Motivation creates energy
I’ve run two full marathons, (42 k), five 30 k races and at least 6 half marthons.
People are most motivated at the begining of the race. At that point there is no pain and they are excited. The energy is so explosive that people are jumping up and down while waiting for the race to start. You would think that they should be conserving their energy.
When you feel motivated you find and create energy.