Garmin eTrex 20x Outdoor Handheld GPS Unit with TopoActive Western Europe Maps,Black/Orange Been using this since 2013, reliable and easy to use
Nathan Men's Vapour Air Hydration Vest/Pack, Electric Blue, Large/X-Large/37-44-Inch Used since 2011, I have a 2nd one now, great battery life and displays all the info you need
Becoming a Supple Leopard: The Ultimate Guide to Resolving Pain, Preventing Injury, and Optimizing Athletic Performance Nearly 5 years of use and still going, I don't use a bladder but bottles in the front pockets
Lore of Running A decent book to give you some basic knowledge
Petzl Myo Headlamp - Grey/Orange, One Size Best book I've seen for mobility and stretching