Seems like all of you should run the marathon fine. You have been doing races and quality long runs for a long time.
Klim, get healthy. Go and get a massage or two to work out the kinks and or tears.
When i was running my best marathons I did not run as hard as you guys are now.
The key ingrediant for my limited success was LOVE. You need to have the love energy going in all alspects of life. This leads to confidence which leads to a great run.
BTW---Love comes in many forms and faces. Love Thyself, love the body and love others.