How to get from Boulder to Castle Rock by bus?

Boulder to Castle Rock - Bus Schedule

The FF1 bus from Boulder to Castle Rock runs from 5:00 AM to 11:29 PM, with departures every 15-30 min. The trip takes about 2 hr 26 min, with regular service throughout the operating hours.

From Boulder to Castle Rock by bus

To get from Boulder to Castle Rock in Denver - Boulder, CO, you’ll need to take 3 bus lines: take the FF1 bus from Downtown Boulder Station Gate 1 station to Us 36 & Table Mesa Station Gate A station. Next, you’ll have to switch to the AB1 bus and finally take the GROOME TRANSPORTATION bus from Denver Airport East - Door 505 Island 5 station to Days Inn Castle Rock station. The total trip duration for this route is approximately 2 hr 26 min. The ride fare is $40.50. The bus schedule from Boulder may change. We recommend you check the updated bus schedule to Castle Rock on the Moovit app.

146min$40.50
Walk to bus station
Bus - FF1FF1
Bus - AB1AB1
Bus - GROOME TRANSPORTATIONGROOME TRANSPORTATION
Walk to Castle Rock
Leaves from Downtown Boulder Station Gate 1

Step by Step

  • 1
    Walk to bus station
    Walk to bus station
    Downtown Boulder Station Gate 1
    ID 18977
    780 yd • 9 min
  • 2
    Bus - FF1FF1
    Wait for bus
    FF1
    Union Station All-Station
  • 3
    Ride to bus station
    Ride to bus station
    Us 36 & Table Mesa Station Gate A
    ID 34195
    15 min
  • 4
    Bus - AB1AB1
    Wait for bus
    AB1
    Denver Airport Via E-470
  • 5
    Ride to bus station
    Ride to bus station
    Denver Airport Station Bus Gates 6,7,8,9 & 10
    ID 34503
    56 min
  • 6
    Walk to bus station
    Walk to bus station
    Denver Airport East - Door 505 Island 5
    350 yd • 5 min
  • 7
    Bus - GROOME TRANSPORTATIONGROOME TRANSPORTATION
    Wait for bus
    GROOME TRANSPORTATION
    Colorado Springs
  • 8
    Ride to bus station
    Ride to bus station
    Days Inn Castle Rock
    35 min
  • 9
    Walk to Castle Rock
    Walk to
    Castle Rock
    180 yd • 3 min
*Duration based on 8am traffic
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Public transit directions from Boulder to Castle Rock

The distance between Boulder, Denver - Boulder, CO and Castle Rock, Denver - Boulder, CO is approximately 89.62 mi, which can typically be travelled in 146 min. Moovit will show you the directions from Boulder to Castle Rock by bus, so no matter how you choose to travel in Denver - Boulder, CO – you will always have plenty of easy options.

Bus schedule from Boulder to Castle Rock

To check the bus schedule from Boulder to Castle Rock using the Moovit app, first download and open the app on your smartphone. Enter your starting point (Boulder) and destination (Castle Rock), then select the desired date and time of travel. Moovit will show all available bus routes, estimated travel times, and any required transfers. You can view detailed departure and arrival times for each bus, as well as real-time updates for delays or changes. Use this information to plan your trip and stay up to date with the latest bus schedules.

Related Routes

Questions & Answers

  • What is the fastest way to get from Boulder to Castle Rock?

    The fastest way takes 146 minutes, using Bus line FF1, Bus line AB1, Bus line GROOME TRANSPORTATION.

  • Is there a direct bus between Boulder and Castle Rock?

    No, you’ll have to take 3 bus lines in total. The total travelling time is 2 hr 26 min.

  • Which bus line goes from Boulder to Castle Rock?

    The FF1 bus line goes from Downtown Boulder Station Gate 1 station near Boulder in Boulder to Us 36 & Table Mesa Station Gate A station. From there you’ll have to take one bus line till Us 36 & Table Mesa Station Gate A station near Castle Rock in Denver - Boulder, CO.

  • How long does it take to travel from Boulder to Castle Rock by bus?

    The total travel time between Boulder in Boulder and Castle Rock in Denver - Boulder, CO by bus is about 2 hr 26 min.

  • Where do I get on the bus near Boulder to get to Castle Rock?

    Get on the FF1 bus from the Downtown Boulder Station Gate 1 stop near Boulder in Boulder.

  • Where do I get off the bus when travelling between Boulder and Castle Rock?

    Get off the bus at the Us 36 & Table Mesa Station Gate A stop, which is closest to Castle Rock in Denver - Boulder, CO.

  • How much is the bus fare from Boulder to Castle Rock?

    The ride from Boulder to Castle Rock costs $40.50.

Popular Routes