Distance between cities › USA › Montana › Boulder, MT › Distance from Boulder to Annapolis Junction Book Hotels

Distance from Boulder, MT to Annapolis Junction, MD

Distance

2,151 mi

Time

1 day 14 hours

Gas Cost

$200 - $390

There are 1,844.60 miles from Boulder to Annapolis Junction in southeast direction and 2,151 miles (3,461.70 kilometers) by car, following the I-90 and US-14 and US-16 Truck and SD 79 route.

Boulder and Annapolis Junction are 1 day 14 hours far apart, if you drive non-stop .

This is the fastest route from Boulder, MT to Annapolis Junction, MD. The halfway point is Blue Earth, MN.

Please note the time difference between Boulder, MT and Annapolis Junction, MD is 2 hours. The current time in Boulder is 12:02 am and the current time in Annapolis Junction is 2:02 am.

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Lowest Price Rental Cars in Boulder, MT

Planning on renting a car to go from Boulder, MT to Annapolis Junction, MD? Here there are some offers to rent a car in Boulder, MT

Small

From $14

Intermediate

From $18

Full-size

From $24

SUVs

From $28

Vans

From $40

Compare rental car prices in Boulder »

Gas Consumption and Emissions

A car with a fuel efficiency of MPG will need 86.37 gallons of gas to cover the route between Boulder, MT and Annapolis Junction, MD.

The estimated cost of gas to go from Boulder to Annapolis Junction is $281.75.

During the route, an average car will release 1,692.24 pounds of CO₂ to the atmosphere. The carbon footprint would be 0.79 pounds of CO₂ per mile.

Average USA gas price used for calculation is $3.26 per gallon of regular gas. Price last updated on March 12, 2026.
Read more about our CO₂ calculation.

Halfway Point Between Boulder, MT and Annapolis Junction, MD

If you want to meet halfway between Boulder, MT and Annapolis Junction, MD or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 43.652336 and -94.195267, or 43º 39' 8.4096" N, 94º 11' 42.9612" W. This location is 1,075.36 miles away from Boulder, MT and Annapolis Junction, MD and it would take approximately 19 hours 21 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Blue Earth, MN, situated 1,073 miles from Boulder, MT and 1,137 miles from Annapolis Junction, MD. It would take 15 hours 41 mins to go from Boulder to Blue Earth and 17 hours 1 min to go from Annapolis Junction to Blue Earth.