Time to do the end of year PC cleaning - and since I didn't want to add another topic to the forum's main thread, I ended up here on the historical research
Anyway, originally, my goal was to write a text about this interesting race, but since my focus shifted to coverage of races in LAT-AM during the 60s and 70s, in addition to writing about the Formula Junior, I ended up shelving this project. I don´t want it to colect dust anymore, so I share with anyone who wants to go ahead with it.
So, I leave a starting point here if anyone wants to write and research about the International Challenge. This race was very unique, because it was one of the rare occasions in the 60s that drivers did not race for teams, but rather, for National Motorsport Federations (almost like a mini-World Cup for cars). So, instead of teams like Matra and a dozen private entries, as was common in F3 at the time, we see names like RAC de Belgique, FFSA or RAC of Great Britain on the entry list.
The race was held at Brands Hatch and the winner was Chris Irwin, in a Brabham BT18. Info about it can be found in both Autosport and MotorSport Magazines (plus some extra data in The Fastlane website).
Link to some stuff: https://drive.google...JBbxyGNX1sHLssu