The average bus between Diamond Bar and Riverside takes 3h 50m and the fastest bus takes 2h 39m. The bus service runs several times per day from Diamond Bar to Riverside. 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 3 times a day between Diamond Bar and Riverside. The earliest departure is at 12:09 AM at night, and the last departure from Diamond Bar is at 5:57 PM which arrives into Riverside at 8:36 PM. All services require a transfer at Pomona Transit Center and take an average of 3h 50m. The schedules shown below are for the next available departures.



7h 6m • 3 changes


2h 41m • 3 changes


2h 50m • 3 changes


2h 39m • 3 changes


7h 6m • 3 changes


2h 41m • 3 changes


2h 50m • 3 changes


2h 39m • 3 changesWant to know about travelling from Diamond Bar to Riverside? 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 Diamond Bar to Riverside. However, there are services departing from Diamond Bar station and arriving at Riverside station via Pomona Transit Center. The journey, including transfers, takes approximately 3h 50m.
Diamond Bar to Riverside bus services, operated by Foothill Transit, depart from Diamond Bar Blvd and Sunset Crossing Rd station.
Diamond Bar to Riverside bus services, operated by Foothill Transit, arrive at Market + Ninth station.
The distance between Diamond Bar and Riverside is 39.1 km. The road distance is 64 km.
You can take a bus from Diamond Bar Blvd and Sunset Crossing Rd to Magnolia + Beatty via Pomona Transit Center, Richton 5091 at Montclair TransCenter, and Market + Ninth in around 3h 19m.