There isn’t much Joan Samuelson hasn’t seen as a runner, and that includes Bloomsday, but the 1984 Olympic gold medal marathoner admitted she was a little awestruck Sunday morning. “Hey, just the fact I can get out here and compete and run, I’m not complaining,” the 54-year-old Maine native said. “This is only my second time here. It’s like sleep deprivation as a young parent: You forget what it’s all about until the second one comes around.