Last year I made a reservation on the 18th of March for a start on 7th of June, which was a Tuesday. Think weekends around this date were full or filling up quickly. July and August were fully booked at this time, perhaps also quite a lot of Sept. (but we didn't have time in Sept. so I didn't pay much attention). Still dates to choose in the let's say first week of June.
I checked it occasionally here and there before in February or so, I guess there were more options, not sure about summer but a few dates available also in July or so, and in the middle of March I became nervous because also the "shoulder zones" were filling up. Could be that here and there a date in July or August was free again.
There were also some optimistic people at the end thinking as a solo hiker it shouldn't be a big problem to get a spot in person - I'm not sure how this worked out. But as with every reservation so early in advance: there are cancellations.
Last edited by Kokanee75; 01-08-2017 at 10:19 PM.