From a press release:

On Sunday Oct 12, Mark Ledesma set a new lap record of 1:38.6 during a TrackTime practice session at the 2.3 mi. Arizona Motorsports Park.

Ledesma aboard his North Valley Honda CBR 954 was gearing up for the upcoming AZROADRACING.COM
UNLIMITED GP on Oct. 19. Ledesma plans on taking home his share of over $8000 in prize money posted in the 6 feature sprints.

For race info go to azroadracing.com