The CVRPLIB team is launching a 30-day competition to push the boundaries of the Capacitated Vehicle Routing Problem (CVRP): https://vrp.atd-lab.inf.puc-rio.br/index.php/en/bks-challenge
* The focus: our new XL benchmark set - 100 diversified and realistic CVRP instances with 1,000 to 10,000 customers.
* The goal: find exceptionally high-quality solutions, ideally just a few units away from the unknown optima.
* The setup: a real-time Leaderboard will track progress for each instance and globally. Certificates will be awarded to the overall winner and to teams finding final BKSs.
Show the strengths of classical, ML-based, or hybrid optimization approaches!
Key dates:
Aug 24, 2025 – Official announcement, training instance generator released
Dec 12, 2025 – Team registration opens
Jan 12, 2026 – Competition starts (official XL instances released)
Feb 11, 2026 – Competition ends
We look forward to seeing the community take on this challenge!
Organizers: Eduardo Uchoa, Rafael Martinelli, Eduardo Queiroga, Thibaut Vidal, and Anand Subramanian