How far is Kapa‘a, HI from Kapaau, HI?
The estimated driving distance from Kapa‘a, HI to Kapaau, HI is about 306.6 miles (493.5 km), with a travel time of about 05h 22m by car.
- This page is using an estimated road distance while the full route geometry is refreshed.
- The straight-line flight distance is about 259.9 miles (418.2 km).
- For a round trip, plan for roughly 10h 45m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 6:00 AM to 8:00 AM HST.
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 05h 22m.
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.
Census-designated place in Honolulu County, Hawaii, United States of America
Route Weather Snapshot
Check the forecast at both ends before you head out.
Scattered Rain Showers
Cloudy then Scattered Rain Showers
Driving Route Map
Road route is being refreshed. This page currently uses an estimated driving distance.
Turn-by-Turn Driving Directions
Step-by-step road directions between Kapa‘a and Kapaau.
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.
Scattered Rain Showers leaving Kapa‘a and Cloudy then Scattered Rain Showers near Kapaau.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Kapa‘a to Kapaau?
The road trip is about 306.6 miles (493.5 km) and usually takes 05h 22m 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?
East Honolulu is a useful midpoint, sitting about 129.9 miles from Kapa‘a and 176.7 miles from Kapaau.
How much longer is the road route than the straight-line distance?
The direct path is about 259.9 miles (418.2 km), while the road route adds roughly 46.7 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 HST. If you want a more comfortable same-day return, try to leave by 6:14 AM HST.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $53.57 one way or $107.14 round trip. Estimated CO2 is about 96.2 kg one way.
What should you check before leaving?
Before you leave, expect Scattered Rain Showers around Kapa‘a and Cloudy then Scattered Rain Showers near Kapaau.
Flight Path Map
This map shows the direct air route between Kapa‘a and Kapaau. Straight-line distance: 259.88 mi (418.23 km).
#1 Kapa‘a
Unincorporated census-designated place (CDP) in Kauaʻi County, Hawaiʻi, United States
| Population | 10,699 |
| Coordinates | 22.0752100, -159.3189500 |
| Altitude | 6 |
| Country | United States |
#2 Kapaau
City in Hawaii County, Hawaii, United States of America
| Population | 1,734 |
| Coordinates | 20.2338900, -155.8019400 |
| Altitude | 124 |
| Country | United States |
End: Kapaau (-155.80194, 20.23389)
Estimated Travel Time
Distance: 494 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 10h 13m |
| 40 mph (64.37 km/h) | 07h 40m |
| 50 mph (80.47 km/h) | 06h 07m |
| 60 mph (96.56 km/h) | 05h 06m |
| 70 mph (112.65 km/h) | 04h 22m |
| 80 mph (129 km/h) | 03h 49m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.95 | $53.57 | $107.14 |
| Mid-grade | $5.34 | $57.76 | $115.51 |
| Premium | $5.57 | $60.22 | $120.45 |
| Diesel | $6.37 | $68.88 | $137.76 |
Assumes 8.3 L/100 km (about 28.3 MPG). CO2 is an estimate and varies by vehicle, fuel blend, traffic, and terrain.
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