 New Hampshire Route 78 | ||||
|---|---|---|---|---|
 Map of Cheshire County in southwestern New Hampshire with NH 78 highlighted in red | ||||
| Route information | ||||
| Maintained by NHDOT | ||||
| Length | 3.456 mi[1] (5.562 km) | |||
| Major junctions | ||||
| South end |  Route 78 in Warwick, MA | |||
| North end |   NH 10 / NH 119 in Winchester | |||
| Location | ||||
| Country | United States | |||
| State | New Hampshire | |||
| Counties | Cheshire | |||
| Highway system | ||||
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New Hampshire Route 78 (abbreviated NH 78) is a 3.456-mile-long (5.562 km) secondary state highway in Cheshire County, New Hampshire, United States. A northward extension of Massachusetts Route 78, NH 78 runs entirely within the town of Winchester from the state border to downtown, where it ends at New Hampshire Route 10 and New Hampshire Route 119.