The average bus between Diamond Bar and Monrovia takes 1h 58m and the fastest bus takes 1h 19m. The bus service runs several times per day from Diamond Bar to Monrovia. 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 Diamond Bar and Monrovia. The earliest departure is at 6:52 AM in the morning, and the last departure from Diamond Bar is at 9:29 PM which arrives into Monrovia at 5:11 AM. All services require a transfer, and take on average 1h 58m. The schedules shown below are for the next available departures.

1h 29m • 1 change

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1h 37m • 1 change

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1h 37m • 1 change

1h 29m • 1 change

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1h 33m • 1 change

1h 37m • 1 change

1h 29m • 1 change

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1h 33m • 1 change

1h 37m • 1 change
Want to know about travelling from Diamond Bar to Monrovia? 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 Monrovia. However, there are services departing from Diamond Bar station and arriving at Monrovia station via El Monte Station Upper Level station. The journey, including transfers, takes approximately 1h 58m.
Diamond Bar to Monrovia bus services, operated by Foothill Transit, depart from Cal Poly Pomona Admin station.
Diamond Bar to Monrovia bus services, operated by Foothill Transit, arrive at Primrose Ave and Lime Ave station.
The distance between Diamond Bar and Monrovia is 21.9 km. The road distance is 36 km.
You can take a bus from Cal Poly Pomona Admin to Primrose Ave and Lime Ave via El Monte Station Lower Level in around 2h 2m.