The following highways are numbered 666:
Belgium edit
- The pilgrimage centre of Banneux in Belgium is located on the N666 road.
Canada edit
- Alberta Highway 666
- Ontario Highway 666 (former)
Ireland edit
Italy edit
- Strada regionale 666 di Sora (formerly strada statale 666 di Sora)
Philippines edit
Sweden edit
- Länsväg 666, in Uppland, eastbound from Alunda.
United Kingdom edit
United States edit
Preceded by 665 |
Lists of highways 666 |
Succeeded by 667 |