Leave South Carolina before dawn for the approximately 12–14-hour drive to St. Louis, following I-64 west and then I-70. This is a very long first day, so plan fuel and coffee stops every 2–3 hours and avoid trying to add major detours. Keep an eye on traffic around Louisville, Indianapolis, and the St. Louis suburbs; arriving after dark is realistic. Choose a downtown hotel with included parking, since overnight garage rates commonly run $20–40, and take a proper break before entering the city.
If you reach downtown with daylight left, spend about 1½ hours at Gateway Arch National Park. Walk the riverfront and the grounds around the Gateway Arch; the park itself is generally open from early morning into the evening, while tram rides and the visitor center require separate tickets and timed entry. After such a long drive, the outdoor grounds are the better choice unless you arrive early enough to reserve a tram time. Use the nearby paid garages rather than searching for street parking, and allow 10–15 minutes to walk from the garage to the riverfront.
Head north to Crown Candy Kitchen in Old North St. Louis, roughly a 10-minute drive from downtown outside rush hour. This beloved old-fashioned lunch counter is known for thick milkshakes, malts, chili, burgers, and sandwiches; budget about $15–25 per person. Check its current hours before setting out—service is often limited compared with typical dinner hours, and it may close earlier than expected. If it is open when you arrive, settle in for a relaxed meal rather than rushing; if you reach St. Louis very late, make this a late lunch or early dinner on arrival instead.
Finish with an easy 45-minute stroll through Citygarden Sculpture Park in downtown St. Louis, along Market Street between 10th and 11th Streets. The garden is free and usually open until late evening, with fountains, landscaping, and contemporary sculptures that make for a pleasant decompression walk after the drive. From Crown Candy Kitchen, allow about 10–15 minutes by car; return to your hotel afterward and turn in early, since the next leg toward Keystone is another exceptionally long drive.
After the long overnight drive, keep the morning focused and arrive at Mount Rushmore National Memorial as early as possible—ideally around 7:00–8:00 AM, when the plaza is quieter and temperatures are cooler. The memorial grounds are generally open year-round from early morning until late evening, while the parking facility costs about $10 per private vehicle and is not covered by the National Park Pass. Allow roughly two hours for the Grand View Terrace, visitor facilities, and the Presidential Trail; wear sturdy shoes, bring water, and expect stairs and uneven sections.
From Mount Rushmore, it is about a 25-minute drive south to Crazy Horse Memorial. Spend around 90 minutes viewing the mountain carving and exploring the cultural exhibits; admission is typically in the $15–20-per-adult range, with hours varying seasonally. Continue into Custer State Park for Needles Highway, allowing about two hours for the winding drive through granite spires and narrow tunnels. Drive slowly, watch for wildlife, and check that your vehicle fits the smallest tunnels before setting out; the park’s entrance fee is generally around $20 per vehicle, and summer traffic can make this stretch slower than the map suggests.
Finish the scenic loop at Sylvan Lake, one of the Black Hills’ prettiest stopping points. A relaxed one-hour lakeside walk is enough to enjoy the rock formations and cool water, though this is a good place to pause with a packed snack rather than plan a full picnic after such a long day. Then drive roughly 25 minutes to The Alpine Inn in Hill City for dinner. Its historic, informal setting suits the day, and plan on approximately $20–35 per person; arrive before the dinner rush if possible, as seating can fill quickly in August. Afterward, return to your lodging in Keystone—about 15 minutes away—or Custer, depending on where you are staying.
Leave Keystone around 5:00 AM for the long westbound drive on I-90, continuing through Wyoming toward Bozeman before taking US-191 south to West Yellowstone. Allow 9–10 hours without lengthy stops, plus time for fuel and meals; fill up whenever you can, since services become more spread out across Wyoming and Montana. This is primarily a travel day, so keep stops efficient and expect to reach your lodging in the late afternoon or early evening. Once in West Yellowstone, park at your accommodation and take a short break before heading out on foot—the compact town center is easy to explore without moving the car.
Spend about 30 minutes at the West Yellowstone Visitor Information Center, generally open into the early evening during summer, to confirm Yellowstone National Park road conditions, entrance status, construction delays, and the best wildlife-viewing areas for the following day. Ask specifically about the timing for Old Faithful, Madison, and Lamar Valley, as distances inside the park are much greater than they appear on a map. Pick up a current map and check whether any timed reservations or shuttle arrangements affect your plans. From the visitor center, it is only a short walk to the next stop.
