the best place to ride in southern ontario

Welland has TONS or riding areas. The St lawrance seaway has a trail system up to Thorold and the welland county motorcycle club has a nice lil MX track just 10 minute ride from the seaway area.

Turkey point, St williams and surounding areas have tons of trail systems. Its a really popular with the ODSC and atv clubs.
Also gopher dunes MX track is only another 30 minutes

Parry sound has one of the largest trail systems in Ontario. Endless trails. I grew up in Sprucedale (whitehall) and had a trap line and live bait line that spread out over 60 miles of trails that I ran everyday on either my dirtbike or Blaster. On weekends I would often take the Seguin trail out to Parry Sound to Jolly Roger. Another great rip was the Seguin E to kearny back into Algonqin park.