Driving Phoenix → Las Vegas via I-40 W puts the Grand Canyon South Rim directly en route.
~500 miles, 8+ hours driving *without stops*. Add 2–4 hours for viewpoints (Mather, Yavapai, Grand Canyon Village), rim trail, visitor center.
Phoenix → US-93 N (Hoover Dam) → Las Vegas bypasses Grand Canyon (saves 2 hr). Choose based on time.
South Rim is open year-round; North Rim (closed winter) is *not* on this route.