One thing on Hall's side is that all of his competition is up there with him beating themselves up. This will definitely be a war of attrition. The pack should start to get broken to pieces shortly after the half. Athlete tracker has hall on 2:04:27 pace at 10k. He was at 2:03:08 pace at 5k so they are slowing down a bit. Part of his training plan was to start his tempo runs hard on a downhill so I think he was training to be ready to take it out hard and beat people up early.
Women are the exact opposite of the men now. Running just under 6 min/mile at 10 miles....2:36ish pace.