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O’Hara Woods PreserveRomeoville, Illinois

O’Hara Woods Preserve

Romeoville, Illinois

  • Author: Mike MacDonald
  • Date Posted: Jun 1, 2016
  • Category:

Get Directions to O’Hara Woods
(See important “Access & Parking” information below.)

With an invigorating jolt of green and an eye-popping carpet of spring ephermals, this intimate woodland is a springtime paradise and a visually explosive place to visit.

In April, the woodland floor at O'Hara Woods explodes with spring ephemerals including flowers like toothwort.

In April, the woodland floor at O’Hara Woods explodes with spring ephemerals including flowers like toothwort.


  • Large, lush woodland
  • Curving stream


  • April is when shimmering white toothwort makes the ground beneath your feet sparkle like firecrackers and when Virginia bluebells erupt all across the landscape.

Best Times to Visit:

  • Springtime for the wildflowers
  • Fall for the changing colors

Trails: To best begin your hike, take the main trail north from the trail head for about 400 feet until and head left (west) down a narrow dirt trail to your left (west). The main trails of this preserve are wide and made of gravel. The more scenic trails are narrow and made of dirt, though not a danger for ambulatory individuals.

Access & Parking: Park on Arsenal Road by the tennis courts or in any of the nearby spots. Then walk west and continue along the wide gravel trail. After about 500 feet, you’ll see a broken concrete bunker on your left. Walk for another hundred feet or so, and you’ll find a narrow dirt trail on the left that takes you into the best part of the preserve.

Restrooms: There are portable toilet by the tennis court. You can also use the nearby park district facility located southwest of the tennis courts.

Mike’s Thoughts: “Dynamite” is the perfect word to describe tranquil O’Hara Woods. Hidden away inside a quiet Romeoville neighborhood behind Conservation Park, this intimate woodland of mature sugar maple and oak was once called Dynamite Woods. Concrete bunkers, the remains of which are scattered. In the spring, come to peaceful O’Hara Woods and be awed by the silent and breathtaking explosions of the flora.

Learn more about O’Hara Woods Preserve from these websites:

© 2016 – 2019, Mike MacDonald. All rights reserved.

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