What obstacle will participants encounter in Race 4?

In Race 4, the presence of a wall as an obstacle challenges participants by requiring them to find ways to overcome or navigate the obstruction. Walls typically present a significant physical barrier that cannot be simply run around or bypassed, and they often demand a combination of strength, technique, and strategy to scale or maneuver over. This adds an extra layer of difficulty to the race, as participants need to assess their individual abilities and decide whether to attempt to climb over, go around, or utilize tools or assistance to get past it. The specific nature of a wall as an obstacle emphasizes the importance of physical skills in addition to maintaining momentum during the race, making it a unique challenge compared to other types of obstacles that might be encountered.