
Originally Posted by
Zlod
Yep: you've got it!
It's the A4085 on the way to Snowdon Ranger and the A4086 on the way back from Llanberis.
Note that there is only one checkpoint on this leg (at the top of the Snowdon summit cairn), so you don't actually have to go to Snowdon Ranger YH. Also note that you don't have to go to Black Sail YH on the Scafell Pike leg (you pass beneath it).
The run from Llanberis back to Caernarfon can be pretty hard work, especially when your skipper has given you a schedule to get back to the boat!