Wonderland Greyhound Park
... that Wonderland Greyhound Park in Revere, Massachusetts features over 7 miles (11 km) of underground piping which heats the race track on cold and wet days?
... that <b id="mwEDg"><a href="./Wonderland_Greyhound_Park" id="mwEDk" rel="mw:WikiLink" title="Wonderland Greyhound Park">Wonderland Greyhound Park</a></b> in <a href="./Revere,_Massachusetts" id="mwEDo" rel="mw:WikiLink" title="Revere, Massachusetts">Revere</a>, <a href="./Massachusetts" id="mwEDs" rel="mw:WikiLink" title="Massachusetts">Massachusetts</a> features over <span about="#mwt33" data-mw='{"parts":[{"template":{"target":{"wt":"convert","href":"./Template:Convert"},"params":{"1":{"wt":"7"},"2":{"wt":"mi"},"3":{"wt":"0"}},"i":0}}]}' id="mwEDw" typeof="mw:Transclusion">7 miles (11</span><span about="#mwt33" typeof="mw:Entity"> </span><span about="#mwt33">km)</span> of underground piping which heats the <a href="./Race_track" id="mwED0" rel="mw:WikiLink" title="Race track">race track</a> on cold and wet days?