We are a small community with only about 500 properties listed at any one time. It is easy to stay atop all the properties available.  I have lived here since 1992 and as a result am an 'honorary' CONCH.  Like being a Kentucky Colonel.  Marathon is in the heart of the Keys, about 75 miles south-west of metro Miami.  Close enough that if you get  "mall fever " you can get your 'fix' in about two hours, yet far enough away that you get no impact from a large city.  Heading west, yes west, you come to Key West.  About 1 1/2 hour drive and you are at the end of the road. Literally. Parrothead city, Duval crawl and Fantasy Fest , you got a love it! 

We are cooler in the summer and warmer in the winter than Miami.  Our average year around temperture is 79 degrees. Our average SNOWFALL is  -zero-.  Most important is our water temp which runs between the low 70's and the mid 80's. Every day is a fine day to swim, snorkel or dive. 

Oh, don't forget about fishing.  Any day is a good day on the water.   Come try it, you'll not want to leave.