Complex sentence: The winner is the first rider to cross the finish line (without having been "lapped"), and events often have prizes (called "primes", usually cash) for winning specific intermediate laps (for instance, every 10th lap).
Split into simpler sentences: The winner is the first rider to cross the finish line (without having been "lapped"). Events often have prizes (called "primes", usually cash) for winning specific intermediate laps (for instance, every 10th lap).