When the 85km route turns into your first 100km ride

Planned to cycle 85ish km with a friend, decided on the way home to take a detour because it's so close to 100km we should try it.

Typically I cycle a little faster (25-28kph) but I don't think I would have made it to 100km them. Weather was ideal, not too warm but a lot of wind heading back. Had a burger in Zandvoort and a few stops a long the way.

My back was quite sore, has been recently (not cycling related), shoulders and neck quite tense. I think I need to work on my core a bit.