CIRA is located at Colorado State University's Foothills Campus in Fort Collins, Colorado . Just 70 miles north of Denver, CIRA is surrounded by atmospheric research and training organizations all along the Colorado front range.

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1. When exiting DIA, you will be on Peña Boulevard.
2. Take Exit 6B for Northbound E-470 toward Fort Collins.
   Note: E-470 is a tollway. As of August, 2007, the trip from Peña Boulevard to I-25 North cost $4.00. Toll plazas accept cash only. Please see http://www.e-470.com/ for the latest information, or see the note below for an alternative route.
3. Take I-25 Northbound (Exit 47) towards Fort Collins. Continue on I-25 for about 42 miles.
4. Avoiding the E-470 toll
   Taking E-470 is the fastest and most direct route to CIRA from DIA. However, if you wish to avoid the toll on E-470, take the following route:
   1. Continue on Peña Boulevard and exit on Tower Road Northbound.
   2. Continue on Tower Road to 104th Avenue and turn left (West, towards the mountains).
   3. Take 104th Avenue to I-25 Northbound towards Fort Collins.
   
5. Take the 3rd Fort Collins exit (Mulberry/C0-14 W, Exit 269B), turning west (right, towards the mountains) on Mulberry/CO-14.
6. Continue for about 7 miles. Mulberry will dead-end at Overland Trail. Turn right (North) on Overland Trail.
7. Continue about 1/2 mile to LaPorte Avenue. Turn Left (West) at the stoplight on LaPorte and Overland.
   
8. Continue for about 3/4 mile and turn left into the CIRA/ATMOS complex.
9. Bear left up the hill to the parking lot.