To me that is quite a lot of miles to walk in four weeks. I was going to go for 100 miles in 4 weeks but that’s only 25 per week and I thought I’d could manage that easily.
I will have to pick just one month and do it. Even if it rains and I can only walk 15 of the 30 days then I will just have to make sure I can do enough miles on those days to make sure I did the 150 miles.