If you choose marathon running shoes that fit poorly, you are setting yourself up for risk of injury.
I remember training for my first marathon in a pair of stark white Reeboks. Sounds good? It wasn't. They were super high heeled aerobic shoes with no bounce or flexibility to them. It was with these marathon training shoes (if you want to even call them that) that I experienced my first black toenail!
I know better now. My dad took me shopping for new shoes a couple weeks before my first marathon. I picked out some (what I thought I the time) were snazzy green Champion trainers and ran an injury free race.
Thinking back I know I should count my blessings. I could have received a lot worse than a runners toe!
As you can see these shoes are debating amongst themselves on which is the best, which will carry their runner the farthest and fastest. Don't become overwhelmed by all the different opinions you will get from other runners! You are on a quest for the best shoe for YOU!
And a poor pair of shoes will only lead to discomfort, frustration and injury.
Read this section on shopping for a running shoe. There are some great tips that will make you aware of what to look for and what to avoid.
Keep in mind that the more cushion your shoe has the less amount of stability it offers.
If you are experiencing chronic pain and injury, I strongly, strongly suggest re-evaulating your shoes and transitioning to more minimalist running shoes.
Throw away your marathon running shoes after putting 300 to 500 miles on them. (Or record the miles that you logged with them, write it on the bottom of the shoe with a marker and place them on your running shoe walk of fame!)