Park at Cloyden & Paseo Del Mar. To shorten the trail take the steep hill down. This 4.6-mile out-and-back trail takes you along the coastline and ultimately to the site of a historic shipwreck. It’s considered a moderately challenging and very rocky route. Check the tides and go when it’s low to avoid getting too wet. Wear sturdy shoes as this very rocky trail is slippery and not for the faint of heart.