Marathon training vs Daily Calorie intake

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  • BrianSharpe
    BrianSharpe Posts: 9,248 Member
    susie383 wrote: »
    I need some advice on whether I'm eating enough to sustain my marathon training. I train 6 x a week which includes 2 gym sessions of approximately 90 min each and then 4 runs, one of which is usually around 2 hrs or more long.
    Based on the above and me wanting to lose 0.5kg a week, MyFitnessPal says I should be on 1200 calories a day. I've been sticking to this for a while but have started feeling really tired and have had 4 colds since Christmas and I'm wondering if the low calorie intake has something to do with this???

    Doing a 2hrs run on 1200 cal? No wonder you're feeling tired.

    You need to fuel those runs, to get an idea of the additional calorie expenditure from your runs multiply .63 x your weight (in lbs) x distance (in miles) (the approximate metric equivalent would be about .86 and substitute kg & km)

    I've been known to eat 1200 cal for breakfast on my long run day! You'll really need to fuel the longer runs as you approach full marathon distances, don't count too much on losing much weight during the later phases of your training (and don't be surprised if you put on a kg or 2 if you carb load leading up to the race - a gram of glycogen bonds with 3g of water.

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