Photograph provided courtesy of Denver International Airport.

University of Colorado A Line

Connecting Denver to the World

The University of Colorado A Line is 23 miles of rail that is making local and international travel easier than ever. The new line, which opened on April 22, 2016, provides easy, affordable and reliable connections between downtown Denver, Denver International Airport, and the many communities along I-70. With connections at Union Station to the C, E and W light rail lines, the B Line commuter rail line to Westminster and local and regional buses, your public transportation options now have an international connection.

Why is it called the University of Colorado A Line?

Why is it called the University of Colorado A Line?

RTD is working to establish a long term corporate partnership program to expand revenue opportunities to support a variety of services and programs. The University of Colorado A Line is the first partnership agreement of its kind for RTD and we are excited to implement our first partnership agreement on the line to the airport.

Get more information on our corporate partner program

Fares

How much does it cost?

Travel on the University of Colorado A Line will be local ($2.60), regional ($4.50) or airport fare ($9.00) depending on your destination. Discount fares apply for those who are eligible. Service on the University of Colorado A Line is the same cost as a comparable trip on RTD’s bus services. To learn more about RTD’s fares, visit our fare page. Select a starting and ending station below to calculate your fare:

Loading trip calculator

local

$2.60

1-2 rail fare zones

regional

$4.50

3 rail fare zones

airport

$9.00

to / from DIA

Buy tickets and day passes

You can buy one-way tickets and day passes using cash, credit or debit at the ticket vending machines located at any RTD rail station. The Regional/Airport Day Pass is the same price as a one-way Airport ticket and grants unlimited travel on any RTD service for the remainder of the service day. Regional/Airport Day Pass ticket books may be purchased at any RTD Sales Outlet.

Monthly pass

Take unlimited rides all month on the University of Colorado A Line with RTD's Monthly Pass. Travel to the Airport is included in the Regional/Airport Monthly Pass. Monthly Passes may be purchased at any RTD sales outlet, online, or at participating King Soopers and Albertsons/Safeway.

Learn more about Monthly Pass

EcoPass and CollegePass

Service on the University of Colorado A Line is included with all EcoPass, CollegePass, and Neighborhood EcoPass cards, including service to Denver Airport Station at no additional charge.

Fare Zones

Rail Fare Zone Map

The RTD rail system is divided into four fare zones: A, B, C, and Airport. Rail fares are based on how many fare zones you travel in during your one-way trip. Travel in one or two zones is a Local fare, travel in three zones is a Regional fare, and any trip originating or ending in the Airport zone is an Airport fare.

View fare structure table
Union Station 38th & Blake 40th & Colorado Central Park Peoria 40th Ave & Airport Blvd - Gateway Park 61st & Pena Airport
Union Station -- Local Local Local Local Regional Regional Airport
38th & Blake Local -- Local Local Local Regional Regional Airport
40th & Colorado Local Local -- Local Local Regional Regional Airport
Central Park Local Local Local -- Local Local Local Airport
Peoria Local Local Local Local -- Local Local Airport
40th Ave & Airport Blvd - Gateway Park Regional Regional Regional Local Local -- Local Airport
61st & Pena Regional Regional Regional Local Local Local -- Airport
Airport Airport Airport Airport Airport Airport Airport Airport --

Stations

The University of Colorado A Line has 8 stations total, including Union Station and the Denver Airport Station. Six of these stations will provide 4,329 additional parking spaces. Parking fees may apply.

RTD University of Colorado A Line route map
  • Union Station

    The University of Colorado A Line will stop at Platform 1 at Union Station. This is the closest track to the historic Union Station building and the Union Station Pavilion which provides access to the underground bus concourse.

    See a map of Union Station
  • 38th & Blake

    • Address:3737 Blake St., Denver, CO 80205
    • Car Parking:200
    • Bike Parking:6 bike lockers and 10 racks
    • Connecting bus routes: 12, 44
    • Travel time to Denver Airport Station:33 Minutes
    • Travel time to Union Station:6 Minutes
  • 40th & Colorado

    • Address:4220 Garfield St., Denver, CO 80216
    • Car Parking:200
    • Bike Parking:12 bike lockers and 18 racks
    • Connecting bus routes: 24, 37 , 40, 44
    • Travel time to Denver Airport Station:28 Minutes
    • Travel time to Union Station:10 Minutes
  • Central Park

    This is the largest Park‑n‑Ride on the University of Colorado A Line and is accessible from I-70 via the Central Park Boulevard interchange.

