By Tanner Garrity Marathon Sunday makes the shortlist for many New Yorkers’ favorite day of the year. It’s a perfect afternoon, usually one of the last crisp and sunny days of the year, thousands of people out exercising and raising money for good causes, thousands more cheering them on, good food and open bars once it’s all over. I was at a pub in 2019 that rang a bell each time a finisher hobbled in, decked in their medals and reflective tarps. They’d throw their arms up in triumph, then take their customary Instagrams, months of work leading to this moment. Surrounded by friends and family …