I had a vague recollection of looking into Precision Fuel & Hydration electrolyte replacement strategies a few years ago. As it turns out, it was a whopping 7 years ago and as it now also turns out, the company is very much into sugar as well as salt. I suspect there’s more money in sugar but we need both when doing our sport that’s for sure.
Precision Fuel & Hydration Carbs Calculator
Some of our gadgets make attempts to calculate our water/carbs usage both pre-workout and post-workout, as well as provide smart reminders or simple time-based reminders.
I have to admit to favouring simple time-based reminders unless I’m planning something especially complex. That said, Precision Hydration has an interesting and simple take on fuelling requirements with its Quick Carbs Calculators for each of its products that do what they say on the tin. Most importantly they are real-world calculators that do NOT tell you to stuff your face with the vendor’s products at such a maximal rate that you have to visit the toilet 30 minutes into the race 😉
More interesting is the planner which is more complicated and does take into account intensity, and environmental conditions, like sweat rates, likely saltiness and more. In my experience properly pre-loading with salt for a HIM did improve my performance noticeably.
Tastiness
The various potions and gels are all pretty tasty. I especially like the chews. I like SiS products as well but its chews taste too sickly sweet, whereas Prevision Hydrations are yummy and would even nicely accompany a mid-ride coffee. They’re priced more cheaply than cake too…albeit only just. #RideInflation
Prettiness
The other reason I got hold of some is that they are extremely well packaged and will look good as props in some photo shoots, providing I don’t eat them first.
My Fuelling and Hydration
I would definitely recommend you look at hydration planning with Precision Fuel & Hydration. The company’s Race Planner is pretty awesome in that regard and Andy Blow (CEO) is a highly knowledgeable and widely respected industry advisor.
When it comes to simple gels for a 60-minute run or a 2-2.5 hour ride I’d just grab some super-cheap Wiggle gels and a banana. For anything longer or more intense I’d plan more carefully and would happily use Precision Hydration as well as SiS (who also do suitably pretty packaging!)
More: PrecisionHydration.com
Note: This is not paid for but I got some free samples, which I will definitely use (or photograph 🙂 )
Last Updated on 27 January 2026 by tfk the5krunner
Small things I always use
- Garmin 90-degree charging adapter: Charges your Garmin from any USB-C cable. Essential when travelling. I use one.
- Body Glide: The blue anti-chafe stick swimmers and runners carry. I use it.
- Speedo earplugs: Fewer ear infections and no cold-water dizziness. I use them.
- Dryrobe Advance: My winter changing robe for open-water swims. I use one. A cheaper option is the AONYIYI changing robe.
- Maurten: Race fuel that stays easy on the stomach. I use them.
- Garmin charging puck: The quickest way to top up before a session. I use one.
- Injinji: Toe socks that stop rubbing, so you run more. I use them.
- Ultimate toe protectors: Stop black toenails on long runs. They work. I use them.
- Compressport R2 v2 calf sleeves: My calf sleeves of choice. I use them.
- Cellucor C4: My pre-workout before hard sessions.
- TPU tubes: Schwalbe Aerothan, Tubolito and Pirelli SmarTube. Light, tiny spares. I use all three.
- G8 insoles: Adjustable insoles that are good. I use them.
- Cycplus Cube: A 97g electric pump that gets a road tyre rideable in two minutes. I carry one. 5% off with code THE5KRUNNER.
Watches and sensors
- Polar H10: My daily driver for waking HRV.
- Polar Verity Sense: My backup arm-worn HR sensor.
- Nomad bedside charger: Charges my iPhone and Apple Watch overnight. I use it, and many of their bands.
- Train.Red: The best muscle oxygen sensor I’ve used.
- Tymewear: Accurate heart rate and reliable ventilatory zones. I use it to pace endurance rides over an hour.
- Garmin Forerunner 970: A pro-grade triathlon watch. I use this.
- Apple Watch Ultra 4: My daily smartwatch. No phone needed on rides.
- Garmin Fenix 9 Pro: I’ve just bought one.
On the bike
- Continental GP5000 for everyday riding, and Aero 111 on the front for special occasions.
- Helmets: Specialized S-Works Evade 3 for road riding, and Rudy Project Wing for TT-style races. I use both.
- Ravemen FR300: A front light that mounts under your Garmin or Wahoo. I use one.
- Wahoo TRACKR Radar: I use it on one bike and Varia on the other. They perform the same.
- Garmin Varia RTL515: Radar that warns you of cars from behind. I use this model.
- Wahoo ELEMNT Roam 3: The bike computer that’s easy to use. I use mine on most rides.
- Favero Assioma Pro RS2: Accurate power pedals that swap easily between bikes. I use this model.
Home and indoor training
- NPE Runn: Makes my basic treadmill smart, sending more accurate speed and distance to my watch and Zwift. I use it.
- Google Wifi: Keeps Zwift connected in my pain cave. I use it.
- Apple TV 4K: Zwift on the big screen. I use two.
- Google Nest Doorbell (wired, 2nd gen): My video doorbell, running in both Google Home and Apple Home. I use it.
Health, recovery and sleep
- FreeStyle Libre 3 Plus: Shows how my blood sugar responds to diet.
- hDrop: Measures my sweat loss in summer and indoors.
- Fourth Frontier Zone: Checks my heart under load in hard sessions.
- Oura Ring 5: My partner’s recovery tracker of choice.
- Kineon MOVE+: Red light therapy for niggles. It works.
- Eight Sleep: A cooling mattress cover my partner and I use nightly.
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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
