race walking       
noun [ U ] (also racewalking, race-walking) uk/ˈreɪs ˌwɔː.kɪŋ/ us/ˈreɪs ˌwɑː.kɪŋ/
 竞走(比赛)
the sport or activity of walking very fast
  Walking can be either a leisurely pursuit or a competitive sport, also known as race walking. 步行既可以是一种休闲方式,也可以是一种竞技的运动——竞走。 
 I used to love running but recently I have got into racewalking. 我以前喜欢跑步,但最近却喜欢上了竞走。 
 - More examples
 - I usually do a mix of race walking at a 11- to 12-minute-mile pace, and easy running at about an 8- to 10-minute-mile pace.
 - Race walking has been an Olympic sport since 1908.
 - That year, the country's only Olympic medal came in the sport of racewalking.
 - USA Track & Field is the governing body for track, long-distance running and race-walking.
 - Engage in regular, vigorous, load-bearing exercise (lifting weights, jogging, racewalking, aerobics) every day for a minimum of 30 minutes.
 - I use racewalking techniques to go at a 12-minute-mile pace or faster.