1. 2018 Ironman Chattanooga, Sept. 28-30 sports competition by the World Triathlon Corp., 11,500 attendees with a projected economic impact of $14.6 million.
2. 2018 Biennial International Assembly by the Church of God of Prophecy international, July 13-22, 8,000 attendees with a projected economic impact of $7.4 million.
3. 70.3 Ironman competition, May 18-20 sports competition by the World Triathlon Corp, 6,250 attendees with a projected economic impact of $4.6 million.
4. 2018 Head of the Hooch, one of the largest rowing regattas in the United States, 16,000 attendees with a projected economic impact of $2.8 million.
5. Southern Association for Performance Arts 2018 event, April 6-7, 5,000 attendees with a projected economic impact of $2.8 million.
6. Campus Outreach Ministries regional New Year's Conference, Dec. 26-31, 2,000 attendees with a projected economic impact of nearly $1.5 million.
7. AAU Girls Basketball State Champs by the Amateur Athletic Union, May 11-13, 6,175 attendees with a projected economic impact of $1.2 million.
8. National Association of County Agricultural Agents Professional Improvement Conference, July 25 to Aug. 4, 1,200 attendees with an economic impact of nearly $1.2 million.
9. BPA Baseball World Series by the National Softball Association, June 27 to July 1, 2,070 attendees with a projected economic impact of $1.1 million.
10. TEN Hot Rod Power Tour, June 10-11, 5,750 attendees with a projected economic impact of $1.05 million.
Source: Chattanooga Area Convention and Visitors Bureau