"Oldest still alive T&F olympic champions..." trivia.

[dj]

Frank Shorter and George Rhoden(?)

[79]

Who is the oldest one in the marathon today?
And who is the oldest still alive other one among the oldest T&F olympic champions (relays included of course) nowadays?
You can look for the answers on the web, especially about the 2nd question which is not easy at all without help.