The drive from South Portland Gardens, ME to Stonington, ME covers 163.6 miles and takes about 3h 40m behind the wheel.
This route is realistic as a one-day drive if you keep your stops efficient.
The route leans on I 295, Route 3, Maine Turnpike for much of the mileage,
and the overall profile is mixed drive.
The longest uninterrupted segment is about 49.9 miles on I 295.
At current regular gas prices, budget about $26.19 one way before food or hotel costs.
Trip Pace
Same-day drive is realistic
A same-day return is realistic if you keep stops short.
Break Rhythm
1 planned break
A short stop every 2 to 3 hours is enough for this drive.
Midpoint
81.8 miles from South Portland Gardens, ME
A natural place for your longest stop of the day
, about 1h 40m into the drive
.