Many races have wrong distance, for example DoubleYou shows over 2 miles, while it have like 700 meters.

This way can help calculate distance a bit more accurate.

Red dots = checkpoints

Red lines = track

Yellow lines = distance between checkpoints

Green lines = X and Y distance between checkpoints

MadMax

No Extra Information

475 565

0 0

15 300 12 11 1 0 14 0 0 0 0

0 0 2

0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0

998.781677 2542.633300 10.416600 55.077098

1008.788024 2557.533203 10.429699 54.668498

841.711914 2630.111572 11.824199

535.701782 2657.115234 47.222698

417.870513 2692.186767 60.096099

230.388107 2749.940673 59.647598

-63.614200 2636.860595 63.580600

-170.334197 2636.117187 63.266998

-407.809906 2714.776855 62.131000

-962.901611 2715.850341 45.671798

-1207.825805 2687.505126 45.732498

-1343.134643 2636.756347 50.563201

**How?**Checking distance between 2nd grid and 1st cp

1008.788024 2557.533203 10.429699 54.668498

841.711914 2630.111572 11.824199

X distance: (1008.788024)-(841.711914)=(

**167.07611**)

Y distance: (2557.533203)-(2630.111572)=(

**72.578369**)

Z distance: (10.429699)-(11.824199)=(

**1.4115**)

horizontal distance:

X distance

^{2}+Y distance

^{2}=horizontal distance

^{2}**167.07611**^{2}+

**72.578369**^{2}=

27914.4265327321+5267.619646700161=33182.046179010161

sqrt 33182.046179010161=

**182.15939772356012321577005465159**so horizontal distance =

**182.15939772356012321577005465159** meters

now total distance:

horizontal distance

^{2}+Z distance

^{2}=total distance

^{2}**182.15939772356012321577005465159**^{2}+

**1.4115**^{2}=

33182,046179010161+1.99233225=33184.038511260161

sqrt 33184.038511260161=

**182.1648662922138808989957690671**so total distance between 2nd grid and 1st checkpoint = **182.1648662922138808989957690671**now do same to check

**total distance** between 1st checkpoint and 2nd checkpoint

then same for

** total distance **between 2nd checkpoint and 3rd checkpoint

then same for all other checkpoints

later sum up all total distances:

**total distance **between 2nd grid and 1st checkpoint (

**for example, as we counted 182.1648662922138808989957690671**)

+

**total distance **between 1st checkpoint and 2nd checkopint (

**for example let's say 230**)

+

**total distance** between 2nd checkpoint and 3rd checkpoint (

**for example let's say 138**)

+same for rst checkpoints (

**for example let's say 2375**)

then:

sum of all distances/1.609344=race distance in miles

**182.1648662922138808989957690671**+

**230**+

**138**+

**2375**=

**2925.1648662922138808989957690671****2925.1648662922138808989957690671**/1.609344=~1.8 mile

**so total race distance is around 1.8 mile**I think I explained it enough, and hope You understand what I mean.

**In short:**

X distance^{2}+Y distance^{2}=horizontal distance^{2}

horizontal distance^{2}+Z distance^{2}=total distance^{2}

then same for all checkpoints

sum up all distances

sum of all distances/1.609344=race distance in miles