Bikers and runners both young and old will take to Ames’ streets this Saturday night for the 32nd annual Midnight Madness races.

About 1,800 to 2,000 participants are estimated to take part in the festivities which include a 10K bicycle fun ride, a captain’s kid run, a 5K race and walk and the 10K featured race, said Roman Lynch, race coordinator.

Participants include both serious runners competing against themselves, as well as people just out to have fun, Lynch said. The 10K featured race includes many of the more serious runners, he said.

While most of the runners and bikers will come from across Iowa, Lynch estimates about 200 participants will be coming to Ames from out of state, including Minnesota, Nebraska and Missouri.

Seven Kenyan runners are also currently signed up to run in the 10K featured race, Lynch said.

Typically, about 600 Ames residents participate, about 100 of whom are ISU students, Lynch said.

Most of the students the race draws includes members of the ISU track team, Lynch said.

As of Wednesday, about 1,500 participants were signed up for Saturday’s events, a number which Lynch estimated will grow by about 250 to 400 people the day of the event.

The race begins on Fifth Street adjacent to the City Hall, stretches down to Haber Street and finishes just east of Clark Street and Main Street.

Construction throughout Ames has only caused a small percentage of change in the route from previous years, Lynch said.

A post-race party for participants featuring live music, an award ceremony, food, soda and beer will begin at 8 p.m. and last until 1 a.m. Sunday morning.

Wolfgang Oesterrich, who has volunteered for the Midnight Madness races since 1990 and will act in charge of corner marshaling this year, said he enjoys just being a part of the event.

“Sometimes watching the spectators is just as fun as watching the participants,” Oesterrich said.

Registration fees for the event are $25 and will be accepted up to the day of the race.

Events will begin at 6:30 p.m. Saturday