"Pheidippides! Run the 26 miles to Athens. Tell them the Greeks walloped Persia in the Battle of Marathon. Got that?"
"On my way, Captain!"
So Pheidippides ran, arriving, reeling with fatigue in Athens, 2 hrs. 24 mins later.
"What news, Stout Pheidippides?"
"F**k! I've forgotten the message. 'Ang on, I'll nip back”
2 hrs. 24 mins was a pretty good time for 490BC!