Major sports events include diverse competitions attracting significant participation, spectator interest, and media attention, ranging from global events like the Summer Olympic and Paralympic Games to niche competitions like the World Pickleball Championship (WPC). These events can be classified by several measures, including visitor numbers, broadcast reach, cost, and impact on host locations. Sports mega-events such as the Summer Olympic and Paralympic Games and men׳s FIFA World Cup are the most impactful, with global appeal and long-term effects on host cities, with the very largest of those termed giga events. Smaller-scale major sports events still attract substantial participation and influence local economies and societies. Hallmark events enhance local identity and tourism, while niche sports events cater to specific interests and can grow in popularity. Technological advancements like virtual and augmented reality are shaping the future of major sports events by enhancing spectator experiences. The integration of esports and the rise of multi-host events are emerging trends. However, global climate change poses challenges, particularly for winter sports, requiring adaptations in venue selection and event management. Major sports events significantly shape cultural, economic, and social landscapes by stimulating economies, fostering cultural exchange, and promoting urban development. They face challenges related to environmental sustainability, financial viability, and long-term community impact. Balancing spectacle and sporting excellence with sustainability and social responsibility is essential for organizers, hosts, and policymakers.<p></p>