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Triathlon · Level 8

Expert

5 sub-levels · 50 tests · 500 facts · updated 12 October 2026

Level 8 is technical mastery: cycling aerodynamics and physics, tyre, wheel and drivetrain engineering, swim hydrodynamics and equipment, power-based race execution, and the science of sensors and measurement.

Sub-levels

Sub-level 8.1Cycling Aerodynamics and PhysicsThe physics behind bike speed: the power equation, air density, CdA in numbers, boundary layers and surfaces, how drag is measured, drafting, climbing and gradients, wind, kinetic energy and speed-power calculations.10 tests · 100 factsSub-level 8.2Tyres, Wheels and Drivetrain EngineeringThe engineering of what turns power into speed: rolling resistance in numbers, pressure and vibration, tyre construction and sizing, rims and tyre shape, wheel aerodynamics, chains and lubrication, gearing and…10 tests · 100 factsSub-level 8.3Swim Hydrodynamics and EquipmentThe physics of moving through water: drag in water, buoyancy and body position, wetsuit science, swimskins and suit rules, propulsion, measuring drag and force, drafting, currents and navigation, streamlining and the…10 tests · 100 factsSub-level 8.4Power-Based Race ExecutionRacing with power at expert level: how normalised power and TSS are calculated, race targets by distance, critical power and W prime, W prime balance and surges, durability and the power-duration curve, pacing…10 tests · 100 factsSub-level 8.5Sensors and Measurement ScienceHow to trust the numbers: validity, reliability and error, running power, core temperature, continuous glucose monitors, muscle oxygen sensors, sweat testing, lactate measurement, wearable heart rate, satellite and…10 tests · 100 facts

Written from

Peer-reviewed sports engineering and physiology literature, with published test data and standards for settled facts