Ryan Hall completes marathon career with World Marathon Challenge. | World Marathon Challenge

Severe weather targets Florida and Southern Georgia this Sunday. A squall line brings a risk of damaging winds and tornadoes from Jacksonville to Valdosta. The main danger window is afternoon through evening. Have a safety plan ready and keep your weather alerts turned up loud. | Ryan Hall, Y'all

After the TUE/WED severe weather event, I'm focused on the next storm which may bring snow to many around Christmas. | Ryan Hall, Y'all

We are live tracking a tornado warning in Indiana and severe weather across the region. I am using real-time viewer data to see exactly who is in the path of the storm. If you are in the Midwest, you need to tune in now for critical updates. https://www.youtube.com/watch?v=ErWPNZ1IsDc | Ryan Hall, Y'all

Slow Motion Video of Ryan Hall Running at 2:03 Marathon Pace on Instrumented Treadmill at Southern Methodist University Locomotor Performance Laboratory The Locomotor Performance Laboratory at Southern Methodist University (SMU) has done some amazing slow motion videos of elite distance and middle distance runners and sprinters. Below is a slow motion video of Ryan Hall, one of the fastest US marathoners of all time. Hall is seen here running on SMU's instrumented treadmill, which has a force pl