Distance runners know that 42.2 kilometers is closest to this many miles
Many elite runners 
have marathon bests about 4.6 or 4.7 times their fastest 10k... [DOC] [TLE] Jeopary Question, MATHEMATICS - TriviaBistro.com [PAR] Jeopardy Question: MATHEMATICS - Distance runners know that 42.2 kilometers 
is closest to this many miles.