Below you can find the To announce the persian defeat in 490 b.c. a man ran over 20 miles to athens across this plain Jeopardy Words Answer. The answer to To announce the persian defeat in 490 b.c. a man ran over 20 miles to athens across this plain has 8 letters. This clue belongs to the Ancient history category and is part of Jeopardy Word Level 705. If you scroll near the bottom you will find other clues and answers part of level 705