Argonne National Laboratory

Main Trail & Tear-Thumb Trail

3.8 mi · ▲ 54 ft · 1 hr 18 min

Main Trail & Tear-Thumb Trail is a 3.8-mile out-and-back in Argonne National Laboratory near Darien, IL. It is mostly level, with 54 ft of elevation gain, and mostly dirt. It scores 4/100 on the Ambleway Wildness scale: paved and peopled.

Elevation

0 mi673 – 751 ft4.1 mi

Getting there

Trailhead: Unnamed 41.72553, -87.97331
Nearest town Darien, IL

Directions

AMBLEWAYwww.ambleway.com

Main Trail & Tear-Thumb Trail

3.8 mi · ▲ 54 ft · 1 hr 18 min

Elevation 671–752 ft

Out & Back · Argonne National Laboratory

Trailhead: 41.72553, -87.97331

Weather Sep 21: sunrise 6:38 AM · sunset 6:54 PM

Dogs allowed on leash · Transit-accessible: Argonne National Lab stop 275 m from the trailhead · Drinking water at the trailhead · Parking lot at the trailhead

  1. Start at the trailhead, heading W.
  2. 50 ftBear left, heading SW.
  3. 100 ftTurn right, heading W.
  4. 300 ftBear left onto Main Trail, heading SE.
  5. 50 ftTurn right, heading SW.
  6. 0.3 miBear right, heading SW.
  7. 200 ftTurn left onto Tear-Thumb Trail, heading W.
  8. 0.3 miTurn left, heading W.
  9. 50 ftSharp right, heading W.
  10. 50 ftTurn left, heading W.
  11. 0.8 miContinue straight onto Main Trail, heading SW.
  12. 0.4 miReach Tear-Thumb Trail, then turn around and head back the way you came.
  13. 0.4 miContinue straight onto Tear-Thumb Trail, heading SE.
  14. 0.8 miTurn right, heading E.
  15. 50 ftSharp left, heading E.
  16. 0.3 miTurn right onto Main Trail, heading N.
  17. 200 ftBear left, heading NE.
  18. 0.3 miBear right, heading NE.
  19. 250 ftTurn left, heading NE.
  20. 100 ftBear right, heading NE.
  21. 50 ftArrive back at the trailhead.

Each distance is the walk from the previous step. Tap a step for a map of its junction.

Trail surface

80% dirt14% paved3% gravel2% grass1% unspecified

Weather

Sunrise 6:38 AMSunset 6:54 PM

Good to know

  • Dogs allowed on leash
  • Transit-accessible: Argonne National Lab stop 275 m from the trailhead
  • Drinking water at the trailhead
  • Parking lot at the trailhead