How recently do you have to have achieved your black badge if you want to enter the 300? Asking for a friend

I don't believe there is a limit (obviously I could be wrong and Stu will confirm at some point) and I always thought/assumed the rule was there to ensure whoever was riding had a good 'head' for these sorts of things

No limit. Just make sure in your own mind that your last black wasn't (a) a fluke (b) you have ridden a bike since.

No limit. Just make sure in your own mind that your last black wasn't (a) a fluke (b) you have ridden a bike since.

I'm a good example for this, got a black badge last year on little prep and no attempt to research food stops etc but weather was good and I am in the middle of a riding hiatus so will not be going for the 300 this year as hoped