It’s not often that you’re allowed to run — legally — across the imaginary line diving Canada from its neighbor to the south. But that’s just what folks who participate in the Niagara Falls Marathon get to do. The course starts in Buffalo, NY, in front of the Albright-Knox Gallery, and from there crosses the Peace Bridge, follows the scenic Niagara Parkway and concludes just in front of the majestic Falls. NB There are shorter runs held on race day as well as Health and Fitness Expo (Friday-Saturday). Learn more at:  www.niagarafallsmarathon.com