Thanks for the heads up. I'll add it to the rules that BW etc are illegal to race on and that we do not advise doing so... think that will work?
No, unless you have marshals making sure this is adhered to. Take the example of old quarries - they can put 'No Climbing' signs up everywhere, but would still be liable if they couldn't show that they had taken measures to prevent someone from trying to climb.
Komoot will be your friend for planning your route before and during the race
- from the website.....
If I, or a family member were injured in this as or by a 'racer' I might be inclined to pursue the organiser for reparation/compensation, along with Komoot, if the app was proved to have recommended the route to 'race' on, given the legislation outlined above.
I can't see any insurer giving any degree of public liability cover for this.
As above, not meaning to sound grumpy, but I'd be really concerned for you personally as the organiser, and for the 'shitstorm' that could result from a serious incident/costly legal action. Have a look at what happened with enduro/DH events after the spectator tragically died in Wales a few years ago - and that was someone who had chosen to go and stand nearby to watch at an event which was found to be well risk assessed and managed.
https://www.bbc.co.uk/news/uk-wales-48776346
You could be seen to be encouraging riders to race for over 24 hours, without rest, across any public ways, without any real control of them. Why offer a cash prize anyway?