Marathons rhymes with:
agamemnon's, ailerons, amazon's, amazons, antiphons, avalon's, axons, crayons, deuterons, echelons, farrakhan's, germiston's, helicons, hogan's, hogans, icons, infotron's, lexicons, liaisons, lifson's, lubicons, mesons, micron's, microns, neons, neutrons, nylons, olajuwon's, pentagon's, pentagons, photons, pompons, positrons, proton's, protons, pylons, ragavan's, reveron's, slip-ons, upjohn's, walk-ons
Marathons sounds like:
maertens, maradona's, maradonna's, marauding, maritimes, martens, martens's, martians, martin's, martinec, martinek, martines, martinez, martinez's, marting, martinique, martinis, martinka, martinko, martins, martins's, mehrtens, meridian's, meriting, mertens, mertins, mortems, morton's