Gymns will end 2013 seven points clear of JCK Division Two.
Goals from James Murphy, Connor Dempsey, Daniel Kewley, Marek Mirvan and Jeremy Lovett fired them to a 5-0 home success over Malew at Tromode.
Douglas Royal remain second after seeing off Douglas and District.
Doubles from strike partners Paul Whitley and Ryan Kelly and one apiece from Frank Luckman and player-manager Gavin Gawne sealed a 6-1 win.
Daniel Stewart–Clague scored the D&D consolation from the penalty spot.
Marown are still hot on their heels after a 7-1 triumph over Braddan.
Stuart Morris was the star of the show with four goals.
Dylan Bridges, Gary Christian and Joey Rothwell grabbed the others with Wil Smith scoring the sole Braddan goal.
Ayre United are up to fourth after a 3-0 win at lowly Ronaldsway, courtesy of goals from Johnny Kelly, Chris Murdoch and Paul Kennish.
Barry English, Dave Skillen and Ben Cowin were on target as Pulrose won 3-2 at Onchan to end the year on a high and move into 10th place.