Running is so fun! Have you tried the altitude training mask? Great for endurance.
No i have not ! i love to run the street at night while its peaceful 
I prefer running during the day in the heat, I feel like it helps my body build stamina better. I just make sure to hydrate.
You would love to run where i live then because it is hot as hell in Portland, Oregon
How is it running in a city? I assume there's a lot of people around!
I live in a urban area so at night there is not many people walking around , i remember my first run i tried running around the block it was a few miles i failed the first few times because i gave in but once i broke that mental barrier and did not quit i will never quit again 
I used to want to be a navy seal and I used to run for  miles on end. I then got shin splints and had to stop running for a while.
Cool, when i run after i have not run in a while my legs hurt the next day so i wait until the aching goes then i can jog every night and get no pain the next day its like i have to break my self in
Any tims on how to avoid injury? especially when running on concrete in the suburbs.
Yes be carful when you are running at night and you go down a dark path look out for stones or rocks you might trip over