First half marathon with Shokz OpenFit Pro

January 18 was a milestone for me: I ran my first half marathon at the Hong Kong Marathon.

For race day, I chose the Shokz OpenFit Pro. I was genuinely curious — and a little proud — to see how an open-ear design with noise reduction would behave in a real marathon environment: crowds, wind, announcements, and the shifting noise of the course.

This was not a lab test. It was 21.1K of movement, sweat, glasses, pacing, and the kind of fatigue that makes small product details suddenly matter.

I still checked the fit before the start. That is the honest boundary for race use: I do not want to think about a product during the run, so I pay attention to the small setup moment before it disappears into the background.

Three things stood out. First, stability over distance. Even with glasses, I did not need to adjust the fit once the race started. Second, comfort. Open-ear listening meant no sealed-ear fatigue over a long duration, which mattered more than I expected. Third, cleaner sound at a lower volume. With noise reduction on, I could keep the volume lower and still hear music and pace prompts clearly, while staying aware of what was happening around me.

I also noticed other runners using AirPods Pro and even AirPods Max. Traditional ANC can be extremely effective, but for a long race there are obvious trade-offs: in-ear sealing discomfort, or simply carrying extra weight for more than two hours. For me, open-ear plus noise reduction hit a better balance between awareness and focus.

The small details I trusted most were not dramatic: whether the frame stayed quiet with glasses, whether pace changes made the fit feel different, whether the sound helped without pulling me away from the course, and whether awareness mattered more than immersion.

What stayed with me after the race was not just that the product felt stable. It was that long-duration use makes honesty unavoidable. If something presses, slips, overheats, distracts, or adds fatigue, a race is long enough for it to become obvious.

That race reminded me of something I care about in engineering work: product experience becomes most honest in long, messy, real-world use.

Takeaways