The marathon was slated to take place May 16-17. Organizers say the new date will be announced after the emergency situation is lifted in Latvia.
"Even if May 16-17 seems far away and it would seem that we and the rest of the world will overcome the situation within a month and a half, we're forced to cancel the Rimi Rīga Marathon," the marathon's director Aigars Nords said.
According to Nords, organizers wouldn't be able to assume responsibility for the health of tens of thousands of runners from across the world. He said that the 30th anniversary marathon that will take place once emergency measures are lifted will feature new running routes, special anniversary medals and different initiatives.
The Rīga Marathon is held since 1991. It is one of the biggest public events in Latvia, with an estimated 40,000 runners and 13,000 children attending last year.