How far is South Thomaston, ME from City of Portland, ME?
The driving distance from South Thomaston, ME to City of Portland, ME is about 82.1 miles (132.1 km), with a travel time of about 05h 40m by car.
- The straight-line flight distance is about 58.9 miles (94.8 km).
- For a round trip, plan for roughly 11h 21m 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 05h 40m.
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 of the United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Patchy Fog
Rain Showers
Driving Route Map
The map below follows the saved road route between South Thomaston and City of Portland.
Turn-by-Turn Driving Directions
Step-by-step road directions between South Thomaston and City of Portland.
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1
Start on Spruce Head Road
8 m · 1 sec · Spruce Head Road
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2
Turn right onto Westbrook Street
1.9 mi · 8 min · Westbrook Street
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3
At the end of the road, turn right onto Saint George Road
1.2 mi · 2 min · Saint George Road
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4
Continue on High Street
2593 ft · 58 sec · High Street
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5
At the end of the road, turn left onto Main Street
1.8 mi · 2 min · Main Street
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6
Continue on Atlantic Highway
13.4 mi · 18 min · Atlantic Highway
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7
Continue on Route 1
5.4 mi · 8 min · Route 1
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8
Continue on Route 1
8.7 mi · 12 min · Route 1
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9
Continue on Main Street
2605 ft · 1 min · Main Street
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10
Turn straight onto Bath Road
4 mi · 8 min · Bath Road
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11
Continue on Route 1
4.9 mi · 7 min · Route 1
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12
Continue on Main Street
1 mi · 2 min · Main Street
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13
Continue on Leeman Highway
9.2 mi · 13 min · Leeman Highway
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14
Turn right onto Pleasant Street
1.4 mi · 3 min · Pleasant Street
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15
Keep slight right
2443 ft · 42 sec
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16
Keep slight left to continue on I 295 South: Freeport, Portland
1.6 mi · 2 min
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17
Merge slight left
21.1 mi · 25 min
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18
Take the exit slight right toward US 1A
1.1 mi · 3 min
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19
Continue on Maine State Pier
668 ft · 29 sec · Maine State Pier
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20
Turn slight right
57 m · 14 sec
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21
Turn straight onto Portland - Peaks Island
2.5 mi · 20 min · Portland - Peaks Island
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22
Continue straight
65 m · 16 sec
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23
Continue on Welch Street
1078 ft · 50 sec · Welch Street
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24
Turn right onto Oakland Avenue
594 ft · 26 sec · Oakland Avenue
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25
Turn slight left onto Whitehead Street
107 m · 15 sec · Whitehead Street
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26
Continue on Seashore Avenue
1046 ft · 46 sec · Seashore Avenue
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27
Continue on Seashore Avenue
3044 ft · 2 min · Seashore Avenue
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28
Arrive at your destination
0 m · 1 sec · Seashore Avenue
Car Route Details
A richer read on the saved driving route between South Thomaston and City of Portland.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
I 295 South
Merge slight left
21.1 mi · 00h 25m
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.
Patchy Fog leaving South Thomaston and Rain Showers near City of Portland.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from South Thomaston to City of Portland?
The road trip is about 82.1 miles (132.1 km) and usually takes 05h 40m 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?
Woolwich is a useful midpoint, sitting about 41 miles from South Thomaston and 41.1 miles from City of Portland.
How much longer is the road route than the straight-line distance?
The direct path is about 58.9 miles (94.8 km), while the road route adds roughly 23.2 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 5:38 AM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $11.44 one way or $22.88 round trip. Estimated CO2 is about 25.8 kg one way.
What should you check before leaving?
Before you leave, expect Patchy Fog around South Thomaston and Rain Showers near City of Portland.
Stop Ideas Near Woolwich
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 Woolwich.
Bath, Maine
Brunswick Maine Street Station
Wiscasset, Maine
Damariscotta, Maine
Flight Path Map
This map shows the direct air route between South Thomaston and City of Portland. Straight-line distance: 58.89 mi (94.78 km).
#1 South Thomaston
City in Knox County, Maine, United States of America
| Population | 1,642 |
| Coordinates | 44.0514700, -69.1278200 |
| Altitude | 9 |
| Country | United States |
#2 City of Portland
The twenty-eighth most populous city in the United States and the center of the Portland metropolitan area.
| Population | 653,115 |
| Coordinates | 43.6470800, -70.1682300 |
| Altitude | 36 |
| Country | United States |
End: Seashore Avenue (-70.181795, 43.65347)
Estimated Travel Time
Distance: 132 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 02h 44m |
| 40 mph (64.37 km/h) | 02h 03m |
| 50 mph (80.47 km/h) | 01h 38m |
| 60 mph (96.56 km/h) | 01h 22m |
| 70 mph (112.65 km/h) | 01h 10m |
| 80 mph (129 km/h) | 01h 01m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.95 | $11.44 | $22.88 |
| Mid-grade | $4.46 | $12.93 | $25.85 |
| Premium | $4.86 | $14.09 | $28.18 |
| Diesel | $6.00 | $17.39 | $34.78 |
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 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.