Training for first marathon going well so far. First ever 20 miler, done in 2h 45, so I'm guessing my target of 3h45 is achievable. 7 weeks to go....
I'd say so, would have an hour to run a 10k on top of that training run to do it.
Good luck.

I seem to remember your doing the Windermere Marathon?
I was going too but not this year unfortunately, maybe Amsterdam or Chester myself in October.