Wind and Altitude Correction in the 200 Metre Dash

Corrections for wind effects in the 200m are much more complicated than those in the 100m. In addition to cross-wind effects which provide assistance or resistance around the curve, stronger winds will cause variations between lanes (due to the staggered start). The calculator provides a convenient method to estimate the approximate corrected time for men's and women's races, run under varying conditions.

The links below demonstrate how the all-time performances are re-shuffled after drag correction. Since the actual wind conditions on the curve are unknown, the wind is assumed to be entirely in the direction measured by the gauge (down the 100m straight). This can underestimate the corrections in certain cases (e.g. Leroy Burrell's wind-assisted 19.61s performance). Also, the corrections assume the race was run out of lane 4 of a standard IAAF track. If the actual lane differs significantly from this, then the corrections may differ from those reported.

It is interesting to note that the number of true 19.7s-calibre races is reduced by almost half, and (with the exception of Michael Johnson's WR) become the top performances (no more 19.6s races). The reshuffling of the Women's rankings are slightly more stable, but all performanes under 21.6s are removed (except again the WR).

Please note that these are preliminary adjustments, and are not to be interpreted as ``exact'' figures. They are, however, probably a good estimate of what kind of corrections might be expected.

Technical publications will appear soon. Please email the author for details.

Click here:
Corrected Rankings:
  • Men's corrected all-time performances, 19.90s or better (by official rankings)
  • Men's re-ranked all-time performances
  • Women's corrected all-time performances, 21.90s or better (by official rankings)
  • Women's re-ranked all-time performances

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