Yeah – Tempus Fugit is nice, but it’s an out-and-back, with less than 8 km of actual roadway. I know, we’re incredibly spoiled here, and it’s easy to ask for more-more-more, but a long loop would still be nice.
I realize the Watopia map is subject to expansion, but it appears the peninsula with Col de Zwift is roughly ellipitical, with an (extrapolated) 6 km major axis, and a 4 km minor axis, and the perimeter is thus around 30 km, so a convoluted road would be near 40 km around. Access would probably be another 3 km. The most direct access would be provided by the jungle pens (but going the opposite direction).
Here’s an example of what I’m thinking, showing only the coastal road, none of the inland hill options:
It crosses the L’Alpe de Zwift road, proving a paved option for reaching that.
If you wanted to add another epic climb, Monte Zoncolan is 4 km as-the-crow-flies from bottom to top, so that would fit to the west of the peak, and with a long coastal road needed to reach the base, would provide an added challenge.
BTW here is the Kona course profile, so not flat, but also an island coastal road, so this sort of profile would map nicely:
