An Athlete took part in a 2.5km fun run he didn't finish the race Giving up at 800 metres before the finishing line because of a stitch. How far did he run?

Firstly, the water in the dams hold gravitational potential energy as they are above ground level. the gravitational potential energy is then transferred to kinetic energy as it falls, spinning the turbinethe turbine then spins the generator, which is a large magnet surrounded by metal coils. by doing this, the generator generates electricity. in this action, the energy transfer taken place is kinetic to electric energy

I’m not sure about this question