Groups tend to set their speed by whoever is quickest, as though pace were the point rather than a side effect. Then someone who needs more time, an older relative, a child, a person in pain, becomes a problem to be managed instead of a guest. Usually the actual purpose of the day survives a slower version perfectly well; what suffers is the itinerary, which nobody will remember anyway. The reason people came was each other.

Set the next outing at a pace the slowest person can enjoy rather than endure. Cut one stop instead of hurrying between three. Ask them what would work, and plan from that answer outward.