Thanks, will take a look at the beach path.
Can you link the Old Caoling bike tunnel? I can’t find it anywhere… there is 1 tunnel here looks pretty easy 25.023992, 121.783569 (type this in google maps)
[quote=“triceratopses”]Done my map, its sexy as hell
Any foreseeable problems?[/quote]
The tunnel on the 106 is wide and straight with a fair-sized lane on both sides. It’s fairly short, which means you can see from one end to the other. Reflectors on the back and flashing lights are always a good idea, but watch out for the occasional scooter punk racing team. 
They seem to congregate at the tunnel entrance on the Yilan side. However, they are late risers. Which reminds me: Leave early enough so you can get across the 106 tunnel (high point of the ride) before 9:00 a.m. as traffic to the coast builds up after that on weekends. If you plan on riding it during the week, traffic is fairly light, in my experience. It’s a great road. Have fun!
Thanks. Yep, i think the coordinates i listed are that exact tunnel… looks easy… i dare em to hit me i’d love the free bike upgrade