Longmont rhymes with:
ausimont, belmont, bromont, claremont, claymont, clermont, crestmont, enimont, erbamont, fairmont, freemont, helmont, inmont, jeumont, larchmont, newmont, oakmont, piedmont, richemont, rosemont, valmont, whitemont
Longmont sounds like:
long-winded, longhand, luminescent, luncheonette