Hi
@luckylefty,
Lots of good advice from everyone so far.
My suggestion is that you just plan where you want to start and see how it works out. When you're walking, you'll realise that it's very easy to skip sections as some parts of the Camino are well served by public transport. This could also be a good use of your rest day - an early morning bus or train could take you to a place where you can rest for the remainder of the day.
Potential options might be:
1. There seem to be plenty of local buses between Pamplona and Burgos. We met a few people who were doing a combination of walking and buses on this stretch. If you decide to skip a 'chunk' at that point, you could get a bus from Logrono to Burgos.
2. As
@Anemone del Camino said, you won't miss much by taking a bus into Burgos. You could also consider taking a bus for the 11kms between Burgos and Tardajos - giving you a good head start on your first day of the Meseta.
3. There's a direct train link between Sahagun / El Burgo Ranero and Leon. We took it from El Burgo Ranero as our feet were in bad shape. It left at 8am and got into Sahagun at 8.31, giving us a whole day to get new shoes and explore Leon.
4. A lot of people seem to take a bus out of Leon to avoid all the concrete. There are regular buses to Vergen del Camino and beyond.
There are of course many variables and all become clear (and easy) when you are there. You might find it hard to leave the friends that you made when you began your Camino. Or, you might look forward to meeting even more people when you move on. You'll probably also meet other pilgrims on the buses and trains!
31 days is a lovely amount of time, even when you allow for the travel and jet lag. We've only been able to do about 16 days each time so far, but it has still been an amazing experience.
Buen Camino,
Nuala