Where Is Boulder Colorado?

Boulder is located in the U.S. state of Colorado at the base of the foothills of the Rocky Mountains where the Rocky Mountains meet the Great Plains at an elevation of 5,430 feet above sea level. The city is 25 miles northwest of Denver. Denver International Airport is located 50 miles southeast of Boulder.

Directions To Boulder From Denver International Airport

From the airport, take Pena Boulevard towards Denver. Go west on I-70. Take a right on I-270. Continue straight past I-25, where I-270 becomes US 36. On entering Boulder, US 36 turns north and becomes 28th Street, the main commercial thoroughfare. Pearl Street crosses 28th street about a mile to the north. The Pearl Street pedestrian mall is between 11th and 15th streets, about a mile west of 28th St.


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Take the same route to return to the airport. Watch the signs carefully around I-25, I-76, and I-270. Continue straight to I-270, then I-70 (avoiding the I-225 exit), then Pena Blvd. to the airport.

The E-470 toll road connects Pena Blvd. with 96th Street, just north of US 36. It’s not worth the bother most of the time. (It’s only a few miles shorter and has three stops with $6.00 tolls.) But it can save a lot of time during rush hour, especially when heading to the airport.