Ummm, what is the question that i was trying to answer....
Your question is not answerable as it is phrased. A marathon is 42.195 km, not 21.
170,851,458 by Rohnit S.
No, the World Record is 2:11.96 - Noah Ngeny of Kenya (record set in 1999)
Road races are usually run over 42.2km and the world record for this is 2:03:59, held by Haile Gebrselassie from Ethiopia. He ran this time on 28 September 2008 in the Berlin marathon.
They would run 1 km in 2 minutes 29 seconds.
The men's world record for the two mile run is held by Daniel Komen of Kenya. His time was 7:58. 61. For women the record is 8:58. 58 which is held by Meseret Defar from Ethiopia.
2:24 flat, a record considered untouchable.
2 minutes and a half per km
The world record is 3 minutes and 43 seconds. But maybe you are really physically fit and can run it that fast. If you are that good then why is the world record 3 minutes and 43 seconds and not your time of three minutes. I have never heard of you but I surely would have if you held the world record. In short, the answer to your question is no.
According to http://www.brainyhistory.com/events/1930/october_19_1930_89679.html the world record on running a kilometer is 2 minutes 23 seconds and 6 milliseconds.
Your pace is about 7.5 mph
The world's longest river is the Nile at 6,693 km. The world's second longest river is the Amazon at 6,437 km.
The men's world record for the 4x400 is 2:54.20 set by the United States at the Goodwill Games in 1998. The women's world record is 3:15.17 set by the USSR at the Summer Olympics in 1988.