Critical Mass: Manhattan

Bicyclists of all ilk are invited to this monthly two-hour ride around Manhattan—there’s no set route—which has been promoting a greener and more cycling-friendly metropolis since the ’90s. Don't forget lights and a helmet. Meet at Union Square North between Broadway and Park Ave South. Subway: L, N, Q, R, 4, 5, 6 to 14th St–Union Sq.