How long is the outside lane of a 400m track?

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10 years ago 08/25/2013 11:32am EDT

re: not strong in math

The Distances Around Each Lane

Since the distance around the track in lane one, the inside lane, is 400 meters the distance around the track for the other lanes can be calculated by knowing the lane width and a few other measurements. The formula, L = 2S + 2pi(R + (n-1)w) can be used to calculate the distances around the track for the various lanes. In this formula L equals the lane distance, S equals the length of the straightaway, R is the radius of the turn, n is the lane number and w is the width of the lane.

Since the IAAF has standardized track lane widths at 1.22 meters the above formula calculates the distance around the track in lane 2 as 407.67 meters, lane 3 as 415.33 meters, lane 4 as 423 meters, lane 5 as 430.66 meters, lane 6 as 433.38 meters, lane 7 as 446 meters and lane 8 as 453.66 meters.

http://www.livestrong.com/article/168904-what-is-the-distance-around-a-running-track-for-each-lane/#ixzz2czy9ODQK

7 years ago 12/07/2016 4:57pm EST

re: Douglas

Douglas wrote:
The Distances Around Each Lane
Since the distance around the track in lane one, the inside lane, is 400 meters the distance around the track for the other lanes can be calculated by knowing the lane width and a few other measurements. The formula, L = 2S + 2pi(R + (n-1)w) can be used to calculate the distances around the track for the various lanes. In this formula L equals the lane distance, S equals the length of the straightaway, R is the radius of the turn, n is the lane number and w is the width of the lane.
Since the IAAF has standardized track lane widths at 1.22 meters the above formula calculates the distance around the track in lane 2 as 407.67 meters, lane 3 as 415.33 meters, lane 4 as 423 meters, lane 5 as 430.66 meters, lane 6 as 433.38 meters, lane 7 as 446 meters and lane 8 as 453.66 meters.
You are not correct on the lane 6 value.
Read more:
http://www.livestrong.com/article/168904-what-is-the-distance-around-a-running-track-for-each-lane/#ixzz2czy9ODQK

3 years ago 07/10/2020 3:38pm EDT

re: trackhead

trackhead wrote:
Ok, if I use 1.22m for the width I get 40.370995m for the new radius, and 253.65838m for the distance of both curves for a final distance of 453.65838m for a full lap in lane 8, or, when rounding to signficant figures, 453.66m using sig figs.

We have a winner.

3 years ago 07/10/2020 3:49pm EDT

re: TheOhioState

It's about 450m, everyone knows that. Just look at the 400m start line in lane 8.

3 years ago 07/10/2020 4:17pm EDT

re: TheOhioState

TheOhioState wrote:
trackhead wrote:
Ok, if I use 1.22m for the width I get 40.370995m for the new radius, and 253.65838m for the distance of both curves for a final distance of 453.65838m for a full lap in lane 8, or, when rounding to signficant figures, 453.66m using sig figs.
We have a winner.

Most tracks in the US will have lane widths of 42 inches (1.0668 m) as opposed to the WA standard of 1.22 m. Some might even have narrower lanes than that, but the vast majority will have 42 inch lanes. High schools don't need their tracks to have 1.22m lanes and can save a lot of land area by keeping the widths to 42 inches.

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