How far is City of Portland, ME from South Thomaston, ME?
The driving distance from City of Portland, ME to South Thomaston, ME is about 82 miles (132 km), with a travel time of about 02h 20m by car.
- The straight-line flight distance is about 58.9 miles (94.8 km).
- For a round trip, plan for roughly 04h 41m 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 20m.
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 of the United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Rain Showers
Patchy Fog
Driving Route Map
The map below follows the saved road route between City of Portland and South Thomaston.
Turn-by-Turn Driving Directions
Step-by-step road directions between City of Portland and South Thomaston.
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1
Start on Seashore Avenue
3044 ft · 2 min · Seashore Avenue
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2
At the end of the road, turn left onto Seashore Avenue
1046 ft · 46 sec · Seashore Avenue
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3
Continue on Whitehead Street
107 m · 15 sec · Whitehead Street
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4
Continue on Oakland Avenue
594 ft · 32 sec · Oakland Avenue
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5
At the end of the road, turn left onto Welch Street
1291 ft · 1 min · Welch Street
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6
Continue on Portland - Peaks Island
2.5 mi · 20 min · Portland - Peaks Island
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7
Continue straight
57 m · 14 sec
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8
Turn right onto Maine State Pier
23 m · 31 sec · Maine State Pier
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9
Continue on Maine State Pier
656 ft · 31 sec · Maine State Pier
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10
Continue on Franklin Street
1.2 km · 1 min · Franklin Street
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11
Take the ramp slight right
1614 ft · 39 sec
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12
Merge slight left
22 mi · 26 min
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13
Take the exit slight right toward US 1: Brunswick, Bath, Coastal Route
1.3 mi · 2 min
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14
Continue on Pleasant Street
1.2 mi · 3 min · Pleasant Street
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15
Turn left onto Mill Street
9.2 mi · 13 min · Mill Street
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16
Continue on Main Street
1 mi · 2 min · Main Street
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17
Continue on Route 1
4.9 mi · 7 min · Route 1
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18
Continue on Bath Road
4 mi · 8 min · Bath Road
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19
Continue on Main Street
2605 ft · 1 min · Main Street
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20
Continue on Route 1
8.7 mi · 12 min · Route 1
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21
Keep slight right to continue on Route 1
5.4 mi · 8 min · Route 1
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22
Continue on Atlantic Highway
13.4 mi · 18 min · Atlantic Highway
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23
Continue on Main Street
1.8 mi · 2 min · Main Street
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24
Turn right onto High Street
2593 ft · 52 sec · High Street
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25
Continue on Saint George Road
1.2 mi · 2 min · Saint George Road
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26
Turn left onto Westbrook Street
1.9 mi · 7 min · Westbrook Street
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27
At the end of the road, turn left onto Spruce Head Road
8 m · 1 sec · Spruce Head Road
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28
Arrive at your destination
0 m · 1 sec · Spruce Head Road
Car Route Details
A richer read on the saved driving route between City of Portland and South Thomaston.
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.
Franklin Street
Merge slight left
22 mi · 00h 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.
Rain Showers leaving City of Portland and Patchy Fog near South Thomaston.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from City of Portland to South Thomaston?
The road trip is about 82 miles (132 km) and usually takes 02h 20m 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?
Woolwich is a useful midpoint, sitting about 40.9 miles from City of Portland and 41.1 miles from South Thomaston.
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 23.1 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 1:48 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $11.40 one way or $22.80 round trip. Estimated CO2 is about 25.7 kg one way.
What should you check before leaving?
Before you leave, expect Rain Showers around City of Portland and Patchy Fog near South Thomaston.
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 City of Portland and South Thomaston. Straight-line distance: 58.89 mi (94.78 km).
#1 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 |
#2 South Thomaston
City in Knox County, Maine, United States of America
| Population | 1,642 |
| Coordinates | 44.0514700, -69.1278200 |
| Altitude | 9 |
| Country | United States |
End: South Thomaston (-69.12782, 44.05147)
Estimated Travel Time
Distance: 132 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 02h 43m |
| 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 | $11.40 | $22.80 |
| Mid-grade | $4.46 | $12.88 | $25.76 |
| Premium | $4.86 | $14.04 | $28.08 |
| Diesel | $6.00 | $17.33 | $34.66 |
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.