Colossal Racer is my largest K'nex roller coaster build to date. It's modeled after a racing style wooden roller coaster.

The video spans 10 hours of building.

Stats:
Roller coaster height: 88 Inches (2.24 meters)
Track length per side: 141 Feet 3 Inches (43.05 meters)
Ride duration: 56 seconds
Estimated building/project time: 400-500 hours

Music:
Cloud Patterns - Silent Partner
Rock on Chicago - Kevin Macleod
Energetic - Silent Partner