I live on the Costa del Sol and regularly cycle along to coast from Torre del Mar towards Malaga on Sunday mornings. The route is very popular with "enthusiasts" and club cyclists, on their road bikes, and leisure cyclists (like myself), on hybrid or mountain bikes. I don't believe I've spotted any enthusiast not wearing a helmet, and I guess that the few leisure cyclists who risk their lives without one are either occasional users or are on hired bikes. It amazes me that some people seem to think that, because they are on a track where they are not mixing with vehicular traffic, it is safe to ride without head protection. I once fell off my bike on such a path and, had it not been for my helmet, could have suffered a serious head injury.