healthy? if you've got good knees and aren't lugging a piano that far then sure
realistic? I dunno, how long does it take you and do you want to do it on a bad day with rain?
my recommendation is to buy a bike, you'll cover those 2.5 miles in a jiffy depending on how fast you cycle and whether you're on a hill. But seriously, bikes are amazing. it's also good exercise for your legs, you'll have nice calves after a while. you might even get addicted and end up buying a road bike and then you'll end up joining a group...