Start: Son La, Vietnam
End: village, name unknown, 10km south of Moc Chau on road to Cua Khao on the Vietnam-Laos border
Distance: 133 km
Avg: 18.2 k/h
Max: 60 k/h
Total: 4847 km
Total riding days: 55
Riding hours: 0745 - 1720
Look at that downhill between Son La and Moc Chau. I don't think I've ever hit 60 k/h on a laden bike before.
This road must have been designed by M.C. Escher. It follows a river, upriver, for about 20 km and yet the road is consistently downhill, without ever changing much its height above the river level.
The reverse scenario, in which uphill roads follow rivers downstream, is well known and understood by cyclists, if not physicists, but I believe this example, of the magic working in the cyclist's favour, to be unique.