The Russian route A121, also known as the Sortavala Highway, is a Russian federal highway from Saint Petersburg to R21 highway in the Republic of Karelia. On the route Saint Petersburg – Sortavala – R21 "Kola" its length is 448 km.[1] In 2017 a 54-km-long road section to Vyartsilya and Finland–Russia border became a part of the A121 highway[2] increasing the total length of the Sortavala Highway to 502 km.
![A121 "Sortavala" in Pryazhinsky District of the Republic of Karelia.[3]](File:%D0%A3%D1%87%D0%B0%D1%81%D1%82%D0%BE%D0%BA_%D1%81_424_%D0%BF%D0%BE_445_%D0%BA%D0%BC_%D1%82%D1%80%D0%B0%D1%81%D1%81%D1%8B_%D0%90-121_%C2%AB%D0%A1%D0%BE%D1%80%D1%82%D0%B0%D0%B2%D0%B0%D0%BB%D0%B0%C2%BB_(2).jpg)
![The highway in Priozersky District of Leningrad Oblast. Smorodinka River (Volchya tributary) [ru] flows beneath the bridge on the 46th km of the route.](File:A121_highway_(Russia)_47_-_48_km.jpg)
![A bridge over Tikhaya River [ru] in Priozersky District in Leningrad Oblast.[4]](File:%D0%A0%D0%B5%D0%BA%D0%BE%D0%BD%D1%81%D1%82%D1%80%D1%83%D0%B8%D1%80%D0%BE%D0%B2%D0%B0%D0%BD%D0%BD%D1%8B%D0%B9_%D1%83%D1%87%D0%B0%D1%81%D1%82%D0%BE%D0%BA_%D1%81%D0%BE_131_%D0%BF%D0%BE_153_%D0%BA%D0%BC_%D1%82%D1%80%D0%B0%D1%81%D1%81%D1%8B_%D0%90-121_%C2%AB%D0%A1%D0%BE%D1%80%D1%82%D0%B0%D0%B2%D0%B0%D0%BB%D0%B0%C2%BB_(2).jpg)
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