Arroyo Seco Gorge Narrows
The Arroyo Seco Gorge has some stunning terrain if you are willing to creek walk / swim. The narrows section of the route is unbeatable, and the cool water is refreshing from the heat of the day – in the summer, air temperatures easily exceed 100F. I use a wetsuit when traveling up the gorge, however not everyone does. I recommend it if you want to spend as much time in the water. Unfortunately, carrying the wetsuit out in the heat of the day is an extra burden. This is a fairly challenging route that requires the ability to swim (there are several long stretches where that is the only option), the ability to climb rock (class 4+), and some means of staying warm in the water. The water is cold year round, but on a hot summer day, there are opportunities to warm up on the rocks during mid-day as the sun reaches down into the canyon.
GPS track for this route.