I agree with some of the comments here - a walking group is just that and in many instances I wonder if they miss some of the beauty by never stopping to admire an area.
My daughter and family are like that,no sooner get to a beauty spot than they want to move on.
luckily my wife is the opposite and many times on walks we stop and whilst I shoot the photos she is happy to enjoy the countryside,mountains or fresh air depending on our location.
Even then I would at times like to stay longer at a location just for the right light but think I am pushing my luck.
If you cant get a group together then do it alone.I have yet to do a walk were quite some time is spent in conversation with people along the way.
Good luck with the group but even if you get no offers then do it alone,quite amazing how you will see things that would never have interested you before.
There maybe a local camera club,it wouldn't be for me but it may appeal to you.

Eddie