Walking from Muxia to Santiago.

It is a lovely walk and perfectly possible in a week. None of the etapas are overlong, particularly if you stop at Lires between Muxia and Fisterra and there is plenty of accommodation. Brierley's guide would be perfectly adequate, you just need to reverse the directions - left becomes right, right becomes left, up becomes down - straight-ahead is always straight-ahead.

You have already located the correct part of the forum to explore. For details of Albergues and other accommodations try here: http://www.gronze.com/santiago-finisterre.

Happy planning

Not too long ago this would be done in four days. There are now more albergues along the route so there is more flexibility in how it is done. This page can be used to view the route between Santiago and Finisterre (broken down into a number of short stages.) It shows lodgings. http://trekopedia.com/?page_id=3182

Muxia to Finisterre is about 30 kms but you can stay in Liraes halfway in-between. There are a number of private albergues along the way and I don't think that they require a credential (but would be happy to stamp one if you have one.) They are available through Ivar's store links (Ivar is the owner of this forum.)

https://www.santiagodecompostela.me...passport-from-the-pilgrims-office-in-santiago

I managed to do the trip last year just using the handout available at Santiago's tourist office.

In Finisterre take the side-trip to the lighthouse.

I have done it using the road from Muxia to Cee. Going from Cee backward had a few difficult spots where I had to wait for correct-direction pilgrims to appear to help me find the route! Add a little time for patience, and you will be fine. Learn to recognize the reverse markings, which are usually a blue spiral arrow on the back side of rocks and mojones.