Top executives from Overstock.com, eBay, ChannelAdvisor and other firms will make presentations about online auction tactics and strategy at the second annual “Marathon” conference put on by ChannelAdvisor.

The conference is set for May 11-12. The program includes presentations, case studies from scores of businesses about best practices, and networking.

Speakers include Patrick Byrne, chief executive officer of Overstock.com; Diane Rinaldo, director of strategic alliances for Overture Services; Susan Phillips, senior director of marketing at eBay; Scott Wingo, CEO of ChannelAdvisor; and Todd Rath, chief marketing officer of Rock Bottom Golf.

“At the second annual Marathon Conference small business merchants will discuss benefits and challenges for growing businesses selling on the web’s leading marketplaces,” Wingo said. “There is simply no other event where attendees can learn how small businesses and top eBay sellers succeed, and they can interact one-on-one with representatives from the leading online marketplaces and shopping engines.”

For details or to register for the conference, see: www.channeladvisor.com/marathon/