1 a long-distance running race, in which people run about 42 kilometres or 26 miles 马拉松赛跑（路程约为42公里或26英里的长途赛跑）

2 an activity that lasts much longer than expected 持续时间大大超过预期的活动: The interview was a real marathon. 这次面试真是马拉松式的。