It depends on the speed at which the runner is travelling.
The answer is actually in the question. 10k is and abbreviation of ten kilometres, therefore a 10k race is 10 kilometres long.
A Betta does not have a "nitrogen cycle"
forty five minutes
It takes about as long as a water cycle
hey what are you doig
45 days
It would take 1 hour 14 minutes 30 seconds.
I myself cannot cycle to the center of the earth.
One complete cycle every 28 days.
a long time
Scientists estimate that it can take a single water molecule as long as 4000 years to complete one cycle.