I believe I’m one of those 3-5 people.
I found a few westbound routes on Ride with GPS. This is one of the most recent and comprehensive.
https://ridewithgps.com/routes/26560514
2018-02-04 13:17:07
I’m in again with my friend, Adam – assuming I can gain a little fitness by 4/26. Not here to win it, so anything under 48 hours is the goal.[smartasshaton] Shawn, 20 hours is under 40 hours and it's good goal! :) [/smartasshatoff] Good luck to all you guys!