There are 3 ways to get from Boulder to Keystone by bus, car or shuttle

Select an option below to see step-by-step directions and to compare ticket prices and travel times in Rome2rio's travel planner.

Recommended option

Bus  •  4 h 8 min

  1. Take the bus from Broadway & Euclid Ave to Denver Airport Station Gate 6 Ab1
  2. Take the bus from Denver International Airport to Keystone Resort Summit Express

$129

Cheapest option

Bus, shuttle  •  4 h 9 min

  1. Take the bus from Downtown Boulder Station Gate 2 to Denver Airport Station Gate 6 Ab1
  2. Take a shuttle bus from Denver Airport to Keystone

$69 - $99

1 alternative option

Drive  •  1 h 36 min

  1. Drive from Boulder to Keystone 86.4 miles

$8 - $13

What companies run services between Boulder, CO, USA and Keystone, CO, USA?

You can take a bus from Boulder to Keystone via Denver Airport Station Gate 6 and Denver International Airport in around 4 h 8 min.

Bus operators
Regional Transportation District
Website
rtd-denver.com
Bus from Broadway & Euclid Ave to Denver Airport Station Gate 6
Ave. Duration
1 h 8 min
Frequency
Hourly
Estimated price
$9
Schedules at
rtd-denver.com
Bus from Downtown Boulder Station Gate 2 to Denver Airport Station Gate 6
Ave. Duration
1 h 15 min
Frequency
Hourly
Estimated price
$9
Schedules at
rtd-denver.com
Summit Express
Website
summitexpress.com
Bus from Denver International Airport to Keystone Resort
Ave. Duration
2 h
Frequency
5 times a day
Estimated price
$120
Schedules at
summitexpress.com
Colorado Mountain Express
Website
coloradomountainexpress.com
Shuttle from Denver Airport to Keystone
Ave. Duration
2 h 24 min
Frequency
Hourly
Estimated price
$60 - $90
Schedules at
coloradomountainexpress.com

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Questions & Answers

The distance between Boulder and Keystone is 75 km. The road distance is 138 km.

The cheapest way to get from Boulder to Keystone is to drive which costs $8 - $13 and takes 1 h 36 min.

The quickest way to get from Boulder to Keystone is to drive which takes 1 h 36 min and costs $8 - $13.

No, there is no direct bus from Boulder to Keystone. However, there are services departing from Broadway & Euclid Ave and arriving at Keystone Resort via Denver International Airport. The journey, including transfers, takes approximately 4 h 8 min.

It takes approximately 4 h 8 min to get from Boulder to Keystone, including transfers.