# Octagon Ground Attack Challenge Balkan Open > Competition in Thessaloniki, Central Macedonia, Greece | October 12, 2025 ## Overview **Event Type:** Competition **Description:** Octagon Ground Attack – Balkan Open πŸ“ Thessaloniki, Greece πŸ“… Sunday, October 12, 2025 πŸ•˜ Weigh-in time: 10:00 AM Start of competitions:11:00, There will be a weigh-in on Saturday, October 11th from 6:00 PM to 8:00 PM at the Katsaneio sports hall. Get ready for one of the most exciting fight in the Balkans! The Octagon Ground Attack – Balkan Open returns to Thessaloniki on October 12, bringing together athletes from across Greece and neighboring countries in a dynamic showcase of Octagon Grappling, and Octagon MMA. All matches will take place on our brand-new 4 cm thick tatami mats. Open to competitors of all levels, styles, and affiliations, this tournament promises high-level action and a strong martial arts community spirit. βœ… Multiple weight and skill categories βœ… Professional organization & refereeing βœ… Hosted by Octagon Fighting Show βœ… Venue: Katsanio Indoor Gymnasium, Thessaloniki βœ… Registration: via Smoothcomp platform πŸ’° Payment will be made on the day of the event πŸ•˜ Doors open at 10:00 AM – Weigh-ins and first matches begin promptly. Be there early and ready! πŸ“£ This event is organized with the support of the Municipality of Thessaloniki, the Hellenic Institute of Culture,Health and Sports and under the auspices of the International Self Defense Organization (ISDO). Stay updated by following us on social media or visiting the event page on Smoothcomp. You will find the regulations on our website https://octagonfightingshow.gr/rules πŸ† A cash prize will be awarded in the Men’s Absolute Category: πŸ₯‡ 1st place: €300πŸ₯ˆ 2nd place: €150πŸ₯‰ 3rd place: €50 The minimum number of fighters in the division must be 8. Stay tuned for more updates! Part of the proceeds will be donated to the Special School of Kilkis. **Status:** Scheduled ## Dates **Start:** October 12, 2025 ## Location **Venue:** Thessaloniki **Location:** Thessaloniki, Central Macedonia, Greece ## Pricing **Price Range:** €25 – €30 ## Links - Registration: https://octagonfightingshow.gr/rules/ - Source: https://smoothcomp.com/en/event/25276 --- **Last Updated:** March 06, 2026 **Data Source:** BJJ.Space (https://bjj.space/events/octagon-ground-attack-challenge-balkan-open)