How far is Long Island, ME from South Portland, ME?
The driving distance from Long Island, ME to South Portland, ME is about 9.4 miles (15.1 km), with a travel time of about 04h 44m by car.
- The straight-line flight distance is about 4.6 miles (7.4 km).
- For a round trip, plan for roughly 09h 29m 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 04h 44m.
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.
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 Long Island and South Portland.
Turn-by-Turn Driving Directions
Step-by-step road directions between Long Island and South Portland.
-
1
Start on Parson Lane
14 m · 5 sec · Parson Lane
-
2
Turn right onto Island Avenue
2131 ft · 2 min · Island Avenue
-
3
Turn left onto Ponce Landing
105 m · 15 sec · Ponce Landing
-
4
Turn slight left onto Diamond Cove - Long Island
2.8 mi · 28 min · Diamond Cove - Long Island
-
5
Turn left onto Little Diamond - Great Diamond
1.4 km · 7 min · Little Diamond - Great Diamond
-
6
Turn left onto Portland - Little Diamond
2.1 mi · 15 min · Portland - Little Diamond
-
7
Continue straight
57 m · 14 sec
-
8
Turn right onto Maine State Pier
23 m · 31 sec · Maine State Pier
-
9
Continue on Maine State Pier
656 ft · 34 sec · Maine State Pier
-
10
Turn left onto Commercial Street
1.1 km · 1 min · Commercial Street
-
11
Turn right onto High Street
77 m · 13 sec · High Street
-
12
Turn left onto York Street
860 ft · 18 sec · York Street
-
13
Turn left onto Casco Bay Bridge
1.1 mi · 2 min · Casco Bay Bridge
-
14
Continue on Broadway
1.6 km · 2 min · Broadway
-
15
Turn sharp right onto Pine Street
18 m · 3 sec · Pine Street
-
16
Arrive at your destination
0 m · 1 sec · Pine Street
Car Route Details
A richer read on the saved driving route between Long Island and South Portland.
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.
Diamond Cove - Long Island
Turn slight left onto Diamond Cove - Long Island
2.81 mi · 00h 28m
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.
Partly Sunny leaving Long Island and Partly Sunny near South Portland.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Long Island to South Portland?
The road trip is about 9.4 miles (15.1 km) and usually takes 04h 44m 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?
Portland is a useful midpoint, sitting about 4.7 miles from Long Island and 4.7 miles from South Portland.
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 4.8 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 7:30 AM 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 Long Island and Partly Sunny near South Portland.
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 Long Island and South Portland. Straight-line distance: 4.57 mi (7.35 km).
#1 Long Island
Town in Maine, United States
| Population | 239 |
| Coordinates | 43.6842500, -70.1711600 |
| Altitude | 18 |
| 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: 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 07m |
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.