130k ride . Prep for chase the sun

So, whilst I was Recovering last year I thought it would be a good idea to have a goal. So I booked myself a place on Chase the Sun South . This is a 330k ride in a day ie. Dawn til dusk. Having just managed a 130k ride this weekend I have no idea how I’m going to do , tough does even begin to describe how hard this will be 😳.