How far is Houlton, ME from South Portland, ME?
The driving distance from Houlton, ME to South Portland, ME is about 250.5 miles (403.1 km), with a travel time of about 03h 50m by car.
- The straight-line flight distance is about 208 miles (334.8 km).
- For a round trip, plan for roughly 07h 40m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 6:00 AM to 8:00 AM EDT.
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 03h 50m.
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.
Town in Maine
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Cloudy
Light Rain
Driving Route Map
The map below follows the saved road route between Houlton and South Portland.
Turn-by-Turn Driving Directions
Step-by-step road directions between Houlton and South Portland.
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1
Start on the route
41 m · 12 sec
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2
Turn right onto Market Square
68 m · 7 sec · Market Square
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3
Turn right onto North Street
1.1 mi · 2 min · North Street
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4
Turn left
1631 ft · 40 sec
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5
Merge slight left
198.2 mi · 3 hr 27 min
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6
Keep slight right to continue on I 295 South, ME 9, ME 126: Gardiner, Brunswick
46.5 mi · 53 min
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7
Take the exit slight right toward US 1A
2130 ft · 1 min
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8
Turn right onto Marginal Way
2795 ft · 1 min · Marginal Way
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9
Continue on State Street
1.6 km · 2 min · State Street
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10
Continue on Casco Bay Bridge
1.1 mi · 2 min · Casco Bay Bridge
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11
Continue on Broadway
1.6 km · 2 min · Broadway
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12
Turn sharp right onto Pine Street
18 m · 3 sec · Pine Street
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13
Arrive at your destination
0 m · 1 sec · Pine Street
Car Route Details
A richer read on the saved driving route between Houlton and South Portland.
Straightforward drive
The saved road route has a manageable number of maneuvers and should be easy to follow with normal attention to signs.
North Street
Merge slight left
198 mi · 03h 27m
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.
Mostly Cloudy leaving Houlton and Light Rain near South Portland.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Houlton to South Portland?
The road trip is about 250.5 miles (403.1 km) and usually takes 03h 50m 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?
Hermon is a useful midpoint, sitting about 125 miles from Houlton and 125.5 miles from South Portland.
How much longer is the road route than the straight-line distance?
The direct path is about 208 miles (334.8 km), while the road route adds roughly 42.5 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 EDT. If you want a more comfortable same-day return, try to leave by 9:20 AM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $34.87 one way or $69.75 round trip. Estimated CO2 is about 78.6 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Cloudy around Houlton and Light Rain near South Portland.
Stop Ideas Near Hermon
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 Hermon.
Bangor, Maine
Orono (University of Maine), Maine
Searsport, Maine
Belfast, Maine
Flight Path Map
This map shows the direct air route between Houlton and South Portland. Straight-line distance: 208.02 mi (334.78 km).
#1 Houlton
Town in Maine, USA
| Population | 5,766 |
| Coordinates | 46.1261600, -67.8403000 |
| Altitude | 110 |
| Country | United States |
#2 South Portland
City in Cumberland County, Maine, USA
| Population | 25,950 |
| Coordinates | 43.6414700, -70.2408800 |
| Altitude | 7 |
| Country | United States |
End: Pine Street (-70.240981, 43.641461)
Estimated Travel Time
Distance: 403 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 08h 20m |
| 40 mph (64.37 km/h) | 06h 15m |
| 50 mph (80.47 km/h) | 05h 00m |
| 60 mph (96.56 km/h) | 04h 10m |
| 70 mph (112.65 km/h) | 03h 34m |
| 80 mph (129 km/h) | 03h 07m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.95 | $34.87 | $69.75 |
| Mid-grade | $4.46 | $39.40 | $78.80 |
| Premium | $4.86 | $42.94 | $85.89 |
| Diesel | $6.00 | $53.01 | $106.03 |
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 Maine · May 30, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.