit slight right toward US 12 West, I 90 Business
1037 ft · 26 sec
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15
Enter the roundabout and take exit 3 toward Van Buren Street
63 m · 3 sec · Van Buren Street
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16
Exit the roundabout onto Van Buren Street
65 m · 4 sec · Van Buren Street
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17
Enter the roundabout and take exit 1 toward Van Buren Street
28 m · 1 sec · Van Buren Street
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18
Exit the roundabout onto Van Buren Street
583 ft · 11 sec · Van Buren Street
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19
Turn right onto East Broadway Street
1143 ft · 23 sec · East Broadway Street
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20
Turn left onto Madison Street
1419 ft · 18 sec · Madison Street
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21
Continue on Arthur Avenue
543 ft · 9 sec · Arthur Avenue
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22
Turn right onto South 5th Street East
2052 ft · 36 sec · South 5th Street East
-
23
Turn left onto South Higgins Avenue
716 ft · 28 sec · South Higgins Avenue
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24
Turn right onto Brooks Street
3.3 mi · 5 min · Brooks Street
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25
Continue on Bitteroot Road
3 mi · 4 min · Bitteroot Road
-
26
Continue on US Highway 93 South
4 mi · 6 min · US Highway 93 South
-
27
Turn right onto Lolo Creek Road
32.6 mi · 39 min · Lolo Creek Road
-
28
Continue straight
163.6 mi · 3 hr 42 min
-
29
Take the exit slight right
7.5 mi · 9 min
-
30
Keep slight left to continue on Lewiston
1.6 mi · 3 min
-
31
Turn right onto Idaho Street
1.2 km · 2 min · Idaho Street
-
32
Turn left
32 m · 8 sec
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33
Arrive at your destination
0 m · 1 sec
Car Route Details
A richer read on the saved driving route between Iona and Lewiston.
Long-distance drive
This route is long enough that fuel, rest stops, weather, and timing matter more than any single maneuver.
Veterans Memorial Highway
Merge slight left onto Veterans Memorial Highway
198 mi · 03h 05m
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.
Sunny leaving Iona and Mostly Sunny near Lewiston.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Iona to Lewiston?
The road trip is about 535.6 miles (861.9 km) and usually takes 09h 21m 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?
Salmon is a useful midpoint, sitting about 267.5 miles from Iona and 268.1 miles from Lewiston.
How much longer is the road route than the straight-line distance?
The direct path is about 318.7 miles (512.9 km), while the road route adds roughly 216.9 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 $73.58 one way or $147.16 round trip. Estimated CO2 is about 168 kg one way.
Do you cross a time zone on this route?
Yes. There is about a 1 hour time difference between Iona and Lewiston, so arrival and return times should be read in local time.
What should you check before leaving?
Before you leave, expect Sunny around Iona and Mostly Sunny near Lewiston.
Flight Path Map
This map shows the direct air route between Iona and Lewiston. Straight-line distance: 318.71 mi (512.92 km).
#1 Iona
City in Idaho, United States
| Population | 2,354 |
| Coordinates | 43.5263000, -111.9330200 |
| Altitude | 1458 |
| Country | United States |
#2 Lewiston
City in Nez Perce County, Idaho, USA
| Population | 32,788 |
| Coordinates | 46.4165500, -117.0176600 |
| Altitude | 227 |
| Country | United States |
End: Idaho Street (-117.0175, 46.416816)
Estimated Travel Time
Distance: 862 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 17h 50m |
| 40 mph (64.37 km/h) | 13h 23m |
| 50 mph (80.47 km/h) | 10h 42m |
| 60 mph (96.56 km/h) | 08h 55m |
| 70 mph (112.65 km/h) | 07h 39m |
| 80 mph (129 km/h) | 06h 40m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.89 | $73.58 | $147.16 |
| Mid-grade | $4.23 | $79.97 | $159.93 |
| Premium | $4.55 | $85.98 | $171.95 |
| Diesel | $5.41 | $102.29 | $204.57 |
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.