What medal did this Eritrean-born American long distance runner who was coached by Bob Larsen win during the 2004 Olympics?
Bob Larsen:  His most notable athlete is Mebrahtom Keflezighi, the 2004 Olympic Silver medalist in the Marathon, an accomplishment that ended a 20-year drought in United States distance running medals at the Olympic level (28 years for male athletes). Meb Keflezighi: Mebrahtom "Meb" Keflezighi ( ; Ge'ez: መብራህቶም ክፍልእዝጊ, "Mebrāhtōm Kifl'izgī"; born May 5, 1975) is an Eritrean-born American long distance runner. Meb Keflezighi:  He is the 2004 Olympic silver medalist in the marathon and finished in fourth place in the 2012 Summer Olympics.
silver