Freebase(0.00 / 0 votes)Rate this definition: In a parliamentary or semi-presidential system of government, a reserve power is a power that may be exercised by the head of state without the approval of another branch of the government.
5k race = 3.1 miles. Most beginner runners will take an average time to finish a 5k race of 30 - 40 minutes. 10k race = 6.2 miles. The typical time it takes to do a 10k race is 1 - 1 1/2 hours. Half marathon = 13.1 miles, 21.7 kilometres. A respectable time it takes to do a half marathon is 2 - 2 1/2 hours. Marathon = 26.2 miles, 41.2 kilometres. The average time it takes runners to do a marathon is between 4 - 5 hours.
How can I estimate my 5K time?. Finishing times for a 5K race (3.1 miles) span a very wide range because there's usually a mix of experienced, fast runners and beginner runners and walkers. The winner may run the 5K course in under 14 minutes, while some walkers may take over an hour to finish.