Various embodiments provide a bicycle hydration and misting system or apparatus. Example embodiments include a manual (e.g., trigger-activated) or automated (e.g., valve-activated) system that is self-contained, small, and light-weight. Various embodiments improve safety, allow convenient interchangeability of the fluid reservoir, and enable easy installation on a bicycle with or without a mounting system on the bicycle itself. Embodiments also allow the rider to select a variety of spray types, stream, spray, or mist depending on the intended use or amount of fluid desired for each release. The various embodiments provide for an improved cooling fluid delivery system of design simplicity, ease of use, and interchangeability that allows a cyclist an evaporative cooling concept safely, efficiently and conveniently, while riding in conditions of elevated or extreme temperatures.