Welcome to the Jalopnik Weekend Motorsports Roundup, where we let you know what's going on in the world of racing, where you can see it, and talk about it all in one convenient place. Where else would you want to spend your weekend?

We're now into March, and that means that the 2013 racing season is finally in full effect. Woo hoo! Those winter dead months were the worst.

This weekend, we have some really great racing on tap. There's NASCAR in Phoenix, Grand-Am in Austin, and Australian V8 Supercars in... um, Australia. That's not on American TV, but it is streaming on their website.

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As always, let us know about anything we missed, or about good livestreams out there, in the comments.

Photo credit Getty Images

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All times Eastern.

Saturday, March 2

Lucas Oil Off Road Racing Pro 4 and Pro Buggy

Speedworld Off Road Park

Surprise, Arizona

(Race from May 18)

4 a.m. on SPEED

NHRA Lucas Oil Drag Racing Series Winternationals

Pomona, California

(Race from Feb. 14-17)

8 a.m. on ESPN2

Continental Tire Sports Car Challenge

Circuit of the Americas

Austin, Texas

11 a.m. live on SPEED2

NASCAR Sprint Cup Subway Fresh Fit 500 Practice

Phoenix International Raceway

Avondale, Arizona

12 p.m. on SPEED

NASCAR Nationwide Series Dollar General 200 Qualifying

Phoenix International Raceway

Avondale, Arizona

1 p.m. on SPEED

NASCAR Sprint Cup Subway Fresh Fit 500 Practice 2

Phoenix International Raceway

Avondale, Arizona

3 p.m. on SPEED

NASCAR Nationwide Series Dollar General 200 Race

Phoenix International Raceway

Avondale, Arizona

4:30 p.m. on ESPN2

Rolex Sports Car Series Grand-Am of the Americas

Circuit of the Americas

Austin, Texas

5:30 p.m. on SPEED (Same-day broadcast)

Australian V8 Supercars Clipsal 500 Adelaide Race 2

Adelaide Street Circuit

Adelaide, South Australia

11 p.m. streaming live

Sunday, March 3

Monster Energy Supercross

Edward Jones Dome

St. Louis, Missouri

12 a.m. on CBS (Race from Saturday)

NASCAR Sprint Cup Subway Fresh Fit 500 Race

Phoenix International Raceway

Avondale, Arizona

3 p.m. on FOX

Ferrari Challenge at Daytona

Daytona International Speedway

Daytona, Florida

(Race from Jan. 27)

4:30 p.m. on SPEED