Step by step solution on how you can do this with a friend (or a second xbox) using the "Drift" method posted by ZR1
on 9th October 2017 as a comment on the excellent solution by FranconianX
Before you start, create a Design and a Tune for the car the other person will be using and get them to download, like and apply them. This will then count as 25,000 CR (100 CR + 500 CR + 122 x 200 CR) towards:
1. From the main menu, select Multiplayer
to Invite Friend
to your Multiplayer Hopper lobby.
3. Once they have joined your lobby, press
to Create Private Match
to select the Setup tab, then select Race Setup
5. Change the Environment
to "Mount Panorama Circuit - Bathurst Circuit".
6. Set Game Type
7. Set Max Drivers
to select the Advanced Rules
9. Set Number of Buckets
10. Set End Condition
to All Players In Bucket
to select the Group 1 Options
12. Check the Car Restrictions (for example I changed the Car Class to ANY).
14. Have your friend press
to Start Race
After the launch countdown has completed the race will start and end. Select continue then change to the next Environment
, remembering to press
to select each specific track. You will need to do this 122 times, and it will take around 2 hours. This doesn't have to all be done in one session, just remember to make a note of where you got up to.
If you find the World Traveller achievement tracker progress is not updating (as it did not for me), switch to the Forza Motorsport 7 Game hub and change to the Progress tab, then switch back.