Most cities to co-ordinate the same half marathon race simultaneously

Most cities to co-ordinate the same half marathon race simultaneously
Who
One Run Half Marathon
What
49 total number
Where
Russian Federation (Moscow , Russian Federation)
When
The most cities to co-ordinate the same half marathon race is 49 achieved by "One Run" half marathon (Russian Federation) in cities across Russia on 30 May 2021
This attempt broke the previous record of 31 cities which was set by the same marathon in 2020.