How far is Boise, ID from New Plymouth, ID?
The driving distance from Boise, ID to New Plymouth, ID is about 49.4 miles (79.5 km), with a travel time of about 00h 57m by car.
- The straight-line flight distance is about 39.3 miles (63.3 km).
- For a round trip, plan for roughly 01h 54m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 8:00 AM to 10:00 AM MDT.
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 00h 57m.
A morning start gives you useful time at the destination and keeps the return out of the late evening.
This departure sits inside the recommended comfort window for the route.
Halfway Point
A useful midpoint for breaks, coffee, or meeting in the middle.
The most populous city in Canyon County, Idaho.
Route Weather Snapshot
Check the forecast at both ends before you head out.
Partly Sunny
Driving Route Map
The map below follows the saved road route between Boise and New Plymouth.
Turn-by-Turn Driving Directions
Step-by-step road directions between Boise and New Plymouth.
-
1
Start on the route
36 m · 11 sec
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2
Turn right
80 m · 21 sec
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3
Turn right onto South 6th Street
57 m · 11 sec · South 6th Street
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4
Turn right onto West Front Street
2663 ft · 1 min · West Front Street
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5
Continue on Boise Connector
4.8 mi · 6 min · Boise Connector
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6
Merge slight left onto Vietnam Veterans Memorial Highway
39.3 mi · 42 min · Vietnam Veterans Memorial Highway
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7
Take the exit slight right toward US 30: New Plymouth
1026 ft · 18 sec
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8
Turn right
4.5 mi · 7 min
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9
Arrive at your destination
0 m · 1 sec · South East Avenue
Car Route Details
A richer read on the saved driving route between Boise and New Plymouth.
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
Merge slight left onto Vietnam Veterans Memorial Highway
39.3 mi · 00h 42m
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.
Partly Sunny leaving Boise and Partly Sunny near New Plymouth.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Boise to New Plymouth?
The road trip is about 49.4 miles (79.5 km) and usually takes 00h 57m 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?
Caldwell is a useful midpoint, sitting about 24.7 miles from Boise and 24.7 miles from New Plymouth.
How much longer is the road route than the straight-line distance?
The direct path is about 39.3 miles (63.3 km), while the road route adds roughly 10.1 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 MDT. If you want a more comfortable same-day return, try to leave by 4:36 PM MDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $7.32 one way or $14.64 round trip. Estimated CO2 is about 16.7 kg one way.
What should you check before leaving?
Before you leave, expect Partly Sunny around Boise and Partly Sunny near New Plymouth.
Stop Ideas Near Caldwell
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 Caldwell.
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Flight Path Map
This map shows the direct air route between Boise and New Plymouth. Straight-line distance: 39.36 mi (63.34 km).
#1 Boise
The capital of Idaho.
| Population | 228,959 |
| Coordinates | 43.6135000, -116.2034500 |
| Altitude | 823 |
| Country | United States |
#2 New Plymouth
City in Payette County, Idaho, United States
| Population | 1,554 |
| Coordinates | 43.9698900, -116.8190400 |
| Altitude | 689 |
| Country | United States |
End: New Plymouth (-116.81904, 43.96989)
Estimated Travel Time
Distance: 80 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 01h 38m |
| 40 mph (64.37 km/h) | 01h 14m |
| 50 mph (80.47 km/h) | 00h 59m |
| 60 mph (96.56 km/h) | 00h 49m |
| 70 mph (112.65 km/h) | 00h 42m |
| 80 mph (129 km/h) | 00h 36m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.89 | $7.32 | $14.64 |
| Mid-grade | $4.23 | $7.95 | $15.91 |
| Premium | $4.55 | $8.55 | $17.10 |
| Diesel | $5.41 | $10.17 | $20.35 |
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 · Apr 19, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.