| Location | Naoiri District, Ōita Prefecture, West Japan |
|---|---|
| Time zone | JST |
| Length | 1.430 km (0.889 mi) |
| Turns | 8 |
SPA Naoiri is a 0.889mile (1.430 km) motorcycle racing circuit in 510-15 Urahara, Kamitagita aza, Naoiri-machi Ohaza, Naoiri District, Ōita Prefecture 878-0403, West Japan.[1]