Key West FL - small march (1,000 or so), but it's a small town. Still, we spanned about 3 blocks as we marched down Duval St., from the Atlantic coast all the way across Florida to the Gulf of Mexico (about 1.2 miles at this point). I've don't have any great pix, only a few cell phone snaps.
Mobility issues kept me from lugging anything heavier, given I had to walk from the house to the start to the finish at Mallory Square and then home (~2.5 miles).