Combine the measured amounts of water, coconut water, cherry juice (if you decide to use it), lemon juice, molasses, and salt in an iced tea pitcher or half-gallon glass jar.
To mix the ingredients thoroughly, seal the jar with its lid and shake vigorously.
Once the mixture is well combined, store the container in the refrigerator. It can be refrigerated for up to 3 days, allowing you to have a refreshing drink readily available whenever needed.
If you're planning a long run, consider drinking 16 ounces of this hydrating concoction about 1 hour before you start running.