Kalimdor: Bronze

For anyone who's looking for this, it doesn't start until mid August, sadly.

"Rediscover Kalimdor's skies with a new dragonriding racing event arriving to Azeroth and running from August 15–28. Challenge 16 races across Kalimdor in Normal, Advanced, and Reverse variations to earn Riders of Azeroth Badges to exchange for rewards from Maztha."

Best-ish route, with waypoints (from Orgrimmar):

/way Azshara 67 26 Rocketway Ride
/way Winterspring 68.6 68.2 Winter Wander
/way Felwood 58 11 Felwood Flyover
/way Mount Hyjal 56.3 28.2 Nordrassil Spiral
/way Mount Hyjal 21.6 54.5 Hyjal Hotfoot
/way Ashenvale 36.7 30.7 Ashenvale Ambit
/way Stonetalon Mountains 66.4 87 Webwinder Weave
/way Desolace 28 63.2 Desolace Drift
/way Feralas 64.1 54.4 Feralas Ruins Ramble
/way Silithus 39.1 84.3 Ahn'Qiraj Circuit
/way Uldum:Kalimdor 55.4 42.5 Uldum Tour
/way Un'goro Crater 53.1 93.3 Un'goro Crater Circuit
/way Thousand Needles 9.4 17.5 Thousand Needles Thread
/way Southern Barrens 42.5 93.2 Razorfen Roundabout
/way Southern Barrens 41.2 13.1 Great Divide Dive
/way Durotar 56.5 63 Durotar Tour

To identify missing race achievements, find this excellent script here.

For those like me who are wondering how to start this achievement, it's a seasonal event that runs 2 weeks every year.

The next Kalimdor race series starts on the 9th January 2025