I also use the nike+ running app. I will try to add you later today if I not forget
I ran my first marathon in april. I did it in 3 hours and 50 minutes. My next one will be in october. I got a little mental dip after running it though, but now I'm slowly getting back to it and enjoying it immensely again! I try to run 50 km in a week, with a long distance (20+) run in the weekend, but yeah it really depends on my work schedule, other responsibilities, etc. I'll be happy with 175 km this month, slowly getting back to 200 km.
I run with my phone hanging on my arm and a watch just for chrono. That's it. And good shoes of course
. When I go for 20+ km runs I use a backpack for water and energy gels etc.