Here are some U.S. events that offer start-ups a host of opportunities in terms of motivation, education, financial support and exposure.

Startup World Cup
$1 million grand investment prize.

G-Startup Worldwide
Regional competitions; Global Final Competition grand prize winner gets $250,000 investment.

PITCH: The Battle of the Startups
Open to startups exhibiting that have received under $3 million in funding to date and have not had a discernible change in business model in the previous three years.

Pitch competition for tech start-ups.

U.Pitch Competition & Showcase
Elevator pitch competition for students. Prize pool of $10,000.

TechCrunch Disrupt Startup Battlefield Competition
Winner gets $50,000 prize.

SXSW Accelerator Startup Competition
Company pitches.

For some competitions limited to specific locations or ethnic/cultural groups: