First question- is this a bad idea? The longest I've ever run is 10k and that was a couple of weeks ago...
And I only ran that out of peer pressure. A number of colleagues were descending upon the park right next to my house so I felt obliged to do it. To prepare I ran 5k, the next weekend the same, and the weekend after that 6.5k. 3 runs in total. I didn't die and that seemed like a good sign.
In all honesty the 10k was hard. It felt like a mental battle. My tendency is to waste my energy early on so I just kept thinking to myself, 'the tortoise wins the race'. All in, it took 58 minutes 30 seconds (or something very near that). You can see me crossing the finish line and my daughter cheering me on to the right 😍.
Anyway, back to the marathon. I'm doing it for a charity my neighbour runs and I'd like to not fizzle out half way through, which leads to my second question. I don't have time to run more than 3x a week. I was thinking about running 5-7k 2x a week, mostly focused on speed, and slowly increasing my distance with one long run on the weekend. What do you think?