today's London Marathon
... that today's London Marathon is not being run on its usual course, but instead as 19.6 laps around St James's Park, to prevent spectators from attending?
... that <b id="mwBVs"><a href="./2020_London_Marathon" id="mwBVw" rel="mw:WikiLink" title="2020 London Marathon">today's London Marathon</a></b> is not being run on its usual course, but instead as 19.6<span id="mwBV0" typeof="mw:Entity"> </span>laps around <a href="./St_James's_Park" id="mwBV4" rel="mw:WikiLink" title="St James's Park">St James's Park</a>, to prevent spectators from attending?<!--Special occasion hook for October 4-->