Prediction: By December 31, 2030, a humanoid robot will complete a 13.1-mile (21.1 km) half marathon in under 2 hours.

Pass/Fail Criteria:

1. The event must be a legitimate half marathon recognized by local race authorities.

2. The robot must run on two legs with no external power supply.

3. Official chip time or race clock must show under 2:00:00 at the finish line.

4. Must be documented by official race organizers or credible local media.