White Clay Creek State Park · DE
Twin Valley Trail
A forested loop, often combined with the Tri-State Trail, leading to the Tri-State Marker where Pennsylvania, Maryland and Delaware meet and the Arc Corner Monument, with tall wildlife observation stands.
Live · updated
Today
Skip the mountain biking plan today.
Today's best: mountain biking
Flood Watch issued July 27 at 2:15PM EDT until July 29 at 2:00PM EDT by NWS Mount Holly NJ
Conditions
Score by activity
Hiking
Skip the hiking plan today.
Trail running
Skip the trail running plan today.
Mountain biking
Skip the mountain biking plan today.
Dog walking
Thunderstorms in today's forecast — dogs panic and trails become dangerous.
Score breakdown
- · 79°F air — Within comfort range, outside ideal
- − Thunderstorms — Get off exposed ridges before they arrive
- ✓ Trail: prime — No meaningful rain in the last 48 hours. Trail surface is dry and tacky — prime traction.
- − NWS alert active — Check the alert before heading out
Trail facts
- Distance
- 2.02 mi
- Elevation gain
- 229 ft
- Surface
- mixed
- Difficulty
- moderate
Trailhead
Coordinates
39.7177, -75.7634 — DE.
Park
Part of White Clay Creek State Park (official site →).
Peak nymphal tick activity — check yourself within 2 hours of leaving the trail.
Frequently Asked
How long is Twin Valley Trail?
Twin Valley Trail is a 2.02-mile route with 229 feet of elevation gain — moderate — some sustained climbing or technical sections; expect to work for it but no specialized skills required. The trail facts panel on this page lists distance, surface, and access tags as they appear in OpenStreetMap.
What's the trail surface like at Twin Valley Trail?
Twin Valley Trail is mixed surface — sections of dirt, rock, and root that vary along the route. Today's mud rating, derived from recent precipitation and the surface type, is shown in the conditions panel above.
Who manages Twin Valley Trail, and where do closure alerts come from?
Twin Valley Trail is in White Clay Creek State Park, which is managed by the managing agency. Closure and advisory data on this page comes from the agency. Always confirm against the park's own page before driving — emergency closures can post faster than scrapers refresh.