The game included three events: full marathon, half marathon and 5 kilometer mini marathon.
比赛包括全程马拉松、半程马拉松和5公里迷你马拉松三个项目。
It's half a kilometer away from here.
离这儿半公里远。
Then he and his wife entered a five-kilometer race.
后来，他和他的妻子参加了5千米的比赛。
His goal was to extend the 20 meters to a kilometer.
他的目标是从20米延长到1千米。