circuit JNA n°4 . 21 km nort sur erdre canal 6.2 6.7 7 6.5 6.6 6.5 7.5 6.5 6 5.9 9 8 8.9 8.9 7.9 5 5 5 5 6.5 8.1 7.8 7.1 7.9 7 6.5 8 7 6.1 5.7 7 7.4 8 8 9 9 9.6 9 9 9 9 9 9 7 6.7 7 6.3 7.3 8 8 7.2 6.4 6.4 6 5.8 4.9 4.7 5.8 6 5.5 6.6 8.6 7.9 7 10.3 8 7.9 7.8 7 7 7.1 6.9 7 6.6 7 7 6.9 9.8 8.9 9.6 9.7 9.2 8.9 10 9.2 11 9.2 9 9.1 9.1 9.2 9.7 11.3 12 11.4 12 14.9 13.7 12.1 13.8 17.3 21.4 22 21 21 20.2 21.6 21.9 22.2 22.1 21.3 21.8 20.7 21.2 21.1 21.5 21.2 21.2 21.1 20.9 21.4 21 21.6 21 21.8 21 20.7 20 20 17.4 16 17.8 17.2 16 16 15 15 15 14 13 13.2 14 14 13.9 9.8 10.7 10.3 9.9 8.2 8.4 11 12.5 12.9 13 12.2 10.9 10.6 13 12 14 13 12.2 8.9 7.8 7 6.9 7 6.7 6.7 6.3