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Trip from Waianae, HI to Mililani Town, HI

Data updated 0 seconds ago

Drive Time

41m

Distance

23 mi

37 km

Drive Score

8/10

Great drive

Same Day?

Yes, doable

Fuel Cost

$5

one way

EV Charging

Loading...

station data

Best Time to Leave

Save up to 11 min
4 AM
0h 38m ★
6 AM
0h 42m
8 AM
0h 49m
10 AM
0h 44m
12 PM
0h 43m
3 PM
0h 44m
5 PM
0h 48m
8 PM
0h 40m

Estimated drive times based on typical traffic patterns. Actual times may vary with weather, construction, and real-time conditions.

census designated place in Honolulu County, Hawaii, United States

Waianae, HI

Wikimedia Commons

Downtown Mililani Town, HI, HI

Mililani Town, HI

Mike Norris

Trip Overview

Traveling from Waianae to Mililani Town covers 23 miles of Oahu’s diverse landscape, typically taking about 41 minutes behind the wheel. This short commute is perfectly suited for a single-day trip, requiring no overnight stays or complex logistics. You should budget approximately $5 for fuel, making this an economical excursion between the western coast and the central interior of the island. Because the route transitions from the coastal environment of Waianae to the more inland, suburban setting of Mililani Town, you will experience a distinct shift in the local atmosphere. It is an efficient, straightforward drive that connects two different regions of Hawaii without unnecessary complications.

Trip Pace

Same-day drive is realistic

A same-day return is realistic if you keep stops short.

Break Rhythm

0 planned breaks

A short stop every 2 to 3 hours is enough for this drive.

Midpoint

11.5 miles from Waianae, HI

A natural place for your longest stop of the day , about 22m into the drive .

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Drive Character

This trip features a mixed driving profile that keeps the journey engaging as you navigate through different types of infrastructure. You will spend roughly 31% of your time on highways, utilizing a combination of the Farrington Highway, Queen Liliʻuokalani Freeway, and Kamehameha Highway. The longest uninterrupted portion of the trip occurs during the 10.4-mile stretch along Farrington Highway, where you can settle into a steady rhythm. As you move away from the coast, the road character shifts from local transit to more structured freeway travel, providing a varied experience for the driver. Expect a balanced transition between these faster arterial roads and the necessary local connections that bring you into the heart of Mililani Town.

Expect a mix of faster highway mileage and slower local approaches near the beginning or end.
There are about 13 navigation steps in the underlying route data, so the final approach matters more than the middle miles.
Farrington Highway is the longest continuous segment at about 10.4 miles.

How Hard Is This Drive?

This route mixes highway mileage with some local-road sections near the start or finish. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes early in the drive near HI 93 / Farrington Highway.

Route Complexity 7/10

Demanding - plan breaks and stay ahead of the key maneuvers

This is a demanding drive. With 9 significant decision points across 23 miles, you will need to stay alert — especially through interchange areas and urban stretches. Consider splitting it into segments if you are not comfortable with fast highway navigation.

Where does it get tricky?

The main spots that need attention: near the start (HI 93 / Farrington Highway): Lane positioning matters here; at 17.3 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one; at 17.5 miles: Highway fork - watch signs carefully.

Critical Maneuvers

5 of 9 key points

These are the spots where you need to pay the most attention. Preview them before you drive.

4
0 mi into trip | ~0m in | HI 93 / Farrington Highway

Depart onto HI 93 / Farrington Highway

Lane positioning matters here

Use the left lane.
8
17.3 mi into trip | ~29m in

Take the exit toward Waikele, Waipahu

Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one

Use the straight / slight right lanes. Exit 7 Toward Waikele, Waipahu
6
17.5 mi into trip | ~30m in

Keep slight left at fork toward Waikele

Highway fork - watch signs carefully

Toward Waikele
6
17.9 mi into trip | ~31m in | Lumiaina Street

Turn right onto Lumiaina Street

Lane positioning matters here

Use the right lane.
5
22.8 mi into trip | ~40m in | Puanane Loop

Turn right onto Puanane Loop

Navigation decision point

Towns Mentioned on Route Signs

Based on OSRM destination-sign hints, not a full list of every settlement the road passes.

Between Waianae, HI and Mililani Town, HI, road signs point toward Waikele and Waipahu.

