Lygna Opp is a short cross-country ski race in Innlandet, Norway. Riders begin in Gran and finish in the Lygna area. Held in September, the course covers approximately 18 to 18.5 km, making it a demanding, concentrated effort rather than an extended cycling event.
The participant list includes both competitive racers and recreational riders, with distinct categories for men and women, and age brackets ranging from teenagers to individuals in their sixties. Clubs such as Lillehammer CK, Raufoss & Gjøvik SK, Eidsvoll SK, Hadeland CK, CK Toten, and Follo SK are represented, contributing to a regional club competition atmosphere. September weather in Gran typically features cool temperatures, averaging between 10°C and 19°C, with overcast skies and a possibility of rain.