Washington 525
| Termini | WA-20 south of Coupeville on Whidbey Island to I-5/I-405 in Lynnwood |
| Length | 30.5 + ferry route |
| "Where does it go?" | WA-525 runs down the south half of Whidbey Island to Clinton. At Clinton, it is the Mukilteo-Clinton ferry that crosses Possession Sound. Once it reaches Mukilteo, WA-525 continues down the Mukilteo Speedway to I-5 and I-405 in Lynnwood. |
