Heartbreak Hill (the hill in the Boston Marathon)

Heartbreak Hill is a notable incline in the Boston Marathon, located around the 20-mile mark of the race. It's part of a series of hills called the Newton Hills, and while it’s not the steepest or highest, it's infamous for its timing and the fatigue runners experience. At this point, many athletes are already physically exhausted, making the uphill climb feel particularly challenging. The name signifies not just the physical struggle, but also the emotional toll the race can take, symbolizing a moment where many runners confront their limits as they strive to finish the grueling marathon.