The average bus between St. Petersburg and Key Largo takes 17h 15m and the fastest bus takes 15h 33m. There is at least one bus per day from St. Petersburg to Key Largo. 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 once daily between St. Petersburg and Key Largo. The earliest departure is at 10:37 AM in the morning, and the last departure from St. Petersburg is at 5:47 PM which arrives into Key Largo at 9:20 AM. All services require a transfer at Marion Transit Parking Lot and take an average of 17h 15m. The schedules shown below are for the next available departures.
Arrives next day


16h 42m • 2 changes
Arrives next day


15h 33m • 2 changes
Arrives next day


16h 42m • 2 changes
Arrives next day


18h 33m • 2 changes
Want to know about travelling from St. Petersburg to Key Largo? 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 St. Petersburg to Key Largo. However, there are services departing from St. Petersburg station and arriving at Key Largo station via Marion Transit Parking Lot. The journey, including transfers, takes approximately 17h 15m.
St. Petersburg to Key Largo bus services, operated by Pinellas Suncoast Transit Authority, depart from 2Nd Ave Ne + Beach Drive station.
St. Petersburg to Key Largo bus services, operated by Pinellas Suncoast Transit Authority, arrive at Key Largo Bus Stop station.
The distance between St. Petersburg and Key Largo is 372.1 km. The road distance is 600 km.
You can take a bus from 2Nd Ave Ne + Beach Drive to Key Largo Bus Stop via Marion Transit Parking Lot, Tampa Bus Station, and Miami Airport Station in around 10h 38m.