USA › Road trip gas calculator › Boston to Portland, Maine
Boston to Portland, Maine: gas cost
About 110 miles one way. Fuel cost at this week’s average regular price in Boston: $4.127 per gallon (EIA, week of Nov 2, 2026).
Fuel cost by vehicle
| Vehicle | MPG | Gallons | One way | Round trip |
|---|---|---|---|---|
| Compact car | 35 | 3.1 | $12.97 | $25.94 |
| Midsize sedan | 30 | 3.7 | $15.13 | $30.26 |
| SUV / crossover | 24 | 4.6 | $18.92 | $37.83 |
| Pickup truck | 18 | 6.1 | $25.22 | $50.44 |
💡 Prices in New Hampshire are often lower than in Massachusetts and Maine.
Calculate with your own numbers
Popular road trips
FAQ
How much does it cost to drive from Boston to Portland, Maine?
At about 110 miles and this week’s average of $4.127 per gallon (Boston), a car averaging 30 MPG uses about 3.7 gallons – roughly $15.13 one way or $30.26 round trip.
How many gallons of gas from Boston to Portland, Maine?
About 3.1 gallons for a 35 MPG car, 4.6 for a 24 MPG SUV and 6.1 for an 18 MPG pickup.
Gas prices by state this week → · Gas price history → · More calculators →
Distances are approximate driving distances. Gas prices: U.S. Energy Information Administration weekly averages for regular gasoline; actual prices along the route vary.