How far is Idaho City, ID from Boise, ID?
The driving distance from Idaho City, ID to Boise, ID is about 40.5 miles (65.1 km), with a travel time of about 01h 03m by car.
- The straight-line flight distance is about 23.7 miles (38.1 km).
- For a round trip, plan for roughly 02h 06m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 8:00 AM to 10:00 AM MST.
Reverse, save, or send this route
This route works well as a day trip with time at the destination. Copy the route link, send it to another device, or print a clean version before you head out.
This route works well as a day trip with time at the destination.
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 01h 03m.
A morning start gives you useful time at the destination and keeps the return out of the late evening.
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 Ada County, Idaho, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Areas Of Fog then Sunny
Driving Route Map
The map below follows the saved road route between Idaho City and Boise.
Turn-by-Turn Driving Directions
Step-by-step road directions between Idaho City and Boise.
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1
Start on West Wall Street
139 m · 23 sec · West Wall Street
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2
Turn right onto Main Street
1065 ft · 47 sec · Main Street
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3
At the end of the road, turn right onto Ponderosa Pine Scenic Route
21.3 mi · 33 min · Ponderosa Pine Scenic Route
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4
Continue on State Highway 21
2196 ft · 34 sec · State Highway 21
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5
Continue on East Highway 21
11.3 mi · 16 min · East Highway 21
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6
Continue on East Gowen Road
1 mi · 2 min · East Gowen Road
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7
Take the ramp right toward I 84 West: Boise
1491 ft · 36 sec
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8
Continue on Idaho Medal of Honor Highway
2 mi · 2 min · Idaho Medal of Honor Highway
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9
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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10
Keep slight right to continue on Idaho Medal of Honor Highway
134 m · 13 sec · Idaho Medal of Honor Highway
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11
Turn right onto South Broadway Avenue
2.9 mi · 6 min · South Broadway Avenue
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12
Turn left onto East Front Street
1 km · 2 min · East Front Street
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13
Turn right
17 m · 4 sec
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14
Arrive at your destination
0 m · 1 sec
Car Route Details
A richer read on the saved driving route between Idaho City and Boise.
Turn-heavy local drive
The route has frequent decision points for its length, so lane choice and turn timing will matter more than cruising speed.
Ponderosa Pine Scenic Route
At the end of the road, turn right onto Ponderosa Pine Scenic Route
21.3 mi · 00h 33m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A comfortable day-trip route
This route works well as a day trip. You can leave in the morning, spend meaningful time at the destination, and still return the same day.
Areas Of Fog then Sunny leaving Idaho City and Sunny near Boise.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Idaho City to Boise?
The road trip is about 40.5 miles (65.1 km) and usually takes 01h 03m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route works well as a day trip. You can leave in the morning, spend meaningful time at the destination, and still return the same day.
What is the halfway point on this route?
Garden City is a useful midpoint, sitting about 20.1 miles from Idaho City and 20.3 miles from Boise.
How much longer is the road route than the straight-line distance?
The direct path is about 23.7 miles (38.1 km), while the road route adds roughly 16.8 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 8:00 AM to 10:00 AM MST. If you want a more comfortable same-day return, try to leave by 4:24 PM MST.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $6.40 one way or $12.80 round trip. Estimated CO2 is about 12.7 kg one way.
What should you check before leaving?
Before you leave, expect Areas Of Fog then Sunny around Idaho City and Sunny near Boise.
Stop Ideas Near Garden City
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 Garden City.
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Flight Path Map
This map shows the direct air route between Idaho City and Boise. Straight-line distance: 23.66 mi (38.08 km).
#1 Idaho City
City in Boise County, Idaho
| Population | 467 |
| Coordinates | 43.8285000, -115.8345500 |
| Altitude | 1191 |
| Country | United States |
#2 Boise
The capital of Idaho.
| Population | 228,959 |
| Coordinates | 43.6135000, -116.2034500 |
| Altitude | 823 |
| Country | United States |
End: Boise (-116.20345, 43.6135)
Estimated Travel Time
Distance: 65 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 01h 20m |
| 40 mph (64.37 km/h) | 01h 00m |
| 50 mph (80.47 km/h) | 00h 48m |
| 60 mph (96.56 km/h) | 00h 40m |
| 70 mph (112.65 km/h) | 00h 34m |
| 80 mph (129 km/h) | 00h 30m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.48 | $6.40 | $12.80 |
| Mid-grade | $4.80 | $6.86 | $13.73 |
| Premium | $5.08 | $7.26 | $14.53 |
| Diesel | $6.50 | $9.30 | $18.59 |
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 · Nov 05, 2026