NEW YORK — Thousands of fans roared as New York Giants quarterback Eli Manning hoisted the team’s Super Bowl trophy from a glittering blue-and-white float this morning as the victory parade made its way down the Canyon of Heroes, where the city has honored stars for almost a century.

The parade set off from the southern tip of Manhattan and moved slowly north to City Hall as fans dressed head-to-toe in Giants gear cheered and confetti wafted slowly down from the high-rises that line the street.

Manning, joined by coach Tom Coughlin, Mayor Michael Bloomberg, Gov. Andrew Cuomo and other teammates, waved and grinned from the float as a deep roar rose from the crowds. The team will be honored with symbolic keys to the city at a City Hall Plaza ceremony.

Some fans waited since 6 a.m. to catch a glimpse of their favorite players. About half of a Long Island high school class skipped school to see “a whole nation coming together in one place — this parade,” said Mike King, 16, of Wantagh, N.Y.

The parade for the Super Bowl champions will have an estimated economic impact of up to $38 million for the city, depending on the number of spectators, Bloomberg said. As many as 1 million are expected — about a third of them from outside New York.

After the parade, the team will travel to New Jersey for a 3 p.m. rally at MetLife Stadium.