badkneeski, you got me really tempted to book like you did, as well!

I have a RT from GRU-DFW-HKG at the beginning of April
I got the idea to do the same as you, but adding the initial in GRU.

GRU-DFW-HKG-SIN OJ CGK-NRT-ORD-DFW

At Great Circle Mapper it states 30,628 miles :-)
Not bad!