Sandals are best suited for shorter walks on surfaces that don't have much litter or gravel, which tends to get picked up by any sandal design. Once used to the sandals, some walkers wear them regularly for 10 kilometers or longer walks. While trail sandals are big sellers, hikers often report they are best used for daypacking or in camp rather than when carrying a heavy backpack on natural trails. That said, many long-distance walkers on the Camino de Santiago wear trail sandals some or all of the time. It is an individual choice. You should definitely try them on shorter walks before tackling long distance walks in sandals.
The Teva Universal Premier sandal can be your go-to walking sandal throughout the warmer months. It is available in a version with leather uppers and one with quick-drying polyester webbing uppers in a variety of colors. The straps are well-padded, even underneath the rings that connect the straps. This is an important feature to reduce the risk of rubbing, irritation, and blisters that sandal straps can give you, especially on longer walks.