Long-distance running event over marathon distance.

Endurance race typically exceeding 50 kilometers.

Competitive run beyond traditional marathon limits.

Non-standardized running challenge of extreme distances.

Event focusing on mental and physical stamina challenges.

To compete in an ultrarunning race.

To finish a long-distance running event.

To train for ultramarathon distances.

To engage in endurance trail running activities.

To participate in extreme distance challenges or events.