The ornamental design for track for an amusementride, as shown and described.
FIG. 1 is a front elevational view of a track for an amusement ride, the undisclosed rear being identical;
FIG. 2 is a left side elevation view of FIG. 1.
FIG. 3 is a right side elevation view of FIG. 1.
FIG. 4 is a top plan view of FIG. 1.
FIG. 5 is a bottom plan view of FIG. 1; and,
FIG. 6 is front perspective view of FIG. 1.
The broken line showing of support feet, support wires and the inner rail are included for the purpose of illustrating and forms no part of the claimed design.