How far is South Portland, ME from Long Island, ME?
The driving distance from South Portland, ME to Long Island, ME is about 9.3 miles (15 km), with a travel time of about 00h 58m by car.
- The straight-line flight distance is about 4.6 miles (7.4 km).
- For a round trip, plan for roughly 01h 56m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 8:00 AM to 10:00 AM EDT.
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 00h 58m.
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.
The most populous city in Cumberland County, Maine.
Route Weather Snapshot
Check the forecast at both ends before you head out.
Partly Sunny
Partly Sunny
Driving Route Map
The map below follows the saved road route between South Portland and Long Island.
Turn-by-Turn Driving Directions
Step-by-step road directions between South Portland and Long Island.
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1
Start on Pine Street
18 m · 10 sec · Pine Street
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2
Turn sharp left onto Broadway
1.6 km · 2 min · Broadway
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3
Continue on Casco Bay Bridge
1.1 mi · 2 min · Casco Bay Bridge
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4
Turn straight onto York Street
118 m · 8 sec · York Street
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5
Turn right onto Park Street
85 m · 13 sec · Park Street
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6
Turn left onto Commercial Street
1.2 km · 1 min · Commercial Street
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7
Turn right onto Maine State Pier
668 ft · 29 sec · Maine State Pier
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8
Turn slight right
57 m · 14 sec
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9
Turn straight onto Portland - Little Diamond
2.1 mi · 15 min · Portland - Little Diamond
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10
Turn right onto Little Diamond - Great Diamond
1.4 km · 7 min · Little Diamond - Great Diamond
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11
Turn right onto Great Diamond - Diamond Cove
2.8 mi · 28 min · Great Diamond - Diamond Cove
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12
Continue on Ponce Landing
105 m · 19 sec · Ponce Landing
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13
Turn right onto Island Avenue
2131 ft · 2 min · Island Avenue
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14
Turn left onto Parson Lane
14 m · 2 sec · Parson Lane
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15
Arrive at your destination
0 m · 1 sec · Parson Lane
Car Route Details
A richer read on the saved driving route between South Portland and Long Island.
Turn-heavy local drive
The route has frequent decision points for its length, so lane choice and turn timing will matter more than cruising speed.
Great Diamond - Diamond Cove
Turn right onto Great Diamond - Diamond Cove
2.81 mi · 00h 28m
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.
Partly Sunny leaving South Portland and Partly Sunny near Long Island.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from South Portland to Long Island?
The road trip is about 9.3 miles (15 km) and usually takes 00h 58m 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?
Portland is a useful midpoint, sitting about 4.7 miles from South Portland and 4.7 miles from Long Island.
How much longer is the road route than the straight-line distance?
The direct path is about 4.6 miles (7.4 km), while the road route adds roughly 4.7 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 8:00 AM to 10:00 AM EDT. If you want a more comfortable same-day return, try to leave by 4:34 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $1.30 one way or $2.60 round trip. Estimated CO2 is about 2.9 kg one way.
What should you check before leaving?
Before you leave, expect Partly Sunny around South Portland and Partly Sunny near Long Island.
Stop Ideas Near Portland
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 Portland.
Portland Transportation Center
Old Orchard Beach
Saco Transportation Center
Freeport
Flight Path Map
This map shows the direct air route between South Portland and Long Island. Straight-line distance: 4.57 mi (7.35 km).
#1 South Portland
City in Cumberland County, Maine, USA
| Population | 25,950 |
| Coordinates | 43.6414700, -70.2408800 |
| Altitude | 7 |
| Country | United States |
#2 Long Island
Town in Maine, United States
| Population | 239 |
| Coordinates | 43.6842500, -70.1711600 |
| Altitude | 18 |
| Country | United States |
End: Long Island (-70.17116, 43.68425)
Estimated Travel Time
Distance: 15 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 00h 18m |
| 40 mph (64.37 km/h) | 00h 14m |
| 50 mph (80.47 km/h) | 00h 11m |
| 60 mph (96.56 km/h) | 00h 09m |
| 70 mph (112.65 km/h) | 00h 08m |
| 80 mph (129 km/h) | 00h 06m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.95 | $1.30 | $2.60 |
| Mid-grade | $4.46 | $1.47 | $2.94 |
| Premium | $4.86 | $1.60 | $3.21 |
| Diesel | $6.00 | $1.98 | $3.96 |
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 · Apr 26, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.