State Route 10 Loop (SR 10 Loop, also known as Loop 10, Paul Broun, Sr. Parkway, or the Athens Perimeter) is a 19.1-mile-long (30.7 km) state highway in the form of a beltway around downtown Athens in the U.S. state of Georgia built to freeway standards. Much of SR 10 Loop is concurrent with other highways (including U.S. Route 29 (US 29), US 78, US 129, US 441, SR 8, and SR 15). It also carries the unsigned SR 422. The only numbered routes to travel through downtown Athens are US 78 Bus., SR 10, and SR 15 Alt. Inner/outer directions are used to sign the loop.