Tugimaantee 63 (ofcl. abbr. T63), also called the Karisilla–Petseri highway (Estonian: Karisilla–Petseri maantee), is a 17.8-kilometre-long[1] national basic road in southeastern Estonia. The highway begins at Karisilla on national road 45 and ends at the Koidula border crossing on the Russian border north of Pechory.[2]