@hogman49 Metres are linear to the amount of work you are doing, while cals are exponential. This effectively means cals are more of a “high risk, high reward”, i.e there is a lot more capacity for time separation if using cals instead of m
@damj In my opinion a 40% improvement on your open result from last year is too big of an aim, even 10% I think would be a really impressive improvement. Go easy on yourself