Related Clues:

• Rate of movement
• A lap a minute, e.g.
• Marathoner's concern
• Display anxiety, in a way
• Horse's motion
• Clench
• Wear a rut in the rug
• Jockey's concern
• Dueler's unit
• Need a massage
• Duel distance
• Part of R.I.P.
• Rate of progress
• Go back and forth
• Dueler's distance