Best Train Red Discount 2025: 30% Off Course + Sensors – Cyber Monday

train red cyber monday 2025

This Cyber Monday 2025 offer ended on 1 December 2025. Code THE5KRUNNER still gives 10% off Train Red sensors at Train Red. For current models and prices, including the new FYER PRO, see my Train Red review.

Buy Train Red FYER 2.0, FYER PRO and PLUS 2.0 muscle oxygen sensors

Train Red FYER 2.0, FYER PRO and PLUS 2.0

Muscle oxygen (SmO2) sensors for Garmin, Wahoo and Suunto. 10% off with code THE5KRUNNER.

$817 to $2,335
£612 to £1,750
€699 to €1,999
Order now logo Direct from Train Red

Best Train Red Discount 2025 – Up to 30% Off (Cyber Monday Live)

★ The absolute best Train.Red discount right now is 30% off the full course ★

10% off 1 sensor • 15% off multiple sensors • 30% off full course

Ends Dec 1 – discount auto-applied at checkout

FYER 2.0 + App

€562.50 (10% off €625)

Most popular muscle oxygen sensor

Buy Now – 10% Off

Train.Red PLUS + App

From €1,296.25 (15% off €1,525)

Advanced multi-sensor system

Buy Now – 15% Off

Set of 4 FYER 2.0

€2,125 (15% off €2,500)

Best value for teams/coaches

Buy Set – Save 15%

Full Train.Red Course

30% OFF – BEST DISCOUNT

Complete SmO2% training education

Get Course – 30% Off

Train.Red FYER & PLUS are the most accurate consumer muscle oxygen (SmO2%) sensors available. Used daily by pros and serious athletes for warm-up optimisation, threshold testing, and recovery monitoring.


→ Shop All Train.Red Deals – Best Discounts Live

Offer ends Dec 1, 2025 • Prices include VAT • Free shipping over €100

Last Updated on 3 October 2026 by tfk the5krunner


Small things I always use

Watches and sensors

On the bike

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



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