1000 km NW/SE zig zag distance

 
Courses are 3 legs aligned NW/SE. Not enough room to go S first
 
#1. Better, since a shorter last leg. NW, SE, NW
Turnpoint                       Latitude    Longitude    Distance TC  MC
St: Chicago Glider Club         41 25 55 N   88 14 50 W
 1: Platteville       PVB       42 41 22 N   90 26 40 W 229.0 km  308 308
 2: Vermilion County  DNV       40 11 57 N   87 35 45 W 364.7     138 138
 3: Albertus          FEP       42 14 46 N   89 34 55 W 281.8     324 324
Fn: Chicago Glider Club         41 25 55 N   88 14 50 W 142.9     128 128
Total:                                                  1018.4 km
FAI 1000 km maximum loss of height 1183 m, 3884 ft.
 
#2 A little bit shorter, but a longer 3d leg. 
Turnpoint                       Latitude    Longitude    Distance TC  MC
St: Chicago Glider Club         41 25 55 N   88 14 50 W
 1: Platteville                 42 41 22 N   90 26 40 W 229.0 km  308 308
 2: Rantoul                     40 17 37 N   88 08 33 W 328.2     143 143
 3: Monroe                      42 36 54 N   89 35 25 W 284.9     335 335
Fn: Chicago Glider Club         41 25 55 N   88 14 50 W 172.1     139 139
Total:                                                  1014.2 km
FAI 1000 km maximum loss of height 1142 m, 3747 ft.
 
 
750 K NW/SE zig zag distance
 
Ideal: start downwind, FG from Kankakee should be easy on a 750 day. (Stay high at that last turnpoint!) Do sectors or you’ll lose the 1.3 km margin. 
Turnpoint                       Latitude    Longitude    Distance TC  MC
St: Chicago Glider Club         41 25 55 N   88 14 50 W
 1: Kentland                    40 45 31 N   87 25 42 W 101.6 km  137 136
 2: Platteville                 42 41 22 N   90 26 40 W 329.7     311 311
 3: Kankakee                    41 06 00 N   87 55 00 W 273.9     129 129
Fn: Chicago Glider Club         41 25 55 N   88 14 50 W  46.1     323 322
Total:                                                  751.3 km
 
Northwest first – good for a late start if you don’t want to FG from south, and if you’re nervous about going to Platteville. 
Turnpoint                       Latitude    Longitude    Distance TC  MC
St: Chicago Glider Club         41 25 55 N   88 14 50 W
 1: Monroe           EFT        42 36 54 N   89 35 25 W 172.1 km  320 320
 2: Kentland         50I        40 45 31 N   87 25 42 W 273.5     138 137
 3: Dixon            C73        41 50 01 N   89 26 46 W 206.6     306 305
Fn: Chicago Glider Club         41 25 55 N   88 14 50 W 109.2     113 113
Total:                                                  761.5 km
 
South first with a long first leg. Good for an early start, but FG from Pontiac
Turnpoint                       Latitude    Longitude    Distance TC  MC
St: Chicago Glider Club         41 25 55 N   88 14 50 W
 1: Vermilion County DNV        40 11 57 N   87 35 45 W 147.6 km  157 157
 2: Foster           7A4        42 27 59 N   90 10 10 W 331.2     320 320
 3: Pontiac          PNT        40 55 28 N   88 37 26 W 214.2     142 142
Fn: Chicago Glider Club         41 25 55 N   88 14 50 W  64.6     029 028
Total:                                                  757.6 km
 
 
500K distance
 
Only two turnpoints – start downwind, finish downwind. 
Turnpoint                       Latitude    Longitude    Distance TC  MC
St: Chicago Glider Club         41 25 55 N   88 14 50 W
 1: Kentland                    40 45 31 N   87 25 42 W 101.6 km  137 136
 2: Freeport/Dornink            42 22 40 N   89 33 50 W 252.9     316 315
Fn: Chicago Glider Club         41 25 55 N   88 14 50 W 151.4     133 133
Total:                                                  505.9 km
 
Starts upwind, but stays closer 
Turnpoint                       Latitude    Longitude    Distance TC  MC
St: Chicago Glider Club         41 25 55 N   88 14 50 W
 1: Albertus                    42 14 46 N   89 34 55 W 142.9 km  309 309
 2: Pontiac                     40 55 28 N   88 37 26 W 167.2     151 150
 3: Rochelle                    41 53 35 N   89 04 42 W 114.2     340 340
Fn: Chicago Glider Club         41 25 55 N   88 14 50 W  86.0     126 126
Total:                                                  510.2 km
FAI 500 km maximum loss of height 1102 m, 3617 ft.
 
 

O&R for  a NW streeting day

Check that two turnpoints counts for OR speed.

500 km O&R 

Turnpoint                       Latitude    Longitude    Distance TC  MC
St: Kankakee                    41  6.00 N   87 55.00 W
 1: Platteville                 42 41.36 N   90 26.66 W 273.8 km  311 310
Fn: Kankakee                    41  6.00 N   87 55.00 W 273.8     129 129
Total:                                                  547.7 km

 

 
 

FAI Triangles

750 and above: no leg shorter than 25%, no leg longer than 45%

Others: No leg shorter than 28%

 

750 km triangle

Turnpoint                       Latitude    Longitude    Distance TC  MC
St: Chicago Glider Club         41 25 55 N   88 14 50 W
 1: Kentland      50I           40 45 31 N   87 25 41 W 101.6 km  137 136
 2: Tri-County    2C6           40 46 26 N   90 04 27 W 222.8     271 270
 3: Platteville   PVB           42 41 21 N   90 26 39 W 215.2     351 351 
Fn: Chicago Glider Club         41 25 55 N   88 14 50 W 229.0     126 126
Total:                                                  768.6 km
Note: Avoid class C near tri county
 
Triangle credited distance
Turnpoint                       Latitude    Longitude    Distance TC  MC
St: Kentland                    40 45 31 N   87 25 41 W
 1: Tri-County                  40 46 26 N   90 04 27 W 222.8 km  271 270
 2: Platteville                 42 41 21 N   90 26 39 W 215.2     351 351 28.03%
Fn: Kentland                    40 45 31 N   87 25 41 W 329.7     129 129 42.94% 
Total:                                                  767.8 km

 

500 km triangle

 

Turnpoint                       Latitude    Longitude    Distance TC  MC
St: Lowell C97                  41 13 49 N   87 30 28 W
 1: Marshall County C75         41 01 09 N   89 23 11 W 159.1 km  262 261
 2: Freeport/Dornink C86        42 22 40 N   89 33 50 W 151.8     354 354
Fn: Lowell                      41 13 49 N   87 30 28 W 212.9     126 125
Total:                                                  523.8 km
FAI 500 km maximum loss of height 1237 m, 4060 ft.

 

300km triangles

 
Turnpoint                       Latitude    Longitude    Distance TC  MC
St: Kankakee                    41 06 00 N   87 55 00 W
 1: Hartenbower Hectares        41 10 46 N   89 08 52 W 103.5 km  275 275
 2: De Kalb Taylor              41 55 54 N   88 42 29 W  91.3     023 023
Fn: Kankakee                    41 06 00 N   87 55 00 W 113.6     144 143
Total:                                                  308.4 km