Complex sentence: The event gathered 315 orienteerers in the first year and the participant record was in 2007 when there was 4 884 orienteerers in Kainuu Orinteering Week.
Split into simpler sentences: The event gathered 315 orienteerers in the first year. The participant record was in 2007 when there was 4 884 orienteerers in Kainuu Orinteering Week.