There are two parking areas at Imagination Glen.  There is a East Parking lot (often referred to as the Soccer Field Parking) and a West Parking Lot (ofter referred to as "the Gravel Lot").  On the interactive map below, you will see red markers for both of these entrances, along with Parking location markers and trail-head location markers. 



EAST LOT:
The East Lot entrance is located at roughly 2190 SR 149, Portage, IN 46386 (for GPS puposes).   Heading south on 149, the entrance is marked by a blue sign (see pic above).  You will see a stop light and an overhead bike path bridge up ahead.  Heading north on 149, you're going to go past the traffic light (lenberg rd.) and under the bike path bridge - it'll be on the left.   When you pull onto the road, you will see a BMX track on the right.   The parking for the trail-head a down at the end of the road in the large paved parking lot.

WEST LOT:
The West lot is entrance is located at roughly 2222 McCool Rd, Portage, IN 46368 (for GPS purposes).  After you enter the park the road will split, turn right and follow until you get to the gravel parking lot.  This is the lot that most people who Mountain Bike use.