Have not experimented a lot on long rides but I drive Econ all the time if within EV range, which under certain conditions has reached over 90km.
Beyond EV range I found it is best not to deplete the battery especially if there are hills to climb. So I switch on HV mode to keep the battery level up, and when the destination is within reach I disable HV and arrive in style.
I never use Sport mode, can’t stand having the ICE running and don’t need it to merge onto highway. There’s enough power in EV mode for that.