Louisa, a good 'milestone' to aim for in your training schedule is ydt's Arenig Fawr race on the last weekend in September ( 28th, I think, this year ). It is all flagged and there is usually a 'sweeper' ( yours truly ) at the back of the field, picking up the flags and making sure that no-one is left on the hill. 2007 we shadowed a young American girl around the course who was having her first fell race - everyone has to start somewhere. There are some really fit super stars in fell running - Rob Jebb, Lloyd Taggart, Simon Bailey & many others - but it is not an exclusive club. Just compete & complete - beat the hill and you are a winner. Does not really matter if someone else beats the hill in a faster time than you!