A tailwind out can mean a harder return
An out-and-back can feel easy while travelling with the wind and very different after turning around. The scorer does not calculate route direction or the effort needed to maintain pace. A forecast mean wind also does not capture every short gust around buildings or open ground.
Use the gust input to understand the application’s caps, then inspect the actual route. A towpath, seafront, bridge and sheltered residential loop are not equivalent simply because they share the same town forecast.
Do not turn the number into a performance prediction
A lower weather score cannot tell you how many seconds a kilometre will change. That would require a different model and individual information. Keep effort and the return plan flexible rather than trying to make a forecast score justify a target split.
The tool also cannot inspect fallen branches, debris or temporary closures. Strong-wind warnings and visible damage are independent reasons to change the route. A short familiar alternative may preserve the purpose of the session without relying on the most exposed section.
Worked examples from the existing scorer
These complete hypothetical hours run through the same scoring functions used by the live tool. They are not observations or forecasts. The displayed effective score includes any cap.
| Example | Effective score | Verdict | Model reasons |
|---|---|---|---|
| Gusts 40 km/h | 88/100 | GO | windy |
| Gusts 48 km/h | 64/100 | MAYBE | windy · MAYBE cap |
| Gusts 60 km/h | 40/100 | NO-GO | strong gusts · NOGO cap |
Exact example inputs and units
temp and feels: °C; wind and gust: km/h; precipitation: mm/h; visibility: m; rain probability, cloud and humidity: %. Weather code is WMO; UV is an index. Pressure, where shown, is context in hPa and does not affect this scorer.
[
{
"example": "Gusts 40 km/h",
"inputs": {
"temp": 15,
"feels": 15,
"precip": 0,
"pop": 0,
"wind": 10,
"gust": 40,
"vis": 20000,
"code": 0,
"cloud": 10,
"humidity": 60,
"uv": 0,
"pressure": 1010
}
},
{
"example": "Gusts 48 km/h",
"inputs": {
"temp": 15,
"feels": 15,
"precip": 0,
"pop": 0,
"wind": 10,
"gust": 48,
"vis": 20000,
"code": 0,
"cloud": 10,
"humidity": 60,
"uv": 0,
"pressure": 1010
}
},
{
"example": "Gusts 60 km/h",
"inputs": {
"temp": 15,
"feels": 15,
"precip": 0,
"pop": 0,
"wind": 10,
"gust": 60,
"vis": 20000,
"code": 0,
"cloud": 10,
"humidity": 60,
"uv": 0,
"pressure": 1010
}
}
]Planning bands and the limits of the number
The existing model starts at 100, subtracts its condition penalties and applies critical caps. GO is 70–100, MAYBE 45–69 and NO-GO 0–44. A MAYBE cap limits the effective score to 64, and a NO-GO cap to 40. These are application suitability bands, not certified safe operating limits.
Rain branches are alternatives: matching probability, intensity and weather-code triggers do not mean adding the same rain penalty repeatedly. Separate factors can combine. A cap prevents benign temperature or dry weather from cancelling a critical flagged condition. Use the reasons beside the result to understand what changed.
The model requires complete numeric weather inputs. Missing visibility, rain probability or another required value returns Insufficient data; it is never filled with an invented favourable value. Local warnings, closures, equipment instructions and actual observations can change your decision even when the model returns GO.
Read the full running methodology and thresholds. The model and these examples were cross-checked on 18 October 2026. No physical field-test or safety certification is claimed.
Equipment and an alternative plan
Select a route with a practical return and follow local wind warnings. Secure loose items and remain visible where traffic is involved. If exposure or debris makes the route unsuitable, postpone or use an indoor alternative; a windproof top does not remove a critical gust cap.
Questions about Running in wind: gusts, effort and an exposed return
Does wind direction affect the score?
The running score does not model a route’s headwind and tailwind legs.
Can it predict my pace?
No. The weather score is not a performance calculator.
Why can wind alone impose a cap?
The existing rules prevent favourable temperature or dry weather from cancelling a strong-gust flag.
Sources and limits
The numeric application bands come from the existing GoNoGo scorer and methodology. External guidance is linked for its stated context; it is not presented as endorsement of this model.
Live forecast data is supplied by Open-Meteo. An illustrative model output is different from a live forecast, and a forecast is different from a local observation.