The average bus between San Clemente and Diamond Bar takes 4h 51m and the fastest bus takes 3h 44m. There is a bus service every few hours from San Clemente 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 2 hours between San Clemente and Diamond Bar. The earliest departure is at 4:40 AM at night, and the last departure from San Clemente is at 8:51 PM which arrives into Diamond Bar at 6:44 AM. All services require a transfer at Newport Trans Ctr Dock 4 and take an average of 4h 51m. The schedules shown below are for the next available departures.


4h 24m • 2 changes


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4h 30m • 2 changes


4h 35m • 2 changes


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4h 11m • 2 changes


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4h 16m • 2 changes


4h 4m • 2 changes


4h 11m • 2 changes


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4h 4m • 2 changes


4h 11m • 2 changes


4h 16m • 2 changes


4h 16m • 2 changes
Want to know about travelling from San Clemente 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 San Clemente to Diamond Bar. However, there are services departing from San Clemente station and arriving at Diamond Bar station via Newport Trans Ctr Dock 5. The journey, including transfers, takes approximately 4h 51m.
San Clemente to Diamond Bar bus services, operated by OCTA, depart from El Camino Real-Avd Cabrillo station.
San Clemente to Diamond Bar bus services, operated by OCTA, arrive at Ring-Brea Mall station.
The distance between San Clemente and Diamond Bar is 69.4 km. The road distance is 91 km.
You can take a bus from El Camino Real-Avd Cabrillo to Diamond Bar Blvd and Sunset Crossing Rd via Newport Trans Ctr Dock 4, Ring-Brea Mall, and Brea Mall in around 4h 37m.