Group 1 - The article discusses how urban middle-class individuals are increasingly engaging in trail running as a form of identity construction and self-exploration [10][16][40] - Trail running has become a popular activity among the elite middle class, serving as a means of coping with the pressures of urban life and a way to reconnect with themselves [4][9][43] - The sport is characterized by its high barriers to entry, requiring specific gear and prior experience, which creates a sense of exclusivity among participants [12][15][19] Group 2 - The article highlights the evolution of trail running gear, from basic functional items to high-end, specialized equipment, reflecting a hierarchy within the community [24][38][39] - Participants often feel the need to showcase their gear and achievements on social media, indicating a shift from mere participation to a performance of identity [27][36][45] - The financial commitment to trail running gear is significant, with average annual spending reaching 16,000 yuan, emphasizing the sport's consumerist aspect [38][39] Group 3 - Trail running is portrayed as a method for middle-class individuals to escape the chaos of urban life, allowing them to find a sense of control and self-discipline [40][42][46] - The experience of completing a race is framed as a personal achievement, serving as a form of self-validation rather than competition against others [43][44][47] - The article concludes that trail running represents a complex relationship between personal fulfillment and societal expectations, where participants seek to reclaim lost opportunities from their youth [46][49]