Muoio finished sixth in the steeplechase with a time of 9:05. He finished in the same position a year ago in the same meet.
"It was okay," Muoio said. "I was hoping to do a little better."
"My best was an 8:59, so I was a little slower," he added.
Junior Dave Martin ran a 9:07 in the steeplechase, which was a personal record for him.
"I'm pretty happy finishing the season with a PR," Martin said. "Any time you get a PR, it feels pretty good. I was actually looking to break nine minutes, but I wasn't used to the hot weather, though."
Sophomore thrower John Kraay threw the shotput 16.6m, for an outdoor personal best. He also was the Crimson's closest male to qualifying this weekend, missing the mark by 2 cm.
Ciollo ran a 48.28 in the 400m open race.
Despite not qualifying anyone from the IC4A meet, the Crimson will send one male athlete to NCAAs.
Sophomore javelin thrower Chris Clever, who was the heptagonal champion, sat out the weekend to rest his arm.
The season is not over for many of the rest of the Harvard track athletes, however.
The team will be traveling to England as part of a combined Harvard-Yale squad this summer.
"The roster was determined after the Harvard-Yale meet in April," Ciollo said. "In most cases, the top two finishers in each event were selected."
On both the women's and men's sides, Harvard has more people going.
The squad will participate in four meets, with the most anticipated one being a meet against a combined Cambridge-Oxford team, a tradition that has happened biannually for more than 100 years.
"I think it's going to be great," Ciollo said. "For the seniors, it will be a great way to end a collegiate track career."