We have sent you an email on Friday, April 17, 2020 regarding an entry deferral selection to be made in mid-May.
However, with escalating situation surrounding the COVID-19 (coronavirus) within Japan, we have decided to change the selection period as follows:

Before: mid-May
Now: within July

Also note, it was outlined in the Entry Regulation of the Tokyo Marathon 2020 that the "My Entry" account will be eliminated in late May.
However, with the entry deferral that shall change and your My Entry account along with registered personal information will be transferred to the selected event.

We will send you an email in July once the system is available to make the selection to defer your entry.

Thank you in advance for your patience and your cooperation.