Somehow I seemed to have run a 5k or two too many. Last weekend it morphed into the European Duathlon championships. What on earth was I doing there competing for my country. All I wanted to ever do was run 5k a little bit faster. Maybe because I would never be able to run 5k alone as fast as my age-group equivalent Mo Farrah? Who knows (me! I couldn’t)
So there I was running 10k quite fast (for me) and cycling 40k (not so fast) and running my beloved 5k at the end (at a I’ve just-run-and-cycled-a-long-way-pace). For that is what a standard duathlon is. I tell you though if you really train for just 5ks then a duathlon is quite hard. No really an English-understated QUITE hard (ie bloomin’ hard)
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Last Updated on 13 December 2025 by the5krunner
My favourite kit and nutrition
- Maurten — the race nutrition trusted by elite athletes. Gels and drink mix engineered to be easy on the stomach.
- Garmin 90-degree charging adapter — the small adapter that keeps your charging cable tidy at the stem. Essential for race day.
- Garmin charging puck — the fastest and most reliable way to top up your Garmin before a session.
- Ravemen FR300 — front light that mounts directly under your Garmin or Wahoo head unit. Keeps your bars clean and your beam pointed where it matters.
- Garmin Varia RTL515 — radar rear light that alerts you to vehicles approaching from behind. Pairs with your Edge or Garmin watch.
- Stryd — the footpod that brings running power to your Garmin. The single most useful running upgrade I have made.
- Favero Assioma Pro RS2 — the power meter pedals most serious cyclists end up choosing. Accurate, easy to move between bikes.
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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. ID
