NRS 466.155: Wagering outside enclosure or licensed establishment prohibited.

1. It is unlawful for any person to operate a system of pari-mutuel wagering on any licensed horse race at any location other than:

(a) The enclosure wherein the race which is the subject of the wagering occurs; or

(b) A licensed gaming establishment which has been approved to conduct off-track pari-mutuel wagering.

2. All other forms of wagering or betting on the results of any of the races licensed under this chapter outside the enclosure or licensed establishment are also illegal, unless expressly authorized by the Commission.