I think “low carb” is the wrong way of describing it. Some training protocols implement targeted training in a glycogen depleted state, but the overall daily intake of CHO for anyone performing at a decent level is still going to be very high. They may implement this type of training more frequently in the off season but they’re definitely not cutting back on carbs when they’re racing. I’d recommend listening to the Science of Ultra podcasts. There’s lots of decent content on there.
Any particular eps?
Cheers
The ones with Dr Ron Maughan and Trent Stellingwerff are 2 of the best, but there’s quite a few decent ones on there.
I love carbs as much as @ Captain_Doughnutman, but have been experimenting with eating only fats/proteins for the LSD rides.
Although I tend to only eat decent cabs off (and on the bike - though for intensity, I use mix/the odd gel), I was concerned that during LSD ride these were fairly pointless and leading to weight gain. Knowing I’m pretty fat adapted (lab results), I switched all LSD to nuts/seeds/protein and the body fat has been coming down steadily.
Current schedule is around 20h p/w, 2x3 LSD rides (4-5h in duration) with 2 intensity sessions (VO2 Max at the moment).
Interested to hear if any others follow this approach (if so, I may start a “I 
! FAT! (and so should you!) thread”.
NOTE: I’m not Keto and don’t want to get into that discussion!!
My 2019 summer was all fasted HFLC Z2 LSD (do we use actual words anymore? 
). Never noticed a significant drop in body fat or over-all weight. I’m sure there was some kind of positive long-term adaptations, just not externally measurable.
As for fuelling w/ fats and protein…my suggestion: don’t. If you are highly fat adapted then you shouldn’t require any exogenous fuel for a 4-5hr endurance ride. Protein is not a fuel source (usual caveats) and your body doesn’t need additional fat to burn (after taking a long time to process).
Yeah, but I love food…
Also, if I don’t eat during long rides, my appetite is insatiable afterwards, negating any benefits of riding without.
Seasons (since 2017 about 20h/week cycling/running):
2017: came out of baby break, lost 10 kg before , carb centric, great race results, > 5W/kg
2018: if I just lost 2 or 3 more kilos → fasted rides (especially LSD) → worse race results, 4.8 W/kg
2019: this has to work → fasted + intermittent + low glycogen training → worse race results, 4.5 W/kg
2020: screw this all, back to fuelling the engine again → no races but back at 5W/kg again … and feeling good the first time in quite a while
if you do high volume you already reap the benefits of low glycogen. If you add a nutritional regime you easily do to much. Fuel the engine, have fun with your workouts.
I’m only 18 and have experimented with far to many complex strategies, some which went horribly wrong and led to decreases in my power. But i’m performing the best I ever have at the moment by loading on the carbs!! I can sustain high power outputs by taking in 50g of sugar water/hour. It’s led to me being able to hold 366W for 20min @62.5~ kilos… So… CARBS ARE KING!!!
Sometimes I’m glad there’s no racing. At least no racing against you! 
The sad part is my best 1min power doesn’t even break 500w 
My power curve is a straight line…
What i would do for that juicy 500w ftp 
Bert Kreischer definitely Loves carbs
Right, where’s my e bike? Surely that’s got enough carbs!
High carb all day.
Keto is crap.
Anyone here tried sweet potatoes before riding? I found it to be highly effective at being able to sustain higher power, plus better recovery. Eating half of a medium/small sweet potato 30mins before a 2-3hr ride and it was dynamite. better than any other supplement i have ever tried.
LOL, you’re 18, you could eat an old boot, and still ride all day at threshold :).
Tend to find old wellies are better 
One guy did. I think his name is @Nate_Pearson.
Before a big day I’ll sometimes saute an onion and make a sweet potato hash with it and then throw a couple eggs on top. I don’t eat this less than two hours before a ride though
On lower intensity indoor rides I’ll eat sweet potatoes as mid-ride fuel, love them that way
TRAITS
ENDOMORPH: 13%
MESOMORPH: 25%
ECTOMORPH: 63%
Definitely nailed it!