Al-Khums Shuhada Libya Popular Horsemanship Festival in Al-Khums
A 'Shuhada Libya Popular Horsemanship Festival' specifically in Al-Khums could not be confirmed. Al-Khums is a real coastal city in Libya's Al Marqab District and home to the ancient Leptis Magna ruins; a Shuhada' racecourse associated with horsemanship is documented nearby in Misrata rather than in Al-Khums itself.
Al-Khums is best known internationally for something other than horsemanship: it sits beside Leptis Magna, one of the most complete Roman-era archaeological sites on the Mediterranean coast, a UNESCO World Heritage location that draws visitors for its ruins rather than for equestrian events.