Kalaoa to Fern Acres is 85.8 miles and takes about 2h 6m via Daniel K. Inouye Highway, Mamalahoa Highway, and Volcano Road, with a fuel budget near $19 and enough daylight to finish in a day. This trip takes you across the island of Hawaii, moving from one region to another. Expect a drive that is mostly on surface roads, offering a good look at the local landscape. It's a straightforward, single-day trip that doesn't require an overnight stay, making it convenient for a quick transit between locations.
Trip Pace
Same-day drive is realistic
A same-day return is realistic if you keep stops short.
Midpoint
42.9 miles from Kalaoa, HI
A natural place for your longest stop of the day
, about 1h into the drive
.
Main Roads
Road
Distance
Duration
Daniel K. Inouye Highway
45.4 mi
59m
Mamalahoa Highway
22.7 mi
33m
Volcano Road
5.7 mi
8m
Puainako Street
4.4 mi
6m
Hibiscus Street
2 mi
6m
Kanoelehua Avenue
1.9 mi
2m
West Puainako Street
1.6 mi
3m
South Kulani Road
1 mi
2m
Longest stretch:
Daniel K. Inouye Highway
— 45.4 mi, about 59m
Turn-by-Turn Driving Directions
Step-by-step road directions between Kalaoa, HI and Fern Acres, HI.
1
Start on Mahilani Drive
0.2 mi·54 sec·Mahilani Drive
2
At end of road, turn left onto 190
19 mi·27 min·Mamalahoa Highway
3
Turn slight right
262 ft·6 sec
Use the right lane.
4
Turn straight onto 200
45 mi·59 min·Daniel K. Inouye Highway
Use the straight lane.
5
Continue on 200
4.4 mi·6 min·Puainako Street
Use the straight lane.
6
At end of road, turn right onto 2000
223 ft·11 sec·Komohana Street
Use the right lane.
7
Turn left onto 2000
1.6 mi·3 min·West Puainako Street
Use the left lane.
8
Turn right onto Kanoelehua Avenue
1.9 mi·2 min·Kanoelehua Avenue
9
Continue on 11
4.0 mi·5 min·Mamalahoa Highway
Use the straight lane.
10
Continue on HI 11
5.7 mi·8 min·Volcano Road
Use the straight lane.
11
Turn left onto South Kulani Road
1.0 mi·2 min·South Kulani Road
12
Continue on Puhala Street
0.9 mi·2 min·Puhala Street
13
Turn left onto Hibiscus Street
2.0 mi·6 min·Hibiscus Street
14
Arrive at destination
Hibiscus Street
Trip Plan
Given the 2h 6m duration, you can easily complete this drive in a single day. Leaving in the morning provides ample daylight and allows for flexibility if you decide to make an unplanned stop. The fuel cost is estimated at $19, so ensure your tank is adequately filled before departing, especially since this route stays on surface roads. Keep an eye on your surroundings; the longest stretch on Daniel K. Inouye Highway is over 45 miles, so it’s a good idea to have snacks and drinks readily available for that segment.
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 42.9 miles from Kalaoa, HI, or about 1h into the drive.
The longest continuous stretch on this route runs about 45.4 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 19 miles or 29m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 42.9 miles or 1h in
This is the best place for your longest stop, a real meal, and a full fuel check.
Final approach
Final hour starts around 1h 42m
Traffic, exits, and arrival timing usually matter more near Fern Acres, HI than in the middle of the route.
Before You Leave
+
Open the route before leaving Kalaoa, 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 Kalaoa, HI
This is one driving day of about 85.8 miles and 2h 6m.
Your first comfortable stop window is around 19 miles from Kalaoa, HI.
This route can stay practical as a one-day drive if traffic stays reasonable.
The longest stretch is on Daniel K. Inouye Highway for about 45.4 miles.
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
Place data sourced from public business listings. Hours and availability may vary.
Heads-up: tricky spots
5 of 7
5 decision points cluster between mile 0.2 and 81.9 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
5
0.2 mi into trip|~0m in|190 / Mamalahoa Highway
At end of road, turn left onto 190 / Mamalahoa Highway
Navigation decision point
3
18.8 mi into trip|~28m in
Turn slight right
Lane positioning matters here
Use the right lane.
6
68.7 mi into trip|~1h 34m in|2000 / Komohana Street
At end of road, turn right onto 2000 / Komohana Street
Lane positioning matters here
Use the right lane.
6
68.7 mi into trip|~1h 35m in|2000 / West Puainako Street
Turn left onto 2000 / West Puainako Street
Lane positioning matters here
Use the left lane.
4
81.9 mi into trip|~1h 55m in|South Kulani Road
Turn left onto South Kulani Road
Navigation decision point
Fuel & Cost
Regular Gas
$19.02 one way
$38.05 round trip
$5.63/gal25.4 MPG avg30 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$5.95
$20.11
$40.22
premium
$6.10
$20.61
$41.22
diesel
$5.35
$18.07
$36.14
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$19
Meals
$25–$50
Total
$44–$69
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 30 kg one way.
