Really simple achievement here!
This can be done in private (confirmed by lepongistefou, thanks man!)
First of all, grab 1,2 nor 3 friends with you (a random will do too).
Then simply select multiplayer match, invite your friend(s) or find a random. Choose a WRC car (they are faster) as the VW Polo R, select the Alwen race from the Walles (GB) rally which is only 2,17km.
to get ready, just race trought the stage.
(I personnaly beat this race in 1min20s so it's pretty fast!)
Once the race is finnished, press
to continue to lobby.
Once in the lobby rinse and repeat 10 times, you should get this achievement in 15min or so.
This way you'll earn the "Online Visitor" and the "Online Tourist" achievements. You can also combine these cheevos with the "Online Victory" wich consist in winning an online race.
Hope this should help some of you!
(As I'm French, my English isn't perfect so please consider that)
If you thumb down, please explain why. And if you see something I should add to this guide, let me know.