    • Address:8175 E. Smith Road, Denver, CO 80238
    • Car Parking:1,500
    • Motorcycle Parking:34
    • Bike Parking:8 bike lockers and 14 racks
    • Connecting bus routes: 28, 34, 37, 42, 43, 65, 73, 88, 89, 105
    • Travel time to Denver Airport Station:25 Minutes
    • Travel time to Union Station:14 Minutes
  • Peoria

    This station is shared with the northern end of line station for the R Line (opening late 2016) and will provide connections to light rail.

    • Address:11501 E. 33rd Ave., Aurora, CO 80010
    • Car Parking:550
    • Bike Parking:10 bike lockers and 10 racks
    • Connecting rail lines:R Line (late 2016)
    • Connecting bus routes: 37, 45, 121, 153
    • Travel time to Denver Airport Station:21 Minutes
    • Travel time to Union Station:17 Minutes
  • 40th & Airport - Gateway Park

    This existing RTD Park‑n‑Ride will serve as a commuter rail station.

    • Address:3900 North Salida Street, Aurora, CO 80011
    • Car Parking:1,079
    • Connecting bus routes: 37, 42, 45, 121, 169
    • Travel time to Denver Airport Station:16 Minutes
    • Travel time to Union Station:23 Minutes
  • 61st & Peña

    • Address:6195 N. Panasonic Way, Denver, CO
    • accessible via 61st and Tower Road
    • Car Parking: 800*
    • Connecting bus routes: none
    • Travel time to Denver Airport Station: 11 Minutes
    • Travel time to Union Station: 27 Minutes
    • *This parking facility is not owned or operated by RTD. This is a private parkinglot managed by Denver International Airport. Parking fees are $2 every 12 hours or a 30-day pass for $36 (no discounts or free parking). Must pre-pay at the lot with credit/debit cards only. For more information visit flydenver.com.
  • DIA Station Rendering
    Photograph provided courtesy of Denver International Airport.

    Denver Airport Station

    The eastern end of line station on the University of Colorado A Line provides direct access to airline check-in, baggage check, and security screening.

Parking

Parking your car:

  • Parking at Park-n-Rides along the University of Colorado A Line is fee-based parking. Learn how to park at RTD facilities.

    Parking at 61st & Peña: This parking facility is not owned or operated by RTD. This is a private parking lot managed by Denver International Airport. Parking fees are $2 every 12 hours or a 30-day pass for $36 (no discounts or free parking). Must pre-pay at the lot with credit/debit cards only. For more information visit flydenver.com

  • Parking fees at RTD Park-n-Rides depends on if your car is registered within the RTD service area. Check out how to park.

  • If your vehicle is registered within the RTD service area, parking at RTD Park-n-Rides is free for the first 24 hours. After 24 hours, a $2.00 daily fee applies. You must pay before getting on the train.

  • If your vehicle is registered out of district, a $4.00 daily fee applies. You must pay before getting on the train.

  • Safety Tip: Don't advertise your absence. Take your parking receipt with you and do not leave it on your dash.

  • Vehicles may not be parked continuously for longer than 30 consecutive days. Vehicles parked greater than 30 consecutive days without being moved may be subject to ticketing and towing at the owners expense.

How to pay for parking:

Pay onsite

Pay for parking onsite

Look for the blue canopy and kiosk. You can pay in cash (exact change) or credit card.

Pay by phone

Use your phone to pay for parking

Call 1-877-727-5951 (paying by phone will incur a nominal fee)

Pay online

Park mobile  - Parking made simple

www.parkmobile.com or download the Parkmobile app

You must pay onsite, prior to leaving your vehicle. Non-payment of applicable parking fees will result in a fine. Take your paid parking ticket with you – be safe and don’t leave it on your dash.

Learn more about parking at RTD stations