Lance Armstrong doing XTERRA triathlon

KAPALUA, HI (BRAIN) — Lance Armstrong will compete in the XTERRA Worlds off-road triathlon.

"XTERRA World Champs next wknd. I'm in! Looking fwd to racing," the seven-time Tour de France winner tweeted Sunday, a week before the swimming, cycling and running competition in Maui.

Last month in Colorado, Armstrong was fifth in the XTERRA USA Championship, finishing the 1,500-meter swim, 17.7-mile mountain bike ride and 6.1-mile trail run in 2 hours, 29 minutes, 25 seconds.