Grady’s Guidebook

The cheapest (and often the fastest) way is to take the A-Line train to/from Union Station which is a five-minute walk away. I believe it is about $10 each way. The train runs frequently, but you can check the schedule here: https://www.rtd-denver.com/app/route/A/schedule

The 16th Street Mall bus is free to ride and picks up a few blocks away. This is a free way to visit the outdoor mall on 16th Street.