# Stryd 在馬拉松比賽中距離較長或短？

Stryd 希望大家開箱時就是非常準確無需校正，當然也會有例外。如果您參加了馬拉松（或其他比賽）並發現 Stryd 沒有測量準確的距離，可以參考以下方式調整：

1. 檢查手錶的設定
2. 將 Stryd 與手錶數據進行比較。
3. 馬拉松路線至少 42.2 公里。如果賽事有認證，實際跑出一定是超過這個距離（因為您一定會去喝水、閃人、上廁所等。
4. 確認你的 Stryd 沒有隨著跑步時晃動或是移位。一個例子是 [Nike Next%](https://support.stryd.com/hc/en-us/articles/360044274654-How-do-I-attach-my-Stryd-pod-to-the-Nike-Vaporfly-4-and-Nike-Next-) 的鞋帶，它可能導致 Stryd 移動到腳的一側。
5. 微調 Stryd 速度/距離：

* 前往賽道。以比賽速度穿著您的比賽鞋跑步。

{% content-ref url="/pages/-LsJiyah4tFWq0d\_95Mc" %}
[距離和校正](/stryd/qa/distance-and-calibration.md)
{% endcontent-ref %}

* 無法訪問軌道？使用[Garmin 自動校準功能](https://support.stryd.com/hc/en-us/articles/4410314991767-Using-the-Garmin-auto-calibration-feature-to-fine-tune-your-Stryd-)。
* 您可以使用 Stryd 測量距離來估算您的校準係數：42.2 km / Stryd 距離 \* 100


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