Sun Shuttle 421X bus Stop List and Next Departures
The Sun Shuttle 421X - Green Valley / Sahuarita Express bus serves 11 bus stops in the Tucson area departing from SS / Downtown Ronstadt Center (M) and ending at SS / La Canada Dr / Trader Ln (NE). Scroll down to see upcoming 421X bus times at each stop and the next scheduled 421X bus times will be displayed. The full 421X bus schedule as well as real-time departures (if available) can be found in the Transit app.
Sun Shuttle 421X bus route map
The Sun Shuttle 421X - Green Valley / Sahuarita Express bus route map is shown above. The route map shows you an overview of all the stops served by the Sun Shuttle 421X bus to help you plan your trip on Sun Shuttle. Opening the app will allow you to see more detailed information about the route on a map including stop specific alerts, such as stops that have been closed or moved. You can also see the location of vehicles in real-time on the route map so you know when the 421X bus is approaching your stop.
See the detailed route mapSun Shuttle 421X bus Service Alerts
Open the Transit app to see more information about any active disruptions that may impact the 421X bus schedule, such as detours, moved stops, trip cancellations, major delays, or other service changes to the bus route. The Transit app also allows you to subscribe to receive notifications for any service alert issued by Sun Shuttle so that you can plan your trip around any active or future disruptions.
See all alertsSun Shuttle 421X bus Service Frequency
The next 421X bus leaves SS / Downtown Ronstadt Center (M) at 6:30 AM, and arrives at SS / La Canada Dr / Trader Ln (NE) at 7:47 AM. You can see the frequency of upcoming trips and the exact departure times by opening the Transit app.
See all departuresSun Shuttle 421X bus On-Time Performance
92 % on time92% of riders report that the Sun Shuttle 421X bus arrived on time on their previous trip. In the past 30 days, 2 riders reported on the on-time performance of the 421X bus. Compared to other Sun Shuttle lines, the 421X bus is ranked 1 out of 8 Sun Shuttle lines. These on-time performance stats are user reported and may differ from official Sun Shuttle metrics. See more details about on time, late or early departure reports for the 421X by opening the Transit app.
See all on-time performance details