Remember, hiking can be strenuous and you should always plan ahead by packing enough water and food to get you through the hike. Colorado has a very dry climate and you can go through water fast! I often bring a little extra in case I break my leg or something and have to spend the night out there! While getting stuck out over night is unlikely, since good cel service is available throughout the area, I always like to plan for the worse.
Also, you should know that there are bears, coyotes and mountain lions in them thar hills. They could eat you, so it’s important to learn about them. It is also good to take slow friends with you. Seriously though, these animals are out there. Lions and bears are infrequently sighted, but coyotes are pretty common on some of the eastern trails.