How have people managed keeping their biologics (I'm on Amgevita, which is the same drug as Humira) cold for so long? I've used Frio pouches when I travel for my insulin, but I'm newly on a biologic for Crohn's and I don't think they would keep it cold enough... Any other people's experiences would be hugely helpful!
I have had the same problem on two Caminos. I had to have friends post my Humira every second week to a hotel. The first time, it worked pretty well. I packed 3 injections in 3 separate boxes and left them in the refrigerator at a friend's place in Barcelona. They couriered a package, with a regular, frozen ice pack in it, to me, the day before I was to arrive in a specific hotel. From within Spain, that worked well.
The second time, my friends were not in Spain anymore, and I had to have a friend in France courier my Humeira to me. That didn't work quite as well as the time for delivery was a little erratic. On one occasion, I had to wait an extra day for my injection to turn up, and once, I had to have it taken to me in a taxi, once it finally turned up, two days late. It wasn't ideal, but I managed. FYI, years ago, Humeira had to be kept cold all the time, right up until use. Over recent years, it was determined to be fine at room temperature for up to a week, just as long as it was used within that time. Do you know anyone in Spain at all?
If you speak Spanish, you could try calling hotels or kind, helpful, private albergues to ask if they would mind storing a dose of your medication in their fridge for 1, 2, 3, or 4 weeks, until you arrive there. You could land in Spain and freeze your ice packs overnight before couriering one dose, packed in ice, to each of those places. They will receive them overnight (as long as you pick bigger places to send them to), and the receiver could put them straight in the fridge, upon receipt, to await your arrival.
Good luck, and have a great trip!