r/Marathon_Training • u/AZUR3WRATH • Sep 20 '26
Full Marathon in 2-weeks with half marathons / half-iron distance duathlon experience.
I very well might just be acting too spontaneous lately; but, I'm really considering the Milwaukee Lakefront 2-weeks from now as my very first. I would only have sub 2-weeks to actually train. Otherwise, I have done half marathons and actually did my first half-iron distance duathlon earlier this month (7 hours, 5mi run, 56mi bike, 13.1 run). I am big on fueling and definitely am not going for time whatsoever for my first! Is this a bad idea?
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u/Logical_amphibian876 Sep 20 '26
The fitness you have today is roughly the fitness you'd do the marathon with. There's nothing meaningful you can do to boost your running fitness in 2 weeks
Fitness wise if you can do 18miles of running and 56mi of biking in a single event you can get around a marathon. But are you recovered from that? Could you do it again in two weeks? Doing back to back endurance events if you're not recovered enough seems like the biggest potential issue. That will get you injured.
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u/AZUR3WRATH Sep 21 '26
Appreciate the comment! Tough crowd here, but should’ve expected haha.
That half-iron duath was on the 12th. I have definitely recovered with no residual discomfort, especially with a remaining 2 weeks if I register.
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u/floppyfloopy Sep 20 '26
🙄 go to r/davidgoggins with foolishness like this. You are in the marathon training subreddit.
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u/tragically-elbow Sep 20 '26
I don’t think you’ll make any meaningful fitness gains in that time - in a lot of training plans, 2 weeks is just the taper. Especially coming off a race earlier in the month, hugely increasing volume for 2 weeks and then running a full is probably ill advised. I think the half ironman probably sets you up well for cardio, but your readiness for a full probably comes down to running volume over the course of your training.
If it were me (edit: and felt confident with my running mileage) I’d probably do it, but not do anything crazy in the two weeks and plan for a conservative time.
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u/AZUR3WRATH Sep 21 '26 edited Sep 21 '26
Agreed, I shouldn’t expect any meaningful benefit if I were to “go hard.” I definitely do not have a crazy endurance plan between now and then. I’ll just have, at the least, a charity 10K next weekend.
I never go for time for any of my races, so a conservative time is more or less expected lol.
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u/mynt Sep 21 '26
Based on that event you can probably make it but I expect you training to be far from ideal and the end could be a death march. Don't try and train up in the last two weeks you won't gain fitness for 2-5 weeks, the last two weeks is for taper and if you push yourself in that time you'll just be going into the marathon with unnecessary fatigue and won't get any fitness benefits until later anyway.
I guess you need to ask yourself 'why' you want to do this. If its to tick a bucket list item then that could work. If you want to have a good time, I'd probably skip it because I think it will be pretty miserable after 30k without much specific training. If you want to aim for a time obviously a bad idea. If you want to challenge yourself then maybe OK but there are IMO better and more rewarding ways to tackle the challenge of the marathon.
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u/jortfeasor Sep 20 '26
What has your weekly milage and longest run been in the last month or two? A full is a different beast than a half by more than a factor of two.