Option 1: (Northwest Parkway Tollway/E470) Exit Hwy 36 at the Storage Tek Dr./Interlocken Exit and turn left (north). Continue north on Storage Tek drive which will become 96th Street, and then will merge with the Northwest Parkway. The Northwest Parkway will become E470 as it crosses I-25; it’s the same road the whole way, only the name has changed. Exit E470 at 96th Avenue (exit 31, toll charge) and turn right on 96th, then left on Tower Road in about 1/2 mile. Continue south on Tower about 1.85 miles to USAirport Parking.
Option 2: (“The Sixes:” Hwy. 36 to I-76 to 96th) This route is fairly good at avoiding metro Denver traffic jams (might be best during rush hour, if you don’t want to pay the toll on NWP/E470). Take Highway 36 south for about twenty miles from Boulder to I-76 eastbound, then exit on 96th Avenue eastbound (right). Then exit I-76 on 96th Avenue, and turn right (eastbound). Continue 96th Avenue, which will jog south and become 88th Avenue, stay on the paved road (The correct road is fairly obvious). Turn right (south) at the stoplight on Tower Road shortly after 96th jogs south and becomes 88th. USAirport Parking is just south of 88th on Tower Road.
To return home from USAirport Parking after your trip, turn left (north) on Tower Road as you exit the facility. Turn left on 88th Avenue, at the stoplight approximately one mile north of the facility. 88th will jog north, and become 96th Avenue. Turn left onto I-76 from 96th Avenue. I-76 connects directly with Highway 36 on the return trip, unlike your trip to DIA.
Option 3: (104th Avenue) Take Highway 36 to 104th Avenue (Church Ranch Road exit) Go east approximately 16 miles on 104th to Tower Road and turn right. Continue south on Tower 2.9 miles to USAirport Parking.
To return home from USAirport Parking after your trip, turn left (north) on Tower Road as you exit the facility. Turn left on 104th Avenue, at the stoplight approximately three miles north of the facility. Continue west on 104th to Highway 36.
Option 4: (I-270) Take Highway 36 south to I-270 eastbound – stay to the left for I-270 as Hwy 36 approaches I-25. I-270 will end by merging with I-70 eastbound in about six miles past the I-25 flyover. Continue east on I-70, then exit on Pena Boulevard (exit 284). Exit Pena at Tower Road, and turn north (left). USAirport Parking will be on your left just north of Pena.
To return home from USAirport Parking after your trip, turn right on Tower Road as you exit the facility and continue south to 3.12 miles to 56th Avenue. Turn right on 56th Ave., then left on Pena in .82 miles, which will merge with I-70 westbound in about 2 miles. Exit on I-270, which will connect with Highway 36.
Option 5: (Highway 52) From North Boulder (Gunbarrel area): The best bet is probably to take Hwy 52 (Mineral Road) to I-25, then head south on I-25. Take I-25 south to Highway 7, the Brighton exit. Go east about 9 miles on Highway 7 and turn right (south) on Highway 85. Continue south on Highway 85 to 104th Avenue and turn left. Take 104th Avenue east about 5 or 6 miles to Tower Road and turn right. Continue south on Tower 2.9 miles to USAirport Parking. This route avoids most Denver Metro traffic jams, and is considerably shorter than going south into Denver on I-25, and then backtracking north to the Airport on Pena. Or, once you reach I-25, head south to E470, and take it to 96th Avenue, turn right on 96th, then left on Tower Road.