KATHMANDU: Tribhuvan Army Club is organising the third CoAS Open Marathon on February 10 next year. The event features five categories — Marathon (men), Half-marathon (men, women, veteran), 3.10km (Army officers and foreigners), 4.5km (open and school children) and 5.5km walkathon, informed the organisers. The top three athletes in marathon will receive Rs 100,000, Rs 50,000 and 25,000 respectively. Likewise, the top three in half marathon event will earn Rs 25,000, Rs 15,000 and Rs 10,000 respectively. Other winners will also get their share of cash prizes.