1. Determine Jessica's driving rate: \frac{819 \text{ miles}}{13 \text{ hours}} = 63 \text{ miles/hour}
2. Multiply the rate by 11 hours to find how many miles she would drive: 63 \text{ miles/hour} \times 11 \text{ hours} = 693 \text{ miles}
Answer: 693 \text{ miles}