There are many tools online you can access for things like pace, hydration, calories burned, target heart rate, etc.
A fantastic website to refer to is http://www.runnersworld.com/tools
Often people look over the most important tool and that is the proper running shoes. Wearing the wrong running shoes can affect not only your feet, but also your legs, back and all the way up to your neck. Many stores will help you select the proper running shoes for your gait, pronation, arch support, and running style and will do it for free. Yes, running shoes can be expensive but it’s definitely cheaper than medical bills.