Get Ready to Hop on Board!

The Zero Fare Transit Fund allows eligible transit agencies in Colorado to apply through CASTA for one of two Zero Fare grant programs: an Ozone Season Transit Grant or a Youth Ride Free Transit Grant.

During the months of June-August 2025, public transit agencies around the state of Colorado are joining together to take part in the collaborative, statewide Ozone Season Transit Grant initiative in partnership with the Colorado Energy Office. The Ozone Season Transit Grant program is designed to reduce ground level ozone by increasing use of public transit.

This year, agencies were also given the opportunity to choose to participate in the Youth Ride Free grant program, receiving grant funding to provide a year-long free fare program for youth.

We hope you enjoy taking advantage of the Zero Fare program to try transit to get to work, school, a Doctor's appointment, or a weekend exploring Colorado.

Zero Fare August Participants

2025 Participating Agencies

Check out our map to see the agencies that are participating in the Zero Fare program in 2025, as well as those who provide fare-free transit year-round.

Click the Map to view the 2025 data.

2025 OSTG Agency Participants

Mountain Express Transit
Mountain Express Transit (MET) is using Zero Fare Transit Grant funding to provide fare-free service from June 1 through August 31, 2025. The MET has expanded its Pagosa Springs fixed route by adding a second bus to increase frequency from hourly to every 30 minutes and extended hours to better serve the local workforce. Additionally, the weekly route to Durango via Arboles is operating fare-free throughout the summer, providing access to the airport, medical facilities, and government services not available in Archuleta County.

Prowers Area Transit
Prowers Area Transit is providing fare-free service on all door-to-door routes from June 2 through August 29, 2025. This includes both local and out-of-town rides, which normally require a fare, to encourage ridership and reduce vehicle use in the community.

Southeast Colorado Enterprise Development (SETran)
SETran is using Zero Fare funding to provide free service on its existing routes and to operate a new expansion route during June, July, and August 2025. The new route connects Las Animas to Crowley County and Fowler, reaching remote rural areas that previously lacked public transit access to larger hubs such as La Junta for medical appointments and essential services.

Via Mobility Services
Via Mobility Services is using grant funds to add weekend service from June 1 through August 31, 2025. This demand-response service operates in Denver, Boulder, and Weld Counties, with 12 weekend routes optimized to meet rider demand. Service is available on Saturdays and Sundays from 9:30 a.m. to 3:30 p.m.

Town of Snowmass Village
The Town of Snowmass Village is providing fare-free service throughout its entire accessible road network during the 2025 summer season. The expanded demand-response service, supported by Zero Fare funding, operates from June 2 through September 20 and improves access to neighborhoods, employment areas, and trailheads not previously served by transit.

Town of Breckenridge Free Ride Transit
Breckenridge Free Ride is using Zero Fare funding to provide fare-free service on the Gold Route to Ski Hill Road from June 1 through August 31, 2025.

Mountain Metropolitan Transit
Mountain Metropolitan Transit is providing fare-free service on all fixed routes and ADA complementary paratransit service during July and August 2025.

Greeley-Evans Transit
Greeley-Evans Transit is offering fare-free service from June 1 through August 31, 2025. Services include eight fixed routes on weekdays, six routes on Saturdays, ADA complementary paratransit, and the general public demand-response service (Call-N-Ride).

Grand Valley Transit (Mesa County)
Grand Valley Transit is offering systemwide fare-free service on all fixed routes and paratransit from June 2 through August 30, 2025. A new route launched July 1 expands the system from 11 to 12 routes, with 30-minute frequency along parts of North Avenue, one of the busiest corridors in the region.

Town of Vail
The Town of Vail is using grant funds to expand summer transit service in coordination with its managed parking program. From Memorial Day through mid-November, service levels match those of the early winter schedule, including increased frequency on the Sandstone Route, extended East Vail service, and new Lionsridge Loop and West Vail Express routes. These enhancements include 92 days of Zero Fare service during the ozone season.

La Junta Transit
La Junta Transit is providing fare-free service during June, July, and August 2025. The system operates Monday through Thursday from 7:00 a.m. to 5:00 p.m. and on Fridays until 11:00 a.m.

Town of Estes Park
The Town of Estes Park is using Ozone Season Transit Grant funding to extend service hours on four routes from July through August 2025. The Gold, Silver, Blue, and Brown Routes now run until 9:00 p.m., keeping all fixed routes on a consistent schedule for the summer season.

Town of Basalt
The Town of Basalt is expanding its free on-demand transit service from June through August 2025. Service hours are extended Monday through Friday from 10:00 a.m. to 3:00 p.m. and can be accessed through a mobile app.

City of Loveland Transit (COLT)
The City of Loveland Transit is offering free fares on all seven fixed routes and associated paratransit from July 28 through August 30, 2025.

North East Colorado Association of Local Governments (NECALG)
NECALG is using grant funding to provide fare-free service on the Prairie Express fixed route in Sterling from June through August 2025. Two staggered routes serve 18 stops every 30 minutes on weekdays and hourly on Saturdays.

City of Fountain
The City of Fountain is offering fare-free service on its circulator route from June through August 2025. The route operates Monday through Friday from 5:00 a.m. to 8:30 p.m. at 45-minute intervals, and on Saturdays from 9:00 a.m. to 5:00 p.m. at 90-minute intervals.

City of Durango – Durango Transit
Durango Transit is expanding its Zero Fare program to include the evening on-demand service DuranGO! for the first time. From June 1 through August 31, 2025, DuranGO! operates fare-free from 5:00 p.m. to midnight, seven days a week, throughout the city limits and nearby areas. Service has been increased on Friday and Saturday evenings to meet rider demand.

Seatbelt Check!

Some of La Junta's youngest riders enjoying Zero Fare August 2022. They used public transit to get to the library, pool, park, and more!

Fares Gone, Shades On

The Prowers County team prepares for a cool, fare-free 2024 summer!

Transit Agency Resources

CASTA has applied to administer the Zero Fare program for the public transit agencies other than RTD. Interested agencies may find the program application and other resources at the end of this page.