The representative of the Perm Territory covered the distance in 1: 32: 39.0.
The second place was taken by Anastasia Rygalina, 40.6 seconds behind the winner.
Ekaterina Smirnova closed the top three.
Tatiana Sorina withdrew from the race 10 minutes before its start.
The bronze medalist of the Olympics Natalya Nepryaeva, who was listed in the start list, also did not take part in the marathon.
Earlier, Borodavko explained why Bolshunov will not run a marathon in the CR in cross-country skiing.