GLADSTONE — The Shamrock Shake-Up indoor triathlon will be from 7 a.m. to noon March 8. Registration is now open.

The triathlon is suited for beginners and seasoned triathletes. Those participating need to be 16 and older.

The triathlon starts with a 10-minute swim followed by cycling on a stationary bike for 30 minutes and then a 20-minute run or walk.

Volunteers will record the total distance covered during the swim, bike and run. The more distance covered, the higher the participant will rank.

Heats start at 7 a.m. and start times will be available on Wednesday, March 5.

Registration is available through March 2. <n>Register at gladstonemo.activityreg.com.