Directions from Denver International Airport (DIA)
Driving time between DIA and Boulder is approximately 60 to 90 minutes. From DIA, follow Peña Boulevard (10 miles) south to I-70, and exit onto I-70 west. Follow I-70 west to I-270 west. I-270 merges into U.S. 36 west and takes you west into Boulder (about 23 miles).