Wahoo supports CORE (GreenTEG) and Train.Red
Update: New Core 2 Review, a detailed look is now live
Wahoo has just released public support for displaying core body temperature on all ELEMNT bike computers from a GreenTEG CORE sensor, which is supposed to give accurate CORE TEMP readings when paired with a heart rate monitor using its nifty algorithms.
There’s not much more to add other than it pairs in the usual way and lets you add new metrics from the following list of seven: current Body Temp, Average (total, lap), Maximum (total, lap), and/or Minimum (total, lap)
For quite some time, Wahoo has also supported Muscle Oxygen metrics and now the train.red sensor is an option there in addition to Moxy. Moxy is the more recognised incumbent and produces absolute haem values, Train.Red claims that 3rd party research shows that absolute haem values are less accurate than the relative haem values it shows. Train.Red also show much more frequent data than Moxy, but it’s currently too frequent for the FIT spec to accommodate!
Take Out
Garmin will soon add native temperature support via an updated ANT+. It’s a good job as if you have a Garmin watch you are currently limited to two CIQ data fields as a means of connecting to more exotic sensors. With the increasing number of novel sensors (supersapiens, CORE, Engo 2) it just makes life easier for me and others if they can be linked to a Garmin watch through standard ANT+ compatibility.
The CORE sensor itself will remain one of peripheral use, limited to research, pros and super keen amateur athletes looking to acclimate to hotter climes for important Summer races.
Similarly, muscle oxygen looks set to remain a sensor destined for the same kind of audience, despite it perhaps having the potential of wider, consumer-grade usage.
Core Body Temperature support on latest Garmins ..AND Apple Watch
Last Updated on 22 September 2026 by 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.
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- Garmin Varia RTL515: Radar that warns you of cars from behind. I use this model.
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- 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
