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D.12.2.1 The Endurance event will consist of multiple laps over a closed course to a total distance of approximately 22 km.
D.12.2.2 The Endurance course will be designed with the following specifications. Average speed should be 48 km/hr to 57 km/hr with top speeds of approximately 105 km/hr.
a. Straights: No longer than 77 m with hairpins at both ends
b. Straights: No longer than 61 m with wide turns on the ends
c. Constant Turns: 30 m to 54 m diameter
d. Hairpin Turns: 9 m minimum outside diameter (of the turn)
e. Slaloms: Cones in a straight line with 9 m to 15 m spacing
f. Miscellaneous: Chicanes, multiple turns, decreasing radius turns, etc.
g. Minimum track width: 4.5 m
h. Designated passing zones at several locations
D.12.2.3 The Endurance course specifications may deviate from the above to accommodate event site requirements.