At U.S. Olympic Marathon Trials, competitors also include shoe companies NBC Sports - Misc.Olympic Trials set for this weekend in Atlanta 11AliveNike’s Offer to U.S. Olympic Marathon Trials Runners: Free Shoes The Wall Street JournalOlympic Marathon Trials - How the 1996 Games Shaped the 2020 Marathon Trials runnersworld.comSun Yang banned 8 years in swimming doping case OlympicTalkView Full Coverage on Google News