The following description comes from the event organizer.Beginning the season of the greatest show on dirt. Thursday Night Motocross is a Portland tradition, with nearly 200 riders competing weekly under the lights. Gates open at 4 p.m., practice at 5 p.m. and first moto at 6 p.m. For more information go to www.thursdaynightmotocross.com.
Hours: 4 p.m. to 10 p.m.
Sound limit: 103 dB