It’s not the number of rides or the distance, but the quality of the rides that matters, surely? For this you need to be seeking out quality places to ride your bike, not pedalling round and round some poxy forest like a hamster in a wheel. This would imply quite a lot of expenditure on OS maps and driving to far-flung parts of Britain or Europe, wouldn’t it? Scotland, Wales, Ireland and England would all feature and not just the riding but the cafes, the food, the accomodation, the pubs, the people you meet and the craic.
Another overlooked area that I’ve ridden on Polaris events is the north York moors, absolutely loaded with quality trails and genuinely lovely scenery.