Use the hot-melt glue gun, or superglue. The rubber tread has come away from the stiff sole and split a bit. I quite like the shoes so would like to keep them as a spare pair after replacement.

Ta.

Superglue won’t work. Too brittle, non gap filling.

Evo stik contact adhesive.

Or that^

Shoe Goo as posted above is awesome stuff for shoe repair!

My dad used to use that Shoo Goo stuff on his running shoes when I was a young lad, I’d forgotten all about it. It’s just the sort of thing the local hardware shop would have, I’ll go take a look. Thanks.

Shoo Goo works on all of my cycling shoes due to far to much hikeabike!