Best Pre Workout for Fasted Cardio and Endurance Training

1 month, 4 weeks ago Pre-Workout & Energy Aids
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MarathonMick Guest
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Feb 19, 2026 09:17

I am training for my first marathon and I do a lot of my runs early in the morning in a fasted state here in the UK. I am looking for the best pre workout for fasted cardio and endurance training. I want something that gives me sustained energy without causing any stomach issues on my long runs.

I am not looking for a massive stimulant hit as that usually makes my heart rate spike too much during cardio. I am more interested in ingredients like BCAAs, electrolytes, and maybe some low dose caffeine. I want to keep my muscle mass while I am doing all this high volume running.

What do you all use for your cardio sessions? I have heard that some people swear by fasted training but I find I need a little something to get me moving at 6am. If you have a favorite endurance focused supplement please share it!

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