Part I: The Humble Beginnings

The narrative of the Tour De France began in 1903. It emerged from the fierce competition between sports newspapers in France - notably L'Auto and Le Velo. As readership wars escalated, there was a growing necessity for absorbing content. Henri Desgrange, editor of L'Auto, devised a masterful plan: a cycling race that was more strenuous and prolonged than any other before. Thus, the concept of the Tour De France was born.

Part II: The Race That Captivated The World

The first Tour de France, consisting of six mammoth stages for a total of 2428 kilometers, ran from July 1 to July 19, 1903. The race became an immediate sensation. Embracing this innovative design, 60 intrepid cyclists showed up for the grueling event. Maurice Garin, nicknamed 'The Little Chimney-Sweep' due to his previous occupation, emerged as the first champion of the Tour De France.

Part III: Evolution and Transformation of the Tour De France

The Tour has since evolved considerably both in structure and rules. The initial era involved riders fixing their cycles during the grueling journey. Now, the event involves multiple teams professionally staffed with riders, strategists, and bike mechanics.

Over the years, the Tour de France has grown from a primarily French event to a worldwide phenomenon, attracting the best cyclists globally. The race has survived two World Wars, with tenures of interruption, and continued to push and evolve the sport of cycling. It is seen as the ultimate test of endurance, strategy, and skill.

Conclusion: The Legacy Continues

Despite its alterations, the ethos of the Tour De France remains the same: endurance, courage, and resolve. It's a spectacle where everyday men rise to achieve the extraordinary, pushing the boundaries of human capability. After more than a century, the Tour continues to captivate hearts - an epitome of sheer will and pedal power. The majestic beginning of the Tour De France indeed engineered a legacy that transcends time.