On Saturday, festivities begin with The Arc Grand Prix Run, an early-morning, 3.4-mile run on the internationally acclaimed race course. The event, which will benefit The Arc of Schuyler, a not-for-profit organization providing support to people with intellectual and developmental disabilities, including autism, includes a one-mile walk for walkers.

Starting at 10 a.m. the public is invited to drive around the course in their own vehicles, purchase professional photos of their cars on-site or on the web and take photos in Gatorade Victory Lane, where drivers at the Glen celebrate. Proceeds from the $25 per vehicle fee will be donated by WGI to Autism Speaks, the world’s leading autism science and advocacy organization.

Spectators are welcome at Friday’s Toyota Green Grand Prix. Admission is free. Pre-registered drivers of alternate-fueled vehicles, hybrids and traditional gasoline-powered and diesel-powered vehicles will be participating in a two-stage rally offering challenges and fun on the race course and on public roads. Individuals, colleges and universities, car clubs and manufacturers are all invited to participate.

The NYElectrathon races, on a course set up in the race track’s south parking lot, are expected to attract high school teams from across New York. The students build, maintain and drive the single-seat electric vehicles.

The Doris Bovee Memorial Road Rallies start in the morning with a 100-mile, fuel economy event completely on the 2.45-mile short course at WGI, which has hosted competitive racing events since 1957. The second stage, in the afternoon, will tour public roads with the focus on precision driving. Both segments will be conducted at highway speeds.