Florida State Road 686

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State Road 686
SR 686 in red, SR 686A in purple, CR 416 in blue
Route information
Maintained by FDOT
Length	10.823 mi[1] (17.418 km)
Major junctions
West end	US 19 Alt. in Largo
Major intersections	US 19 in Largo I-275 in St. Petersburg
East end	US 92 / SR 687 / SR 694 in St. Petersburg
Location
Country	United States
State	Florida
Counties	Pinellas
Highway system
Florida State Highway System Interstate US State Former Pre‑1945 Toll Scenic
← SR 685 → SR 687

State Road 686A
Location	St. Petersburg
Length	1.439 mi (2.316 km)

County Road 416
Location	Largo
Length	3.00 mi[2] (4.83 km)

State Road 686 (SR 686) is an east–west route in Pinellas County, running from U.S. Route 19 Alternate (Alt. US 19) in Largo east to an intersection with SR 687 (4th Street) and SR 694 (Gandy Boulevard) in St. Petersburg, Florida. Originally, SR 686 extended further west, ending at Gulf Boulevard in Belleair Beach, next to the shores of the Gulf of Mexico.