Boulder to Keystone Buses

Boulder to Keystone buses

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Trip Overview

The average bus between Boulder and Keystone takes 7h 20m and the fastest bus takes 3h 3m. The bus service runs several times per day from Boulder to Keystone. The journey time may be longer on weekends and holidays; use the search form on this page to search for a specific travel date.

7h 20m
Duration: 109 mi
Distance: 4 times a day
Frequency

Bus

best

Take the bus from Broadway & 20th St to Union Stationbus Ff1 / ...
Take the bus from Union Station Gate B19 to Frisco Transit Centerbus West / ...

4h 23m

Boulder to Keystone bus times

Buses run 4 times a day between Boulder and Keystone. The earliest departure is at 5:04 AM in the morning, and the last departure from Boulder is at 11:33 PM which arrives into Keystone at 8:24 AM. All services require a transfer at Union Station and take an average of 7h 20m. The schedules shown below are for the next available departures.

Departing Wednesday, October 14, 2026

11:03 PM → 8:24 AM
Arrives next day
9h 20m • 2 changes

Departing Thursday, October 15, 2026

10:51 AM → 2:24 PM
3h 32m • 2 changes
12:54 PM → 4:24 PM
3h 29m • 2 changes
6:07 PM → 6:55 AM
Arrives next day
12h 47m • 2 changes
11:33 PM → 8:24 AM
Arrives next day
8h 50m • 2 changes

Departing Friday, October 16, 2026

11:06 AM → 2:24 PM
3h 17m • 2 changes
12:54 PM → 4:24 PM
3h 29m • 2 changes
6:07 PM → 6:55 AM
Arrives next day
12h 47m • 2 changes

Departing Saturday, October 17, 2026

5:04 AM → 8:24 AM
3h 19m • 2 changes
7:05 AM → 10:24 AM
3h 18m • 2 changes
9:20 AM → 12:24 PM
3h 3m • 2 changes
11:06 AM → 2:24 PM
3h 17m • 2 changes
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Departing Monday, October 19, 2026

10:51 AM → 2:24 PM
3h 32m • 2 changes
12:54 PM → 4:24 PM
3h 29m • 2 changes
6:07 PM → 6:55 AM
Arrives next day
12h 47m • 2 changes
11:33 PM → 8:24 AM
Arrives next day
8h 50m • 2 changes

Departing Tuesday, October 20, 2026

10:51 AM → 2:24 PM
3h 32m • 2 changes
12:54 PM → 4:24 PM
3h 29m • 2 changes
6:07 PM → 6:55 AM
Arrives next day
12h 47m • 2 changes
11:33 PM → 8:24 AM
Arrives next day
8h 50m • 2 changes

Departing Wednesday, October 21, 2026

10:51 AM → 2:24 PM
3h 32m • 2 changes
12:54 PM → 4:24 PM
3h 29m • 2 changes

Frequently asked questions

Want to know about travelling from Boulder to Keystone? We have put together a list of the most frequently asked questions from our users such as: What is the cheapest mode of transport? What is the quickest option? How much do tickets usually cost? and many more.

Trip Overview

Bus