The phrase "a contest that includes" is correct and usable in written English.
You can use it when describing a contest that has specific elements or components as part of its structure or rules.
Example: "The annual science fair is a contest that includes various categories such as robotics, chemistry, and physics."
Alternatives: "a competition featuring" or "a challenge that encompasses".
Instead, Oslo won the right to host the 1952 Games in a contest that included Cortina d'Ampezzo in Italy and Lake Placid in the United States.
The candidates spent several million dollars more in the final weeks of a contest that, including Mr. Giuliani, turned out to be the most expensive Senate race in history.
To celebrate, they're running a $1000 gadget contest that includes a Nexus 95mv Wicked Laser, a solar powered cell phone charger, a pair of MP3 sunglasses and various other prizes you can read about on their contest page.
In the middle of all the despair over the great issues troubling the Middle East, supporters of Israel and the Palestinians are slugging it out on the Internet over the outcome of a little-known photo contest that includes a picture of a Palestinian boy huddling by his father moments before the boy was killed.
It comes after a corporate contest that included the rejection of a first offer from PepsiCo, a preliminary bid from the Coca-Cola Company that was rescinded after Coke's board blocked the deal and maneuvers by Danone of France that were eventually abandoned.
When Candace Parker was in high school, she won a dunk contest that included the future N.B.A. players Josh Smith and J.R. Smith.
In a widely publicized contest that included open house events where the public could tour and learn about the competing historic sites, $1 million was available for preservation efforts in the Chicago metropolitan area, but the fountain was not one of the 15 winning candidates.
"So I jumped over it, and I kind of looked at them and they are like, 'All right, you can do it.' " It was an entertaining dunk contest that included stuffed animals, crafty names and multiple dunks in one jump.
Of course, MSNBC was all over it, showing the cleaner clips from a video of the 2007 Miss Buffalo Chip contest that included booty-shaking, banana-fondling, pickle-licking and (this last even MSNBC host Keith Olbermann had to skip) simulated fellatio.
