A Rider Setup captures your bike and rider positions so the optimizer can simulate realistic speed, power, and time. Create one setup per real-world configuration you plan to use (TT vs road, different gearings, etc.).
Rider Profile: Make sure your profile (weight & height) is filled in: Your account → Rider profile → Update profile, or via the Rider profile link in the Get ready card on the start page.
Units: You can switch units anytime from the left sidebar (Quick settings → Metric / Imperial) or in Your account → Preferences → Units.
Limits: The number of rider setups depends on your plan (see Quotas & limits on the start page and Plans, trial & credits 💳).
Open Rider setups
Left sidebar → Your collections → Rider setups → Create new rider setup (top-right). You can also start from Create rider setup on the start page.
Name this rider setup (required)
A default name based on your name is filled in. Give it a clear name, e.g., “Road – deep wheels”, “TT – race day”.
Confirm the Rider profile
The Rider profile card shows your name, weight and height. To change it, follow the account settings link.
Bike setup
Bike type dropdown (fixed options): Triathlon, Time trial, Road race, Road endurance.
Bike weight [kg] (pre-filled with a default for the bike type).
Review positions & aero table
Columns: Rider position, Estimated CdA [m²], Speed range [km/h].
Road bikes: Hoods and Drops.
Triathlon / Time trial: Base bar and Aerobars.
CdA is estimated automatically from your bike type and rider height (“Estimated default values for your bike type and rider height.”).
Speed range defines in which speed range the rider uses which position. When the rider's speed drops below the threshold speed, they switch from the more-aero position (Aerobars / Drops) to the less-aero position (Base bar / Hoods). The default threshold is 20 km/h.
Customize (optional)
Toggle Custom positions to type in your own CdA and threshold speed (e.g., from wind tunnel or track testing).
Toggle Custom gearing to enter your Chainring(s) and Cassette range.
Save
Click Save (bottom-right). It is enabled once all required fields (name, bike weight) are filled in. If you came from an optimization, you're taken back there with the new setup selected. If you leave with unsaved changes, you'll be asked to confirm.
Turning Custom positions OFF resets CdA and speed range to the estimated defaults. Turning Custom gearing OFF resets the gearing to the default for the bike type. Changing the Bike type also resets bike weight and positions (unless Custom positions is ON) and gearing (unless Custom gearing is ON).
There are no minimum/maximum checks on CdA or speed. Use these guideposts to avoid unrealistic inputs:
Speed range / Threshold speed (Position 2 → Position 1): 10–30 km/h (6-18 mph)
Road: 18–25 km/h (11-16 mph) is a sensible starting point (Drops → Hoods or Aerobars → Base bar).
CdA [m²]: 0.19 – 0.5
The faster position must have a lower CdA than the slower one, otherwise the simulation uses the lower CdA position.
If you’re unsure, keep the estimated values, run an optimization, then check Sensitivities on the results screen to see which parameter moves your time most.
Include bike + purpose: “Road – climbing,” “Road – deep wheels,” “TT – race day.”
For wheel/tyre comparisons you don't need separate setups: an equipment optimization can compare Wheel options for one rider setup.
Keep a “baseline” setup you rarely edit; use Duplicate in the rider setups list when testing changes.
CdA inputs are greyed out → Turn Custom positions ON.
My custom values are gone → Custom positions / Custom gearing was turned off or the Bike type was changed; both reset to defaults.
Results don’t match feel → Recheck Bike weight, units, and CdA range; adjust threshold to reflect when you actually sit up.
Can't create a new setup → You may have reached the rider setup limit of your plan. Delete an existing setup or upgrade.
Save is disabled → Fill in all required fields; “Missing required inputs.” tells you something is missing.