▁. ▁It ▁is ▁segment ed ▁into ▁ 3 6 ▁legs , ▁and ▁is ▁run ▁primarily ▁by ▁ 1 2 - person ▁teams . ▁The ▁starts ▁are ▁st agger ed , ▁starting ▁at ▁ 7 : 3 0 ▁and ▁ending ▁at ▁ 3 : 0 0 , ▁with ▁the ▁faster ▁teams ▁( based ▁on ▁their ▁applications ▁and ▁history ) ▁starting ▁latest . ▁Each ▁team ▁will ▁run ▁their ▁ro ster ▁for ▁three ▁complete ▁rot ations ▁when ▁the ▁race ▁is ▁complete , ▁so ▁the ▁runner ▁in ▁position ▁one ▁runs ▁Leg s ▁ 1 , ▁ 1 3 , ▁and ▁ 2 5 , ▁runner ▁in ▁position ▁two ▁runs ▁Leg s ▁ 2 , ▁ 1 4 , ▁and ▁ 2 6 , ▁and ▁so ▁on . ▁Tw elve - person ▁teams ▁use ▁two ▁v ans , ▁with ▁one ▁van ▁e ating ▁and ▁rest ing ▁( and ▁trying ▁to ▁sleep ) ▁while ▁the ▁other ▁van ▁is ▁running ▁its ▁legs . ▁Teams ▁of ▁fewer ▁than ▁ 1 2 ▁are ▁permitted ▁to ▁race , ▁but ▁they ▁must ▁maintain ▁their ▁order . ▁For ▁instance , ▁on ▁an ▁ 1 1 - person ▁team ▁the ▁first ▁three ▁run ners ▁will ▁have ▁to ▁run ▁four ▁legs ▁each . ▁A ▁team ▁with ▁six ▁or ▁fewer ▁run ners ▁is ▁called ▁an ▁Ult ra . ▁If ▁a ▁runner ▁is ▁injured ▁during ▁the ▁race ▁and ▁cannot ▁continue , ▁the ▁subsequent ▁run ners ▁move ▁down ▁one ▁slot . ▁These ▁rules ▁do ▁not ▁apply ▁to ▁the ▁Fre est yle ▁category ▁introduced ▁in ▁ 2 0 1 2 .