2 marathons in 3 weeks

Talented but still strange

So what.

Agreed

Best pizza could be from anywhere - geographic don't make the pizza

Me too

Me too

Me too

Same here.

My thoughts are "why would you race one marathon 3 weeks after the other when you could just enjoy Venice without the marathon". And "why are you running multiple marathons on such low volume"

I'm not a big running expert, but knowing that marathons actually raced take a lot of time to recover from and that marathon training should have high volume are super basic stuff.

With that low mileage and your lack of marathon experience, I would not do this. Just focus on Lisbon and enjoy your vacation in Venice. See if there is a shorter race you can do at the Venice Marathon. they have a 10k and half marathon. Doing both marathons is recipe for pain and possibly injury. There's no point in unnecessarily torturing yourself.

If you aim for at least 20 min slower in Venice, it could work.

This topic interested me as i did Manchester uk marathon on 14th April but caught a cold 2 days before and wondered if i could of gone quicker given i felt a little ill . im 56yrs and mainly do triathlon , Prep was 36miles per week for 8 weeks up from my tickover milage of about 16 per week for years combined with alot of cycling .( i generally get injured if i go over 40 per wk )

Manchester plan was at best run 3,20 if every thing went perfectly but i struggled from 17 and finished 3,23. my pace was sensible but i slowed simple as that ,last miles were very uncomfortable.

5th May 24 - 3 weeks later i ran Copenhagen. all my running friends said i would burn at 17-18 miles ,this worried me and i thought it was a foolish idea ! but it wasn't the case , i was rock solid until 23miles i got a pR of 3,21 . and above all proved a lot of people wrong, i was super happy and I will treasure that medal .. The 2nd race settles your mind ,you respect the distance more. You are aware of your pace and know to never dip under it " even by a few seconds ".

After Manchester i rested for 5 days , then ran 28 miles in the middle week with(2 x 9 milers at mara pace 48 hrs apart ) then tapered again with just 6 miles easy .

i used identical nutrition btw and Denmark was sunny 15 degrees V Manchester cloudy 6 degrees .

I hope this helps .

(still wondering if i will get a sub 3;20 in this life )

do both of them, why not? you probably won't be fully recovered for the second one, but you won't be too far off, and it's not like you're trying to win the thing or get any age group prizes with your goal times, so who cares if you crash and burn, just walk it in from mile 20 if you have to.

You will be fine. You should see a huge drop-off in performance from the marathon you plan to compete in vs the one you will be treating as a training run. Go easy during the period between and remember there is no shame in walking to get to the finish line.