The difference in Watts between the forecast and windless conditions expressed as a percentage.
Minus - Tailwind/favourable conditions
Zero - Neither favourable or unfavourable
Positive - Headwind/unfavourable conditions
New! Segment Filter
Find the segments you are most interested in. By headwind/tailwind, distance and more.
Time Prediction/Moving Time
Click the to see how changes to power, aerodynamics and weight affect your time.
Take a guided tour
View the twists and turns of your route.
Tap anywhere on your route, lots more data!
View Segment Effort data, try playing back an effort!
Predict your time
Discover how fast you'll be in the current weather conditions. Experiment with power, weight, CdA and more.
The difference that your last Virtual Rider change made to the overall time.
Your CdA is how much drag you produce on your bike. Reducing your CdA will increase your speed for the same power.
Dirty or Loops mode?
Choose between our two methods of CdA calculation here > Aero
For general rides choose the Dirty option, this will attempt to filter noise from your CdA caused by braking and other external factors. When analysing a time trial or an aero field test choose Loops Mode.
To be accurate your CdA calculation relies on you correctly setting your Virtual Rider's Weight, Rolling Resistance and Drive Train Resistance.
Design a Power Plan
Discover the fastest pacing strategy or create intervals for your Virtual Rider to follow when out training.
Unlock with Premium
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Become a Premium Member and have instant access to unlimited weather data. See all efforts, filter by date, see your friends weather and more.
Use the Segment filter to reveal the most favourable Segments on your route or activity.
Speeds not adjusted for shear
Free to try! Play segment
Include a schedule stop in your forecast. Simply enter the length of time you plan to be stopped for.
Time Stopped (Hr:Min:Sec)
Report a road hazard and help you and fellow cyclists stay safe. Please ensure you have selected the nearest point to the start of the hazard and that the route is travelling in the correct direction for the hazard.
Out and back courses can be offset to separate the Wind Lines. Pick the side of road and distance to offset.
For the best results pick a landscape that would describe the locality of your course. This is used to adjust the wind speeds for wind gradient/shear. This is the slowing of air flow due to surface frictions.
As default your starting speed will be estimated using your performance settings. If you are starting this course from stationary select 'Zero'.
Appearance of Charts and Map
Your Virtual Partner
Battle your Virtual Rider on this route. Your VP will suffer the same headwinds and hills that you do!
Drag file onto your Garmin into the folder 'Garmin > NewFiles folder'
On your Garmin select your course from the Courses menu.
Ensure Virtual Partner is a Page on your Garmin
Have fun with your VP!
N.B. Please note this is a BETA feature and that the VP may not include turn by turn directions on some devices. Your VP will not adhere to junctions, traffic lights and road conditions. Please ride safely.