How far is Koloa, HI from Waianae, HI?
The estimated driving distance from Koloa, HI to Waianae, HI is about 110.8 miles (178.3 km), with a travel time of about 02h 18m by car.
- This page is using an estimated road distance while the full route geometry is refreshed.
- The straight-line flight distance is about 88.6 miles (142.6 km).
- For a round trip, plan for roughly 04h 36m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 8:00 AM to 10:00 AM HST.
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 02h 18m.
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 Kauai County, Hawaii, United States of America
Route Weather Snapshot
Check the forecast at both ends before you head out.
Isolated Rain Showers
Sunny
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 Koloa and Waianae.
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.
Isolated Rain Showers leaving Koloa and Sunny near Waianae.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Koloa to Waianae?
The road trip is about 110.8 miles (178.3 km) and usually takes 02h 18m 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?
Hanamā‘ulu is a useful midpoint, sitting about 44.3 miles from Koloa and 66.5 miles from Waianae.
How much longer is the road route than the straight-line distance?
The direct path is about 88.6 miles (142.6 km), while the road route adds roughly 22.2 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 HST. If you want a more comfortable same-day return, try to leave by 1:54 PM HST.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $19.36 one way or $38.72 round trip. Estimated CO2 is about 34.7 kg one way.
What should you check before leaving?
Before you leave, expect Isolated Rain Showers around Koloa and Sunny near Waianae.
Flight Path Map
This map shows the direct air route between Koloa and Waianae. Straight-line distance: 88.61 mi (142.6 km).
#1 Koloa
City in Kauai County, Hawaii, United States of America
| Population | 2,144 |
| Coordinates | 21.9069000, -159.4699400 |
| Altitude | 60 |
| Country | United States |
#2 Waianae
Census designated place in Honolulu County, Hawaii, United States
| Population | 13,177 |
| Coordinates | 21.4378500, -158.1855500 |
| Altitude | 5 |
| Country | United States |
End: Waianae (-158.18555, 21.43785)
Estimated Travel Time
Distance: 178 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 03h 41m |
| 40 mph (64.37 km/h) | 02h 46m |
| 50 mph (80.47 km/h) | 02h 12m |
| 60 mph (96.56 km/h) | 01h 50m |
| 70 mph (112.65 km/h) | 01h 34m |
| 80 mph (129 km/h) | 01h 22m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.95 | $19.36 | $38.72 |
| Mid-grade | $5.34 | $20.87 | $41.74 |
| Premium | $5.57 | $21.76 | $43.53 |
| Diesel | $6.37 | $24.89 | $49.78 |
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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