 State Road 688 | ||||
|---|---|---|---|---|
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| Route information | ||||
| Maintained by FDOT | ||||
| Length | 12.913 mi[1] (20.781 km) | |||
| Major junctions | ||||
| West end |  SR 699 in Indian Rocks Beach | |||
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| East end |  I-275 in St. Petersburg | |||
| Location | ||||
| Country | United States | |||
| State | Florida | |||
| Counties | Pinellas | |||
| Highway system | ||||
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State Road 688 (SR 688) is an east–west route in Pinellas County running from Indian Rocks Beach to northeastern St. Petersburg, Florida, where it merges onto Interstate 275 (I-275).