Competitor Group’s Rock ‘n’ Roll Marathon is a big part of the company’s endurance sports empire.

Competitor Group’s Rock ‘n’ Roll Marathon is a big part of the company’s endurance sports empire.

COMPETITOR GROUP INC.

CEO: Peter Englehart.

Revenue: Would not reveal but reportedly will be 50 percent greater in 2011 than 2010.

No. of local employees: 180.

Investors: Falconhead Capital LLC.

Headquarters: Sorrento Mesa.

Year founded: 2008.

Company description: Endurance sports media and event management.

In the marathon business retaining customers is a recurring challenge...

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