This is a one trailhead backcountry trail, so you're looking at an in and out walk. The time needed for this hike is roughly 2.5 hours, but of course some people walk a bit slower and some a bit faster. This area does get very dry sometimes, so do check for current fire restrictions before you go if you plan to bring a stove or make a camp fire. You spend the whole backcountry walk in roughly the same elevation zone, so you get pretty much the same conditions along the whole great outdoors hiking trail. Ano Nuevo Trail is 3.2 miles long it's a short great outdoors hiking trail. Ano Nuevo Trail is not that long but it's always good to bring some emergency supplies, you never know what could happen. This backcountry trail has a total elevation difference of 1,082 feet which is an average number.