Jumping, dressage, para-dressage, eventing, driving and vaulting will take place at the German venue; Al Ula in KSA will host endurance.
The leaders hold fast to their spots at the top of the leaderboards, while others have made significant leaps up the world rankings.
Canada sits second and Brazil third heading into cross-country; designer Pierre Le Goupil describes his course.
Camille Carier Bergeron and Sound of Silence 4 performed a beautiful freestyle to wrap up the dressage portion of the Games.
The young American squad came out with guns blazing, winning the country's ninth Pan Am Games Dressage team title.
Team Canada won the bronze medal and the all-important 2024 Olympic qualification, while USA won gold and Brazil silver.
The Swedish rider won the opening leg of the FEI Dressage World Cup 2023-2024 Western European League, and three other classes that week.
A super test from the last rider, João Victor Marcari with Feel Good VO, saw Brazil overtake Canada for second place at the Pan Am Games.
Competitors stepped into the arena at Quillota for the Prix St Georges and Grand Prix as the Pan Am Games got underway in Chile.
Equestrian sports promise to be hotly-contested, with a number of precious Olympic berths up for grabs: Canada needs to capture all three.