101 uses for a mobile!

[XRunner]

I am heading up the organizing of the skyline racefor Dark Peak. I am also a member of the local mountain rescue team.
I know from years of experience, that having a mobile at the scene of an incident before MR or others emergency services can attend makes a massive difference, enabling the incident to be dealt with quickly and efficiently.

The nanny state.

You could fit all runners with movement and position transmitters and then go and seach for anybody who is stationary for a period of over two minutes.... just in case they are unconsious. This would also save valuable minutes.