29th Junior National Athletics Championships will kick off in Bangalore today. Around 2,000 athletes from across the country are expected to take part in the championships.The five-day meet, will have 125 events in eight age-group competitions, four for boys and an equal number for the girls.Athletes who excel in the meet will be selected for the national junior camps and thereafter for next year's Asian Junior Championships in Chinese Taipei and World Junior Championships at Eugene, United States.