In reply to Jackob:
> Most pitches in the lakes are no more than 20m.
Not that easy to say if this is correct but I suspect not. Although it's rather irrelevant to the discussion (or possibly what you wrote isn't what you meant). What's pertinent is the length of the LONGEST pitch on a route, the length of other pitches is much less important.
Using Lake District Rock, 2005 edition (not including the sport routes at St Bees) as a representative sample of routes, only 20% of them have pitches no more than 20m.
However what is extremely interesting is that 70% of routes have pitches of no more than 30m and only 7% have pitches over 40m.
As such, the suggestion of folding a 60m (or 70/80m) sport rope in half is actually a perfectly reasonable option for the majority Lakes of routes.
Post edited at 21:20