Whether you're an amateur runner, a parent with kids, or even a semi-pro. Here's a list of tips and gadgets, to help you get the most out of your tech devices during the Marathon. Pro runners participating in the longer distance runs, are advised not to carry several items, and stick to the fitness trackers to avoid being tired by the extra weight and distracted during the long run. Charge Your Smartphone: Make sure your battery is fully charged the night…