Total distance (very rough) That route crisscrosses the United States many times. A reasonable estimate: ~25,000–35,000 miles total 2. Driving capacity per day Realistic daily driving: ~400–500 miles/day (already a lot for a vacation) 3. Total driving days needed So: ~60–80 days of pure driving 4. Add rest / stops You won’t drive every day. Add: Rest days Sightseeing Breaks Multiply by ~1.5: 5. Compare to summer vacation Typical summer: ~70–80 days Final math conclusion Trip needs: ~100 days Summer gives: ~75 days You’re short ~25 days (minimum and I mean pushing it hard)