4 Days: Chicago and the Midwest

Four days adds Indiana Dunes National Park on the South Shore Line to the Chicago-plus-Milwaukee spine, though 2026’s derailment recovery is worth a schedule check first. Shorter trip? See 2 or 3 days . More time? Step up to 5 , 6 , or 7 days .

Book these before you go

Day Focus Distance / travel time from Chicago
Day 1 Arrival, Millennium Park, Cloud Gate, the Riverwalk, architecture cruise In Chicago
Day 2 Skydeck or 360 CHICAGO, Navy Pier, the Art Institute In Chicago
Day 3 Milwaukee day trip ~90 min each way, Amtrak Hiawatha
Day 4 Indiana Dunes National Park ~1-1.5 hr each way, South Shore Line

Day 1: Arrival and the Loop

  • Land at O’Hare and ride the Blue Line downtown, about 45 minutes and the only one of Chicago’s two airport rail lines that runs 24 hours a day; landing at Midway instead, the Orange Line is faster at 25-30 minutes but has a real overnight service gap, so don’t count on it for a very early or very late arrival
  • Check into a hotel in the Loop or River North, both put you inside a short walk of Union Station and the Magnificent Mile
  • Walk Millennium Park, free, and photograph Cloud Gate (“the Bean”), then follow the Riverwalk south toward the Loop
  • Book the Chicago Architecture Center’s river cruise for late afternoon if you haven’t already, popular slots sell out May through November
  • Dinner in the Loop or River North; save a full deep-dish meal for a group, it’s not really a solo-portion dish

Day 2: Skyline and the lakefront

  • Morning at the Willis Tower Skydeck (from $32 adult, access to The Ledge glass balconies included) or 360 CHICAGO (from $30 weekday, $35 weekend); pick one, not both, they show the same skyline from opposite ends of it
  • CTA or walk to Navy Pier, free to enter; individual rides, boat tours, and the new-for-2026 Summer Skate lakefront rink are ticketed separately
  • Afternoon at the Art Institute of Chicago ($32 adult, $26 senior/student/teen), home to American Gothic and a genuinely deep Impressionist collection
  • Evening back in the Loop or River North

Day 3: Milwaukee, the easiest interstate day trip

  • Catch an early Amtrak Hiawatha from Union Station, about 90 minutes direct, 7 weekday and Saturday round trips a day (6 on Sunday), fares $19-37 one-way depending on demand, check current times on amtrak.com
  • Spend the day in Milwaukee’s Historic Third Ward or along the lakefront; a short brewery tour fits comfortably between trains
  • Full event calendars and neighborhood detail sit at visitmilwaukee.org
  • Catch an evening train back to Chicago; book the return leg the same day you book the outbound one, since fares climb as departure gets closer

Day 4: Indiana Dunes National Park

  • Ride the South Shore Line direct from Millennium Station, about 20 stops through Hammond, Gary, and East Chicago to Dunes Park; full weekday service only just resumed July 17, 2026, after a June 24 derailment near East Chicago knocked the line onto a reduced weekend-only schedule for weeks, check current departures at mysouthshoreline.com before building the day around one specific train
  • Hike the dunes themselves; Mount Baldy and the 3 Dune Challenge are the two most-photographed options, both free once you’re inside the park, full trail and seasonal hours at nps.gov/indu
  • Pack a lunch or eat in Chesterton before the return train, food options directly at Dunes Park are limited
  • Catch the South Shore Line back into Chicago by early evening; budget extra buffer time given the corridor’s recent disruption history

Can you visit Indiana Dunes without a car? Yes. The South Shore Line runs direct from downtown Chicago to Dunes Park with no transfer, making it the one interstate day trip on this list that a visitor without a rental car can actually do. Just confirm the current timetable first, since this specific line spent weeks on a reduced schedule in mid-2026.

Is the South Shore Line running full service now? As of July 17, 2026, yes: weekday service was fully restored that day, after extra weekday trains supplementing a reduced weekend-only schedule began July 9. Still check mysouthshoreline.com before you build a day trip around a specific train, since a corridor that just came back online can see short-notice changes.

One concrete tip: do Milwaukee and Indiana Dunes on separate days rather than trying to combine gateway trips, they run on completely different rail lines out of different downtown stations, and stacking them into one day leaves no slack if either train runs late.