Waikele

17.3 mi in | ~29m

Waipahu

17.3 mi in | ~29m

Main Roads

Road Distance Duration
Farrington Highway 10.4 mi 21m
Queen Liliʻuokalani Freeway 6.9 mi 8m
Kamehameha Highway 3.5 mi 6m
Lumiaina Street 0.8 mi 1m
Paiwa Street 0.4 mi <1m
Meheula Parkway 0.3 mi <1m
Puanane Loop 0.2 mi <1m
Luminana Street 0.1 mi <1m
Longest stretch: Farrington Highway — 10.4 mi, about 21m

Turn-by-Turn Driving Directions

Step-by-step road directions between Waianae, HI and Mililani Town, HI.

1

Start on HI 93

10 mi · 21 min · Farrington Highway
Use the left lane.
2

Continue on I H1

6.9 mi · 8 min · Queen Liliʻuokalani Freeway
Use the straight / slight right lanes.
3

Take the exit

0.2 mi · 28 sec
Exit 7 Toward Waikele, Waipahu Use the straight / slight right lanes.
4

Keep slight left at fork

119 ft · 4 sec
Toward Waikele
5

Turn left onto Paiwa Street

0.4 mi · 51 sec · Paiwa Street
Use the straight lane.
6

Turn right onto Lumiaina Street

0.8 mi · 1 min · Lumiaina Street
Use the right lane.
7

Continue on Luminana Street

0.1 mi · 14 sec · Luminana Street
8

Turn left onto HI 99

3.5 mi · 6 min · Kamehameha Highway
Use the straight lane.
9

Turn right onto Meheula Parkway

0.3 mi · 34 sec · Meheula Parkway
10

Turn right onto Anania Drive

0.1 mi · 18 sec · Anania Drive
11

Turn right onto Puanane Loop

0.2 mi · 39 sec · Puanane Loop
12

Turn right onto Mahau Place

358 ft · 15 sec · Mahau Place
13

Arrive at destination

Mahau Place

Trip Plan

Since this is a quick 41-minute drive, you have plenty of flexibility in your schedule to depart whenever it suits your plans. While the route is short enough that you won't need to plan for scheduled stops, keeping a close eye on your fuel gauge is a good habit given the $5 estimated cost. If you are sensitive to traffic, try to avoid peak commuting hours to ensure you maintain that efficient 41-minute travel time. Your biggest advantage on this 23-mile stretch is the ability to easily adjust your departure based on your personal itinerary. A pro tip for this specific route is to prepare for the transition between the coastal Farrington Highway and the inland freeway systems, as traffic patterns can change noticeably once you hit the merge points.

Morning Departure

Leave by 9 AM and you'll arrive before lunch.

Evening Departure

Even a 4 PM departure gets you there before dark in summer.

You can normally do this drive in one day.
You may only need one short stretch break if traffic stays light.
The halfway point lands around 11.5 miles from Waianae, HI, or about 22m into the drive.
The longest continuous stretch on this route runs about 10.4 miles.

This is a comfortable same-day trip.

Departure

Before you leave

Start with fuel, water, and navigation already sorted so the first hour feels easy.

First stop

Around 23 miles or 41m in

Use this first pause for coffee, a restroom break, and a quick traffic check ahead.

Halfway reset

Around 11.5 miles or 22m in

This is the best place for your longest stop, a real meal, and a full fuel check.

Final approach

Final hour starts around 34m

Traffic, exits, and arrival timing usually matter more near Mililani Town, HI than in the middle of the route.

Before You Leave

+

Open the route before leaving Waianae, HI so your first major turns are already loaded.

+

Leave with enough water and a charging cable within reach, not packed away.

+

Check your fuel range against the first long segment, especially if you are starting outside city service areas.

Day 1

Settle into the route from Waianae, HI

This is one driving day of about 23 miles and 41m.

Your first comfortable stop window is around 80 miles from Waianae, HI.
This route can stay practical as a one-day drive if traffic stays reasonable.
You may only need one short stretch stop if conditions stay smooth.
The longest stretch is on Farrington Highway for about 10.4 miles.

Where to Stop

Rest stops, refuel points, and overnight suggestions along this route.

