A sudden snowfall is expected in the Kanto region tomorrow and may disrupt the renowned Hakone Ekiden relay marathon. With harsh weather conditions predicted, event organizers and participating teams are on high alert, preparing contingency plans. Weather analysts are closely monitoring the situation, as its impact remains uncertain.

The Hakone Ekiden is a major cultural event in Japan during early January. It's not just a sporting event but also draws national attention for university pride and individual drama. Any weather disruptions are usually taken seriously given the safety concerns it raises for runners and spectators.

In the US or EU, weather events disrupting sports events would also be taken seriously. Just like the Hakone Ekiden, marathons or similar outdoor events can be rescheduled or carefully managed to ensure the safety of all participants and spectators.