Language:
كتاب المغازى
64  
Military Expeditions led by the Prophet (pbuh) (Al-Maghaazi)
(77)
Chapter: Hajjat-ul-Wada
(77)
باب حَجَّةُ الْوَدَاعِ
Sahih al-Bukhari 4413

Narrated Hisham's father:

In my presence, