定向越野運動在台灣逐漸受到大眾的認識與喜愛，國內繼辦理第8屆世界運動會及第21屆聽障奧運會後，也將陸續舉辦多場全國及國際等級的賽事，賽事主辦人員對比賽「勝出時間」的估算準確性，關係到整場賽事的品質、是否符合規則規範、觀眾的期待、以及選手在訓練上的需求等。過去對勝出時間估算大多憑藉賽事人員的主觀經驗，對主、客觀的影響因素缺乏深入探討，因此本文主要針對定向越野競賽估算勝出時間精確性的影響因素進行討論，並提出提高勝出時間估算精確度的解決策略。

Orienteering sport has become more popular and welcome in Taiwan. After hosted 8th World Games and 21^st Deaflympics in Taiwan, more domestic and international events will be organized in the near future. There was always an issue for organizers to estimate the orienteering competition’s winning time precisely. Precision of orienteering winning affects event quality, regulation, spectators’ expectation, and runners’ training. Previous organizers estimated winning time mainly according to their subjective judgment. There is lacking a further discussion of the factors which affected the estimation. This article aimed to draw out the possible influential factors followed by better solution of orienteering winning time estimation.