From the marked trailhead on the east side of Howland Hill Road, the Mill Creek Trail climbs gradually for about half a mile, gaining roughly 100 feet. The route is mostly compacted gravel, dirt, and forest duff, with roots along and across the tread. A metal stair section is the steepest short pitch. Past it, the trail rises gently beside the road before dropping toward Mill Creek and the grove. A sharp switchback comes less than two tenths of a mile before the elevated boardwalk.
The return follows the same approach, so save some energy for the uphill sections on the way back. At the Mill Creek overlook, take a moment for the creek, then turn left at the next junction for the grove. Mill Creek Trail continues beyond that turn; following it takes you onto a much longer hike.