Cold Weather Backpack near Harpers Ferry

Registration is required through the following link: Activities Outdoors - Cold Weather Backpack Near Harpers Ferry
The trail will start at Keys Gap, travel to David Lesser Shelter and end at the Blackburn Trail Center, ~12.3 miles total out-and-back plus 2.5 for Day hike without full pack.
• Elevation Gain: ~1,650–2,000 ft
• Estimated Time: 5–6 hours, per day.
• Difficulty: Moderate to hard (mostly due to rocky footing and sustained distance)
• Trail Type: Out-and-back
• Location: Straddles the Virginia–West Virginia border near Harpers Ferry