The Annual Tsukuba Marathon will be held on November 22nd, Sunday.  
The running course <Map> includes the Higashi-Odori right in front of KEK.  
As the result, there will be a traffic control so that it may not be easy (if not impossible) to get out of KEK or to get in KEK between around 9:00 and 11:15. 

KEK will open the South side entrance as the KEK main entrance will be practically blocked. <Detour guidance Map >

It may not be easy even for bicycles to go through the spectators and bus services will be useless. Should you need to go out or come in to KEK, you are advised to do so well before 9:00 or well after 11:30 on the day, especially if you need to fly out of Narita.

A Tuku-bus(Hokubu Shuttle) timetable at November 22.<PDF>

Contact : Please email to Users Office. usersoffice@mail.kek.jp