Ilium by Dan Simmons.
This Hugo Award-winning retelling of the Odyssey takes place on a distant-future Mars, where a post-human species forces the characters of Homer’s epic to reenact the events of the poem, choreographed by Simmons’ narrator, a 20th-century Earth scholar resurrected through bits of his DNA.
The novel is “just as unwieldy and pretentious as it sounds,” Kirkus Reviews wrote back in 2003. “But Simmons never lets the story get away from him, using copious amounts of wit to keep the action grounded.” Buy Ilium from your local bookstore.