Get your knees in the breeze at any one of our 17 regional parks with dedicated bike-friendly trails. Ten of those parks offer off-road bicycling opportunities from gentle and mild paved trails to hard core, wear-all-your-armor wild mountain bike trails. Gaviota trail video. Bicyclists also love our velodrome at Hellyer Park - a paved and banked oval bicycle track that’s 1/5 mile around and is one of only four in the Western United States. Be sure to check our area closures list before plan your outing.