| Threemile Run Three Mile Run | |
|---|---|
&sq=&lang=&file=File:USA_Pennsylvania_relief_location_map.svg)  Threemile Run | |
| Location | |
| Country | United States |
| State | Pennsylvania |
| County | Bucks |
| Township | West Rockhill, East Rockhill |
| Physical characteristics | |
| Source | |
| • coordinates | 40°22′19″N 75°19′59″W / 40.37194°N 75.33306°W |
| • elevation | 500 feet (150 m) |
| Mouth | |
• coordinates | 40°25′14″N 75°16′1″W / 40.42056°N 75.26694°W |
• elevation | 394 feet (120 m) |
| Length | 5.57 miles (8.96 km) |
| Basin size | 8.11 square miles (21.0 km2) |
| Basin features | |
| Progression | Threemile Run → Lake Nockamixon → Tohickon Creek → Delaware River → Delaware Bay |
| River system | Delaware River |
| Waterbodies | Lake Nockamixon |
| Bridges | Forrest Road Old Mill Road South Bethlehem Pike (South West End Boulevard) Hill Road Stone Edge Road North Rockhill Road West Rock Road Pennsylvania Route 313 (Doylestown Pike, Dublin Pike) |
Threemile Run (Three Mile Run) is a tributary of the Tohickon Creek in Bucks County, Pennsylvania in the United States and is part of the Delaware River watershed.