The average bus between Rialto and Diamond Bar takes 2h 58m and the fastest bus takes 2h 20m. The bus runs at least 2 times per hour from Rialto to Diamond Bar. The journey time may be longer on weekends and holidays; use the search form on this page to search for a specific travel date.
Buses run every 30 minutes between Rialto and Diamond Bar. The earliest departure is at 3:46 AM at night, and the last departure from Rialto is at 9:40 PM which arrives into Diamond Bar at 6:55 AM. All services require a transfer at Fontana Metrolink Transit Center and take an average of 2h 58m. The schedules shown below are for the next available departures.


2h 32m • 2 changes


2h 52m • 2 changes


2h 51m • 2 changes


2h 52m • 2 changes


2h 31m • 2 changes


2h 25m • 2 changes


2h 23m • 2 changes


2h 53m • 2 changes


2h 20m • 2 changes


2h 45m • 2 changes


2h 40m • 2 changes


2h 48m • 2 changes
Want to know about travelling from Rialto to Diamond Bar? 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.
No, there is no direct bus from Rialto to Diamond Bar. However, there are services departing from Rialto station and arriving at Diamond Bar station via Pomona Transit Center. The journey, including transfers, takes approximately 2h 58m.
Rialto to Diamond Bar bus services, operated by Omnitrans, depart from Fontana Metrolink Transit Center station.
Rialto to Diamond Bar bus services, operated by Omnitrans, arrive at Diamond Bar Blvd and Sunset Crossing Rd station.
The distance between Rialto and Diamond Bar is 41.4 km. The road distance is 59 km.
You can take a bus from Foothill @ Riverside Ave to Diamond Bar Blvd and Sunset Crossing Rd via Fontana Metrolink Transit Center and Pomona Transit Center in around 2h 55m.