Am I crazy to talk a dear low vision friend into doing the CF with me this fall? I am 60, she is 55. She just has a few years of partial sight left. She would wear a "blind" vest, bring a cane, trekking poles for the easy stretches and me. It is my sense that the path doesn't have lots of road hazards (roots, big rocks), but I am not sure how many hours of day light we will have in October, and I would love advice on accessibility issues. Thanks in advance. Lisa in Seattle
Hours of sunrise and sunset can be found on many sites. It won't take into account mountain shadows, but it will give you a sense of how many hours you have :
http://www.sunrise-and-sunset.com/en/sun/spain/santiago-de-compostela/2017/october
Are you crazy, as in irrational? No, absolutely not. You have a dear friend, and presumably you know this person well enough to know the two of you will want to spend many demanding hours together; that this is an experience that she would want to have and that you want to share with her. There are many different creative adaptations that are appropriate for many different people with different abilities, so in general it sounds very achievable. Your friend is probably the best judge of what she can do, what she could do if necessary, and what she cannot do.
You may need a back up plan if you need some time apart while walking. I suspect the interpersonal aspect could be the more demanding piece! You would both need to be aware of each other's limits. Who knows - She might be the faster walker or have better lung capacity for climbing. You might be more comfortable going up hill, while she is more comfortable going down. All the usual walking compatibility issues, but possibly without the luxury of saying - "you go on ahead, I'll catch up later".
Or maybe you can create some safeguards so you each can say that! I'd be worried about creating a situation where one person resents the other, so some open and frank conversations before you leave would be appropriate (just like anyone walking with friends or family).
The advice about practice is good. If you and she are considering this, even if just in jest, try to go for a walk with each other every weekend and try out different types of terrain. If there is any place or situation that creates an issue for you (e.g. what works on pavement doesn't work in mud or what works for a narrow winding path isn't necessary for a wide gravel path), you can sort out a variety of strategies.
Buen Camino!