Adyshkin covered the distance of 21.1 km in 1 hour 4 minutes 10 seconds.
The silver medal was won by Andrey Leiman (1:04.16), the bronze medal went to Stepan Kiselyov (1:04.18).
Korobkina won with a score of 1 hour 10 minutes 47 seconds.
The second place was taken by Elizaveta Pogudo (1:12.06), the third - by Marina Kovaleva (1:13.46).
The 2021 marathon was canceled due to the coronavirus pandemic.
Earlier it was reported that the All-Russian Federation of Athletics (VFLA) may return membership to World Athletics after the autumn audit.