The scale of this race! They are less than halfway.
I think the transam is longer, but doesn't have such long stretches through virtually unsupplied regions.
My prediction; over the next 3 days, the 4 top riders will all start taking 4hour breaks in 24hour periods. Mike will yoyo closer to Kristof, then fall back as their breaks are out of sync. Weather, and possible mechanicals will determine if the order of the top 4 changes. Sarah has proven herself to be very strong and steady and is likely to take 3rd. If either of the top two have a disaster, she may well grab second.