via I-95
The drive from Portland Me to Portsmouth Nh takes approximately 1h 2min, covering 57 miles via I-95. Under normal conditions, expect to spend around $6 on gas.
Travel time can vary — during peak hours, weekends, or holidays, the journey may take 2–3+ hours. For the fastest trip, leave early morning (before 7 AM) or travel on weekday evenings.
Traffic is usually worst during weekday rush hours (7–9 AM, 4–7 PM) and holiday weekends.
For this shorter drive, the best time to go is weekday mid-day. Rush hour (7-9 AM and 4-7 PM) can add significant time on this route. Weekends are generally smoother unless it's a holiday.
Plan rest stops every 2-3 hours on longer drives. Check traffic conditions before departure and keep your tank above quarter-full.
This trip can typically be done on a single tank of gas.
The short drive from Portland ME to Portsmouth NH follows I-95 for 57 miles, with an estimated travel time of 1h 2min under normal conditions. Fuel costs run approximately $6 at current prices, assuming average fuel efficiency of 30 MPG. Weekday mid-day is generally the best window to depart for the smoothest ride.
At just 57 miles, this is a comfortable day trip that won't require any fuel stops along the way. You can easily make the round trip in a single day with plenty of time to spare.