The ornamental design for a racevest, as shown and described.
FIG. 1 is a front elevation view of the race vest;
FIG. 2 is a back elevation view of the race vest;
FIG. 3 is a left side elevation view of the race vest, with the right side being a mirror image;
FIG. 4 is a front perspective view of race vest shown in use; and,
FIG. 5 is a back perspective view of the race vest shown in use.
The broken lines shown in the drawings are for the purpose of illustrating environmental matter and portions of the race vest that form no part of the claimed design.