You start by running 5 km, move up to a 10 km, then a half marathon.

你先跑5公里，再跑10公里，然后跑半程马拉松。

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Tell everyone that you are running a half marathon! It helped me when people would ask me how my training was going.

告诉每个人你将参加半程马拉松！别人询问我的训练进度对我是有所帮助的。

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From 2009 to 2010, the number of half marathon finishers grew an incredible 24%, from 1.1 million finishers in 2009 to nearly 1.4 million finishers in 2010, according to Running USA.

根据美国跑步协会的调查，从2009到2010年，跑完半程马拉松的人数增加的惊人，大道24%，从2009年的1100万人到2010年的1400万人。

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The Great North Run is the world's most popular half-marathon road-running event, with more than 47, 000 competitors of all abilities.

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Then, one day when they were running a half-marathon together, Phil suffered an aneurism and was rushed to the hospital in a coma.

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After running my first half-marathon I was hobbled for six months with achilles tendonitis that required a trip to a sports medicine doctor and multiple physical therapy sessions.

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