Round-the-Qinghai Lake race have become a famous signboard of sport in the highland of Qinghai, and have exerted great influence beyond sport itself.

“环湖赛”已成为青海高原特色的体育品牌，它产生的社会效应也远远超出了体育活动本身。

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ABOVE: On a dragon boat race in Dalvay Lake, Prince Edward Island, Canada, 4 July

上图: 7月4日，加拿大爱德华王子岛，Dalvay湖上的龙舟比赛

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Because the ice continues to dissolve, the delicate layer of ice covering the shallow lake implies that it is impossible to hold an amusing skating race.

由于冰在不断融化，覆盖在这片浅湖上的这层薄冰说明不可能在这举行一场充满乐趣的滑冰比赛。

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Another addition to the jockey wardrobe at White Turf is an oversized pair of fleecy slippers which would look less out of place on a circus clown -- vital footwear to cover riding boots while hanging around on a frozen lake before the race.

CNN: Cool racing: Horses battle on snow

First run in 1898, the Mac (not to be confused with a shorter sister race up Lake Huron) is the world's longest--333 miles--annual freshwater race.

FORBES: Windy City Sailing

His goal: to win "the Mac"--Lake Michigan's annual race from Chicago to Mackinac Island.

FORBES: Windy City Sailing