How far is South Portland, ME from Dedham, ME?
The driving distance from South Portland, ME to Dedham, ME is about 143.3 miles (230.6 km), with a travel time of about 02h 47m by car.
- The straight-line flight distance is about 106.7 miles (171.7 km).
- For a round trip, plan for roughly 05h 35m 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 02h 47m.
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.
Town in Kennebec County in the U.
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Sunny
Mostly Sunny
Driving Route Map
The map below follows the saved road route between South Portland and Dedham.
Turn-by-Turn Driving Directions
Step-by-step road directions between South Portland and Dedham.
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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
785 ft · 19 sec · York Street
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5
Turn left onto High Street
1.4 km · 2 min · High Street
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6
Take the ramp slight right toward I 295 North, US 1 North: Falmouth
1360 ft · 33 sec
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7
Merge slight left
46.8 mi · 53 min
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8
Merge slight left onto Maine Turnpike
79.2 mi · 1 hr 26 min · Maine Turnpike
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9
Take the exit slight right toward I 395 South, ME 15 South: Bangor, Brewer
2241 ft · 48 sec
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10
Merge slight left
1.2 km · 55 sec
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11
Continue straight
3.4 mi · 4 min
-
12
Take the exit slight right toward US 1A East: Coastal Route, Ellsworth, Bar Harbor
2794 ft · 1 min
-
13
Merge slight left onto Wilson Street
1414 ft · 27 sec · Wilson Street
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14
Continue on Main Road
4.8 mi · 8 min · Main Road
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15
Turn right onto Lower Dedham Road
3.5 mi · 6 min · Lower Dedham Road
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16
Turn right onto South Road
662 ft · 29 sec · South Road
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17
Arrive at your destination
0 m · 1 sec · South Road
Car Route Details
A richer read on the saved driving route between South Portland and Dedham.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
Maine Turnpike
Merge slight left onto Maine Turnpike
79.2 mi · 01h 26m
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.
Mostly Sunny leaving South Portland and Mostly Sunny near Dedham.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from South Portland to Dedham?
The road trip is about 143.3 miles (230.6 km) and usually takes 02h 47m 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?
Oakland is a useful midpoint, sitting about 71.6 miles from South Portland and 71.7 miles from Dedham.
How much longer is the road route than the straight-line distance?
The direct path is about 106.7 miles (171.7 km), while the road route adds roughly 36.6 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 12:54 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $19.96 one way or $39.92 round trip. Estimated CO2 is about 45 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Sunny around South Portland and Mostly Sunny near Dedham.
Stop Ideas Near Oakland
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Waterville Opera House
Augusta City Hall
Inn At City Hall
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Oakland.
Augusta, ME
Waldoboro, Maine
Belfast, Maine
Damariscotta, Maine
Flight Path Map
This map shows the direct air route between South Portland and Dedham. Straight-line distance: 106.72 mi (171.75 km).
#1 South Portland
City in Cumberland County, Maine, USA
| Population | 25,950 |
| Coordinates | 43.6414700, -70.2408800 |
| Altitude | 7 |
| Country | United States |
#2 Dedham
Town in Maine
| Population | 1,666 |
| Coordinates | 44.6917400, -68.6619800 |
| Altitude | 24 |
| Country | United States |
End: Dedham (-68.66198, 44.69174)
Estimated Travel Time
Distance: 231 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 04h 46m |
| 40 mph (64.37 km/h) | 03h 34m |
| 50 mph (80.47 km/h) | 02h 51m |
| 60 mph (96.56 km/h) | 02h 23m |
| 70 mph (112.65 km/h) | 02h 02m |
| 80 mph (129 km/h) | 01h 47m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.95 | $19.96 | $39.92 |
| Mid-grade | $4.46 | $22.55 | $45.10 |
| Premium | $4.86 | $24.58 | $49.16 |
| Diesel | $6.00 | $30.34 | $60.69 |
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 05, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.