Hawaii Route 51
| Kauai Veterans Memorial Highway - Kapule Highway | ||||
| Route information | ||||
| Maintained by HDOT | ||||
| Length | 3.5 mi (5.6 km) | |||
| Existed | 1955–present | |||
| Major junctions | ||||
| South end | Route 58 in Lihue | |||
| North end | Route 56 in Lihue | |||
| Location | ||||
| Country | United States | |||
| State | Hawaii | |||
| Counties | Kauai | |||
| Highway system | ||||
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Route 51 is a three-mile (5 km) road that stretches from the junction Wapaa Road with Route 58 at the Nawiliwili Harbor in Lihue to Route 56 north of Lihue on The Garden Isle.