@sergabarca: Nobody tells you that the quality of the 20% hard training is more important than the 80% you spend in “Zone 2” Hit the link in my bio for a sick deal on Ketone-IQ & while you’re there follow me on Strava to see my training for Chicago & more. #zone2 #heartrate #runnerthings #garmin #ketoneiq #runningtips #marathonrunner #marathontraining #ultramarathon #chicagomarathon #run #Running #runner #runtok #runnersofitiktok #tiktokrunclub

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Friday 25 July 2025 18:09:51 GMT