Credit cards not accepted. Takes less than an hour. Credit cards not accepted. Rental Cars Alamo , Avis , Budget , Hertz and National all have counters on Level 5 of the main terminal. Exact change is required.
Transfers are free, so ask the driver for one when boarding.
The RTD 16th Street Mall Shuttle is free and a wonderful resource for visitors. Yellow Cab charges the same rates. The Cultural Connection Trolley makes regular stops at the Denver Museum of Natural History, Denver Zoo, U.S. Mint, Denver Botanic Gardens and other attractions. Board at any of those sites. Light Rail Light rail serves 14 stops from I-25 and Broadway to 30th and Downing.