I thought I'd post this here, as I know there's a few players on here :) I'll try to keep it updated. Handy to know what's coming up, if it's worth your time etc and sometimes they have 1-day only Forzathons
Just note that the start dates are US, so will likely start the next day here.
October 20
- Forzathon Unleashed Potential
Create a Bucket List in a Porsche to win the Porsche 959 - Forzathon Speed Test
Complete 5 Head-to-Head Races to win 3 Wheelspins & 35,000 XP - Forzathon Showing Your Best
Perform 5 Show Off Skills in a Porsche to earn 85,000 XP - Forzathon Rear Engine Domination
Get 3 Stars on a Speed Trap in a Porsche to receive 120,000 CR
October 27
- Forzathon Waiting For Delivery
Win a Championship in a Cult Classic to receive 85,000 CR - Forzathon Another Round
Complete 3 Playground Games to win 3 Wheelspins - Forzathon Don't Let Us Down
Get 3 Stars on the Mountain Top Danger Sign in a Mercedes-Benz to win the Mercedes-Benz 300 Sel 6.3 - Forzathon Working Hard
Perform 20 Drift Skills in a Mercedes-Benz to earn 35,000 XP
November 3
- Forzathon Venomous
Complete a game of Infected in a SRT Viper GTS to receive 225,000 CR and the Porsche 918 Spyder - Forzathon Survival
Survive a Public game of Infected to win 3 Wheelspins and the Dodge Dart HE - Forzathon Infernal Skill
Perform 5 Daredevil Skills to receive 120,000 CR - Forzathon Show Me
Complete a Street Race in the 1958 Plymouth Fury to earn 65,000 XP
The start dates here are the same as the US. However, its much later in the day. 6pm if I am not wrong.