Kelly, 38, of Little Rock, collapsed at mile 11, around 11:30 Sunday morning. He died after being taken to UAMS.
The coroner says toxicology reports that will take weeks to complete should pinpoint what happened to Kelly.
Meanwhile, UALR, where Kelly worked, has released details about his funeral services which are being held on Thursday.
He worked as a network technician in UALR's Information Technology Services Department.
Kelly joined UALR as a lab assistant in the student library lab while pursuing a bachelor's degree. He was hired full-time in the Desktop Support Group in 2007. Kelly was promoted to his current position in 2009 where he was responsible for maintaining the university network. He also was working on his master's degree in information quality.
"Mike was a conscientious, dedicated person who did a great job at whatever task he was assigned," said Dr. Jeannie Winston, vice chancellor for information services. "He was a valuable member of our UALR family and will be missed."
Kelly is survived by his wife, Ebony Kelly, an administrative assistant in the Department of Information Science.
Visitation will be from 6 to 8 p.m. Wednesday at Little Rock Funeral Home, 8801 Knoedl Court, Little Rock, with the funeral at 11 a.m. Thursday at Mosaic Church of Little Rock, 6420 Colonel Glenn Rd.
Click here for Kelly's full obituary and online guestbook for condolences.