Beppu-Ōita Marathon
... that the Beppu-Ōita Marathon in Japan produced world record-breaking marathon runs in both 1963 and 1978?
... that the <b id="mwCoU"><a href="./Beppu-Ōita_Marathon" id="mwCoY" rel="mw:WikiLink" title="Beppu-Ōita Marathon">Beppu-Ōita Marathon</a></b> in <a href="./Japan" id="mwCoc" rel="mw:WikiLink" title="Japan">Japan</a> produced <a href="./Marathon_world_record_progression" id="mwCog" rel="mw:WikiLink" title="Marathon world record progression">world record</a>-breaking <a href="./Marathon" id="mwCok" rel="mw:WikiLink" title="Marathon">marathon</a> runs in both 1963 and 1978?