It's not the result of a man’s actions that determine his success or failure. Rather, success is defined by the motives that have propelled him forward. Anyone can reach the goals placed before them, but not everyone comes forward with a God-honoring heart and intentions.
If you have failed to set your motives right, not focusing on bringing glory to God, then, no matter how well you think you have accomplished your task, you have none the less failed altogether.
“I believe God made me for a purpose, but he also made me fast! And when I run I feel his pleasure.” (Eric Liddell)
Likewise, you should not measure your success or failure on the accomplishments of those around you. Success is based off how far you yourself have come. If you measure your success on the achievements of others, you have (no matter how far you have come) failed to succeed.
“In the dust of defeat as well as the laurels of victory there is a glory to be found if
one has done his best.” (Eric Liddell)
So no matter what you do (in this case running) I challenge you to pray and ask God to help you set your motives straight, looking to Him and praising him in both your failure and success.