Fuel cost calculator · About 105 miles
Gas cost from Boston to Portland
The drive from Boston, MA to Portland, ME is about 105 miles, so a round trip costs about $28.92 in gas at this week's average of $4.13 a gallon. Change the car, fuel or distance below for your own figure.
What the trip costs by vehicle
| Vehicle | One way | Round trip |
|---|---|---|
| Compact car (33 mpg) | $13.15 | $26.29 |
| Midsize sedan (30 mpg) | $14.46 | $28.92 |
| Hybrid (50 mpg) | $8.68 | $17.35 |
| Minivan (22 mpg) | $19.72 | $39.44 |
| SUV (24 mpg) | $18.08 | $36.15 |
| Pickup truck (19 mpg) | $22.83 | $45.67 |
Regular gas at $4.132 a gallon, the average of this week's Massachusetts and Maine prices, from the EIA’s weekly survey. Fuel only: tolls and parking are not included.
Fuel economy figures are round examples for each kind of vehicle, not official ratings. Your own car's EPA rating is on fueleconomy.gov.
Distance: fastest route between city centres, rounded to the nearest 5 miles, calculated with OSRM on OpenStreetMap road data (© OpenStreetMap contributors), measured November 2026.
105 miles in Massachusetts
$14.46
3.5 gallons at $4.13 a gallon
$0.08 less than the same trip at the national average.
- Per mile
- 13.8¢
- A full tank
- $61.95
- about 450 miles
- A year of driving
- $1,652
- $138 a month
Where to fill up
Regular is about $0.06 a gallon cheaper in Massachusetts than in Maine this week, $0.83 on a 15-gallon fill. Fill the tank on the Massachusetts side of the trip. See how Massachusetts’s gas tax compares.
Boston to Portland by car
- How much does gas cost from Boston to Portland?
- About $14.46 one way, or $28.92 for the round trip, in a car that gets 30 mpg. That assumes 105 miles and this week's average regular price of $4.13 a gallon. An SUV at 24 mpg spends about $18.08 one way; a hybrid at 50 mpg about $8.68.
- How far is Boston from Portland by car?
- About 105 miles on the fastest route between the two city centres, measured on OpenStreetMap road data. Your own start and end points may make it a little longer or shorter; type your distance into the calculator for an exact figure.
- How many gallons of gas does the drive take?
- About 3.5 gallons one way at 30 mpg. That fits in a typical 15-gallon tank, so most cars can make it without stopping for fuel.
- Is gas cheaper in Massachusetts or Maine?
- This week regular is about $0.06 a gallon cheaper in Massachusetts, which is $0.83 on a 15-gallon fill. About 4¢ of that gap is state fuel tax. Filling up before you leave Massachusetts saves the most.