“The Amazing Race” — All that panting and gasping you hear is coming from the final three teams as they chug toward the finish line in Washington, D.C. This still-enthralling reality series crowns another winner, but not before serving up some more rigorous challenges in Belfast, Northern Ireland. Phil Keoghan hosts. 7 p.m. today, CBS.

On “Revenge,” Emily (Emily VanCamp) is about to plan her next sneaky move. Meanwhile, we’re still trying to get our heads around the fact that she and Daniel (Josh Bowman) are engaged again. Weird. 8 p.m., ABC.

Can our dislike of Pete (Vincent Kartheiser) on “Mad Men” grow any more intense? We’ll see. Tonight, the slimy ad exec has an awkward run-in with a client. 10 p.m., AMC.