The high volume of motorcyclists in the Austin area for the Republic of Texas Biker Rally led to an increase in motorcycle-involved crashes over the weekend, authorities said, but no fatalities had been reported by the close of the annual event.

The rally, centered at the Travis County Exposition Center in Northeast Austin, is billed as the largest motorcycle rally with paying, ticketed attendees in the United States. The event has been known to draw 200,000 attendees, although only about 35,000 typically have tickets.

The rally kicked off Friday with a parade that started at 7:45 p.m. at the Expo Center, headed south on Decker Lane to FM 969/East Martin Luther King Jr. Boulevard before rolling through East Austin neighborhoods and ending at the State Capitol on Congress Avenue. The rally concluded Sunday morning after a church service.

By Sunday afternoon, Austin-Travis County Emergency Medical Services officials had reported a total of seven motorcycle accidents spread across Friday, Saturday and Sunday, with nine individuals receiving treatment.

Four of the crashes resulted in serious injuries, according to EMS officials.

On Friday, a woman estimated to be in her 50s was taken to Dell Seton Medical Center with serious, not life-threatening injuries after a motorcycle vs. vehicle crash along Barton Skyway around noon. Officials did not disclose if the woman was driving the vehicle or the motorcycle.

A man in his 30s was taken to South Austin Medical Center with serious, not life-threatening injuries after a crash at 4900 McKinney Falls Parkway at 7:11 a.m. Friday.

A man and woman were taken to Dell Medical Center on Friday with serious, not life-threatening injuries as a result of a crash at 7311 Decker Lane around 7 p.m., just before the parade kicked off. Officials did not have information on their ages.

On Sunday afternoon, three people — two with serious but not life-threatening injuries — were taken to Dell Seton Medical Center after a motorcycle wreck in Northeast Austin near the Expo Center.

Last year, within the first 24 hours of the rally, Austin-Travis County EMS medics reported at least eight motorcycle wrecks, with 10 riders being treated. Two of the incidents resulted in major injuries, medics said at the time. Three people were hospitalized the first night after two motorcycles crashed into each other outside the Expo Center.

In 2017, 14 motorcycle crashes resulted in one death and seven people being taken to hospitals. Raul Diaz Jr., 28, was killed that year after a pickup truck collided with his motorcycle on FM 973 in eastern Travis County. The driver of the pickup was arrested for intoxication manslaughter and intoxication assault.

Staff writer Brandon Mulder contributed to this report.