Prices: EIA weekly data, 2026-06-01.
Driving Electric?
About $9 in charging
· 0 stops
· 67% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
25.7
0
$9.01
$4.12
Efficient EV
21.5
0
$7.51
$3.43
EV Truck/SUV
34.3
0
$12.01
$5.49
Gas CO2
30 kg
EV CO2
10 kg (67% 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 as of Jun 1, 2026
Origin
Kalaoa, HI
Afternoon
in Kalaoa on Wednesday
Local time
12:56 PM
HST
Current temp
61°F
Partly Cloudy
S 2 to 8 mph11% chanceLive forecast
Special Weather Statement
Special Weather Statement issued May 31 at 2:55PM HST by NWS Honolulu HI
Destination
Fern Acres, HI
Afternoon
in Fern Acres on Wednesday
Local time
12:56 PM
HST
Current temp
65°F
Occasional Rain Showers
ENE 7 to 15 mph96% chanceLive forecast
Special Weather Statement
Special Weather Statement issued May 31 at 2:55PM HST by NWS Honolulu HI
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.
Temperature spread
4 degrees warmer at arrival
A meaningful temperature swing is a good cue to rethink layers, water, and how soon you want to arrive.
Road read
2h 6m on the road
The weather snapshot is not static. If you are leaving later, give both cities one more quick forecast check before departure.
Weather data from the National Weather Service. Conditions may change; check closer to your travel date.
National Parks Near This Route
Worth a detour if your schedule allows.
Kaloko-Honokōhau National Historical Park
National Historical Park
Along the western coastline of the Island of Hawaiʻi lies the hot, rugged lava of Kaloko-Honokōhau. This seemingly barren and harsh landscape does not appear to be suitable for human existence, and ye...
Imagine you had just broken the sacred laws, the kapu, and the only punishment was death. Your only chance of survival is to elude your pursuers and reach the Puʻuhonua, a place of refuge. The Puʻuhon...
Hawai‘i Volcanoes National Park protects some of the most unique geological, biological, and cherished cultural landscapes in the world. Extending from sea level to 13,680 feet, the park encompasses t...
24 mi from route
~61 min detour
$30
near mile 44.4
Park data from the National Park Service API. Alerts update every 2 hours.
More Details
What kind of drive is this?
This drive covers 85.8 miles, with no portion on highways, meaning you'll primarily be on surface roads for the entire trip. The longest continuous stretch without a turn is 45.4 miles on Daniel K. Inouye Highway. You'll notice the transition from more developed areas to a more rural cruising experience as you progress. The route is predominantly on surface roads, indicating a steady pace without the rapid acceleration and deceleration often found on high-speed freeways.
Only 0% highway — the rest is turn-by-turn surface driving.
14 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 45.4 mi on Daniel K. Inouye Highway.
How Hard Is This Drive?
3/10
Expect a hands-on drive with frequent turns and local roads rather than long highway stretches. There are only a few real navigation decisions along the way. The trickiest moment comes around 0.2 miles in near 190 / Mamalahoa Highway.
Driving Effort3/10
Easy - simple navigation with a manageable amount of wheel time
Balances navigation complexity with total wheel time.
This is a straightforward 2h 6m drive. You will face about 7 decision points, but nothing that requires special attention if you follow navigation.
Where does it get tricky?
The main spots that need attention: at 0.2 miles (190 / Mamalahoa Highway): Navigation decision point; at 18.8 miles: Lane positioning matters here; at 68.7 miles (2000 / Komohana Street): Lane positioning matters here.
Elevation Profile
High-altitude sections with notable climbs
6,606 ft281 ft
Total Climb
6,267 ft
Total Descent
6,325 ft
Highest Point
6,606 ft
~36.8 mi in
Elevation Range
6,325 ft
Notable High Points
6,606 ft at ~36.8 miles+100 ft prominence
Detours Along the Way
Tagged by where each one fits in your drive — first break, midpoint, final stretch.
Mostly surface roads route profile with national parks nearby.
Frequently Asked Questions
The longest stretch is about 45.4 miles on Daniel K. Inouye Highway. The full list of main roads is in the Roads section above.
Yes, with realistic expectations. Build in a stop roughly every 2 hours, have snacks and activities ready, and check the Nearby Places tabs for kid-friendly stops along the way.
The main spots that need attention: at 0.2 miles (190 / Mamalahoa Highway): Navigation decision point; at 18.8 miles: Lane positioning matters here; at 68.7 miles (2000 / Komohana Street): Lane positioning matters here.
Yes — Kaloko-Honokōhau National Historical Park, Puʻuhonua o Hōnaunau National Historical Park and Hawaiʻi Volcanoes National Park. See the National Parks section for detour distances and tips on detours.
Yes. A round trip is manageable in a single day if you plan a break at Fern Acres, HI before heading back.