Visit the Grizzly & Wolf Discovery Center for roughly 1½ hours; it is a worthwhile introduction to the region’s wildlife and a good alternative to trying to squeeze in a rushed park drive after your long journey. Summer hours commonly extend into the evening, but verify the closing time when you arrive; admission is usually around $15–25 for adults. Afterward, walk to the Yellowstone Giant Screen Theatre for a one-hour nature film about the park and surrounding region—a comfortable, low-effort way to settle in for the night. Finish at Wild West Pizzeria & Saloon, where hearty pizza and American dishes run about $20–35 per person. Expect a busy dinner period in August, so go early or ask about the wait; keep the evening relaxed, since tomorrow’s Yellowstone National Park outing will require an early start.
Leave West Yellowstone around 4:00 AM for the exceptionally long drive to Grand Canyon Village—roughly 13–15 hours before meaningful stops. Follow US-191 south through Jackson and Pinedale, then connect with I-15, I-70, I-15, US-89, and finally US-64 into the South Rim. This is primarily a transit day, so keep sightseeing modest and plan fuel stops before entering remote stretches of Utah and Arizona. Pack breakfast, water, and snacks; reliable meal choices are limited along parts of the route, and August construction or thunderstorms can slow the drive. A one-way rental drop-off in Arizona should be confirmed in writing with the agency before departure.
After checking in, go to the Grand Canyon Visitor Center if it remains open; hours vary seasonally, but it commonly closes in the early evening. Allow about 30 minutes to pick up a South Rim map, confirm shuttle and trail conditions, and check the next morning’s sunrise and weather information. From there, walk or take the free park shuttle to Mather Point, only a short distance away, for your first wide canyon panorama. In darkness, stay behind railings and use a flashlight—the rim edge is uneven and there are no guardrails in many areas.
If you arrive before closing, have an uncomplicated dinner at Maswik Food Court, where several counter-service options usually run about $15–30 per person; operating hours can change, so check the posted schedule at your lodging. It is a practical choice after the long drive and is within Grand Canyon Village, avoiding another trip by car. If everything is closed, keep provisions in the vehicle or ask your lodge about late-arrival options. Save Yavapai Geology Museum for the following morning if necessary—it is best appreciated in daylight, when the exhibits and nearby canyon views are easier to take in.
Do not attempt the listed 16–18-hour drive in one day; after the previous days’ mileage, it would be unsafe. The sensible plan is to leave Grand Canyon Village around 5:00 AM, drive roughly 1½–2 hours to Flagstaff Pulliam Airport, and take a connecting flight to Portland International Airport. After collecting luggage, allow 30–45 minutes to reach Washington Park by taxi or rideshare; parking is limited and the park’s shuttle system is useful in summer. If your flight arrives late, save the garden visits for the following morning rather than rushing them.
Your first Portland stop should be the Portland Japanese Garden, a peaceful place to reset after the journey. Allow about 1½ hours for the landscaped paths, ponds, and hillside views; check the 2026 opening hours and reserve timed admission in advance, since August is busy. From there, walk a few minutes through the park to the Portland International Rose Test Garden, which is free and generally open from early morning until evening. The roses are usually at their best in summer, and the upper terraces offer a good first view toward downtown and Mount Hood on a clear day.
For an easy meal, head to Pine State Biscuits in Southeast Portland—the Division Street location is convenient if you are staying on the east side. Expect about $12–20 per person and a relaxed, counter-service atmosphere; the Reggie Deluxe is the indulgent local favorite, while a biscuit sandwich with coffee works well after a travel day. Allow about 45 minutes, plus roughly 15–25 minutes by rideshare from Washington Park, depending on traffic. If you are arriving too late for breakfast, treat it as a substantial lunch and avoid adding more sightseeing.
After eating, return to your Portland lodging or Portland International Airport as needed. From Southeast Portland, allow 30–60 minutes for traffic and airport security logistics; the MAX Red Line is often more predictable than a car for the airport, though a rideshare is easier with luggage. If you have checked into a hotel, keep the evening unstructured—walk around your immediate neighborhood, pick up groceries, and rest rather than trying to continue the road-trip pace.