1. **State the problem:** Kayleigh ran 20 miles. Charlie ran 3 times as many miles as Kayleigh, and Zion ran 2 times as many miles as Charlie. We need to find how many miles Zion ran. 2. **Write down the given information:** - Kayleigh's miles: $20$ - Charlie's miles: $3 \times$ Kayleigh's miles - Zion's miles: $2 \times$ Charlie's miles 3. **Express Charlie's miles:** $$\text{Charlie} = 3 \times 20 = 60$$ 4. **Express Zion's miles:** $$\text{Zion} = 2 \times \text{Charlie} = 2 \times 60 = 120$$ 5. **Answer:** Zion ran **120 miles**.