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How to get fromBoulder to Castle Rockby bus, tram or car

Find Transport to Castle Rock

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There are 4 ways to get from Boulder to Castle Rock by bus, tram, or car

Select an option below to see step-by-step directions and to compare ticket prices and travel times in Rome2Rio's travel planner.

  1. Bus, tram

    best
    1. Take the bus from Broadway & 20th St to Union StationbusFf1 / ...
    2. Take the tram from Union Station Light Rail Plaza to Ridgegate Parkway StationtramE
    2h 7m
    $46–56

  2. Drive 55.1 mi

    cheapest
    1. Drive from Boulder to Castle Rockcar55.1 mi
    1h 4m
    $10–15

  3. Bus, tram via Denver

    1. Take the bus from Broadway & 20th St to Union StationbusFf1 / ...
    2. Take the tram from Union Station Light Rail Plaza to Ridgegate Parkway StationtramE
    2h 8m
    $46–56

  4. Bus

    1. Take the bus from Downtown Boulder Station Gate 1 to Union StationbusFf1 / ...
    2. Take the bus from Union Station Gate B4 to Sky Ridge StationbusSouth
    3h 4m
    $46–59

Questions & Answers

What companies run services between Boulder, CO, USA and Castle Rock, CO, USA?

You can take a bus from Downtown Boulder Station Gate 1 to Castle Rock via Union Station, Union Station Gate B4, and Sky Ridge Station in around 3h 4m.

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