name: Drag race
description: >-
  A standing-start kilometre on a dead-flat road, for testing that the gears and
  the resistance actually do something. Nothing about it is a workout: it is the
  shortest route to the two questions that matter. Start in the bottom gear from
  a stop and wind it up — every shift should land under the pedals immediately,
  and holding the same gear should get harder as the speed rises, because drag
  is the only thing resisting you on the flat and it grows with the square of
  speed. If shifting feels like nothing, or the load never builds, the control
  writes are not reaching the trainer.

  Flat is deliberate: on a gradient, gravity swamps everything and a broken gear
  ratio still feels like a hill. With no slope, the load you feel is the gearing
  and the aerodynamics, and nothing else.

  Distance-based, so it ends when you have covered the kilometre rather than
  after a fixed time — which makes the elapsed time your score. Loops, so you
  can go again in a different gear and compare.
looping: true

blocks:
  - type: segments
    segments:
      # The whole course. One flat kilometre; the gears supply all the variety.
      - distance_m: 1000.0
        gradient_pct: 0.0