Halfway Point

Midpoint

About 11.5 mi from Waianae, HI · 22m into the drive

Mid-route town

Meal stop

‘Ewa Beach, HI

12 mi into the route

Best for: Lunch, fuel, and a longer reset

This sits close to the middle of the route, so it works well for the longest stop of the day.

Pacing Suggestions

Wahiawā, HI

Fuel and coffee

A short stop after about 23 miles helps settle the day before fatigue starts building.

‘Ewa Beach, HI

Meal break

The midpoint is around 11.5 miles from Waianae, HI, which is a good place for a longer meal and fuel stop.

Arriving in Mililani Town, HI

The final approach into Mililani Town, HI usually feels slower than the middle of the drive, so avoid planning your tightest schedule at the very end.

Try to arrive with enough fuel left to skip an immediate station stop unless you already know the area around Mililani Town, HI.

These stop ideas are pacing suggestions — the exact town or exit can change with traffic, hotel plans, and fuel range.

Fuel & Cost

Regular Gas

$4.98 one way

$9.97 round trip

$5.51/gal 25.4 MPG avg 8 kg CO2
Fuel Type $/gal One Way Round Trip
midgrade $5.79 $5.24 $10.48
premium $5.98 $5.41 $10.83
diesel $5.61 $5.08 $10.16

No toll roads detected on this route.

Estimated Trip Cost (one way, 1 person)

Fuel

$5

Meals

$25–$50

Total

$30–$55

Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.

Estimated CO2 emission: 8 kg one way. Prices: EIA weekly data, 2026-04-13.

Driving Electric?

About $2 in charging · 0 stops · 63% less CO2

Vehicle Type kWh Stops DC Fast Home Charge
Average EV 6.9 0 $2.41 $1.10
Efficient EV 5.8 0 $2.01 $0.92
EV Truck/SUV 9.2 0 $3.22 $1.47

Gas CO2

8 kg

EV CO2

3 kg (63% less)

This trip is well within single-charge range for most EVs. No charging stops needed if you start fully charged.

DC fast charging avg $0.35/kWh. Home charging avg $0.16/kWh. US grid CO2: 0.39 kg/kWh.

Travel Intel

Current conditions at both ends of the drive.

Forecast data refreshed 5 days ago

Origin

Waianae, HI

Afternoon in Waianae on Tuesday

Local time

1:42 PM

HST

Current temp

--

Unavailable

Destination

Mililani Town, HI

Afternoon in Mililani Town on Tuesday

Local time

1:42 PM

HST

Current temp

67°F

Unavailable

Live forecast

Seasonal Notes

Summer travel usually means heavier construction, hotter rest stops, and busier weekend traffic around major cities.

Winter travel shortens daylight, so a route that looks manageable on paper can feel much longer after dark.

Holiday weekends tend to make both departure and arrival windows slower than the raw route time suggests.

Time zone

Same local time

Origin and destination are on the same clock, so arrival timing is easier to judge at a glance.

Road read

41m on the road

Use the two city cards together: check the sky where you start, then compare it with the local time and temperature at arrival.

Weather data from the National Weather Service. Conditions may change; check closer to your travel date.

Frequently Asked Questions

The drive from Waianae, HI to Mililani Town, HI covers 23 miles and takes about 41m without stops. Add 15-30 minutes for a fuel or rest stop on longer drives.
The main roads are Farrington Highway, Queen Liliʻuokalani Freeway, Kamehameha Highway. Expect a mix of highway and local road driving.
This is a comfortable same-day trip.
The midpoint is about 11.5 miles from Waianae, HI. Look for rest areas, gas stations, or food options near the halfway mark.
At current regular gas prices, expect to spend about $4.98 one way. This estimate uses 25.4 MPG — your actual cost will vary with your vehicle's fuel efficiency and current gas prices.
Leave by 9 AM and you'll arrive before lunch. Even a 4 PM departure gets you there before dark in summer.
This is a demanding drive. With 9 significant decision points across 23 miles, you will need to stay alert — especially through interchange areas and urban stretches. Consider splitting it into segments if you are not comfortable with fast highway navigation.
The main spots that need attention: near the start (HI 93 / Farrington Highway): Lane positioning matters here; at 17.3 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one; at 17.5 miles: Highway fork - watch signs carefully.
Between Waianae, HI and Mililani Town, HI, road signs point toward Waikele and Waipahu.

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