Isotonic Drinks. I love them. One an hour or so before the race saves me having breakfast and tops up any stuff in my body that might be missing. And I quite like Orange flavour Lucozade sport’s taste as well.
They are quite calorific so don’t have them too much in training.
Last Updated on 13 November 2025 by the5krunner
tfk is the founder and author of the5krunner, an independent endurance sports technology publication. With 20 years of hands-on testing of GPS watches and wearables, and competing in triathlons at an international age-group level, tfk provides in-depth expert analysis of fitness technology for serious athletes and endurance sport competitors.
