**2017 Big D Marathon Cancelled Due to Weather**
The Big D Marathon course has long stretches that are flat; however, there are some hills especially between miles 10 and 22. After the late hills, it is downhill to the finish.
The race can be challenging since the Dallas weather in April can be warm. With the likelihood of warm or hot weather, coupled with a rolling course, a PR or qualifying for the Boston Marathon may be difficult.
The Big D Texas Marathon was the 146th largest marathon in the U.S. last year and was the 117th largest in 2015.
Last year 4.7% of finishers qualified for the Boston Marathon and 2.8% of runners qualified for Boston in 2015.
This gives the Big D Texas Marathon the 392nd highest percentage of Boston Marathon qualifiers in the U.S. last year and the 422nd highest percentage in 2015.
Its Course Score of 98.31 ranks it as the 288th fastest marathon course in the U.S. and the 20th fastest course in Texas.
The typical race time temperature and humidity levels are above the ideal range for optimal marathon performance. This, coupled with the Course Score, gives the Big D Texas Marathon a PR Score of 97.43. This PR Score ranks it as the 309th fastest marathon in the U.S. and the 20th fastest in Texas.
Learn more about PR Scores and Course Scores on the FAQ page.