TULSA — The IRONMAN North American Championship Tulsa triathlon is happening this weekend.

The River Parks Authority says it will be closing trails on the east side of the Arkansas River on Sunday.

“Approximately 2,500 triathletes from around the globe will be running on our trails and we look forward to showcasing our beautiful park for them,” said Matt Meyer, Executive Director of River Parks Authority.

Trails on the east side of the Arkansas River will be closed to all but race participants.

“River Parks will be hosting 20+ miles of the marathon portion of IRONMAN and is excited about this amazing endurance race,” said Meyer.

Many of the parking lots along Riverside Drive will be closed too.

Spectators can watch the race from the grass.

The trails will reopen on Monday, May 24th at 5 a.m.

Cox Media Group