complete marathon

A marathon can complete a lap of 10 kms in 1 hour what is the average speed ? Pick the input data

At the end of the marathon everybody was exhausted.

You will participate in the marathon, won't you ?

Usha particpated in a marathon walk and completes the journey in 10 h. if she travels half the distance with a speed of 10 km h^(-1) and rest of the distance with the speed of 15 km h^(-1) then calculate the total distance of the marathon walk.

When I was training for the marathon, I ___________ run over 100 kilometeres a week.