The London Marathon has been rescheduled until Oct. 4 amid concerns surrounding the coronavirus outbreak, organisers announced on Friday.
The annual race was set to take place on April 26 but it has become the latest sporting event to be postponed for safety reasons.
"The world is in an unprecedented situation grappling with a global pandemic of COVID-19 and public health is everyone's priority," event director Hugh Brasher said in a statement.
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"We know how disappointing this news will be for so many -- the runners who have trained for many months, the thousands of charities for which they are raising funds and the millions who watch the race every year.
"We know that there will be many, many questions from runners, charities and others and we ask you to please bear with us as we work through the detailed planning process to deliver the 2020 Virgin Money London Marathon on its new scheduled date.
"We will email all runners and charities today and then update them via email by the end of next week at the latest. We will also post regular updates on our website and social media channels."
It is the first time the marathon has been postponed since its launch in 1981.
The announcement comes hours after April's Boston Marathon was postponed until Sept. 14.
In recent days, the Rome Marathon was canceled, the Paris Marathon was postponed from April 5 to Oct. 18, and the Barcelona Marathon was postponed from March 15 to Oct. 25, all over concerns around COVID-19.
This month's Tokyo Marathon was expected to have 38,000 participants but was limited to elite runners due to concerns over the outbreak of the virus in Japan.
Spectators at the Los Angeles Marathon, held earlier this month, were advised to practice social distancing.