Walk back and forth, back and forth

• Slow people might be asked to pick it up
• Yonkers event
• Runners set it
• Set the tempo
• A sergeant might ask soldiers to pick it up
• Rate of walking speed
• Expectant father's walk
• Walk or run
• Stride back and forth

Wikipedia Word definitions in Wikipedia
Pacé refers to two communes in France: Pacé, Ille-et-Vilaine Pacé, Orne