I came across this the other day https://www.transdinarica.com/something ... the-route/

Interestingly you can buy navigation packages for the route which tbh seems quite reasonable.
https://www.transdinarica.com/get-navigation-info-pack/

Considering the ticket price (and info provided) for certain events....thats almost a bargain!!!

And i guess the cost could be shared amongst a group.
One to add to the to-do-list (although at 94500m of climbing it would take me a few months!)

Really enjoyed my time on the Trans Balkan Race (injury aside), so would love to do something like that.

Sadly I'd realistically never be able to spare the time to do the whole thing though.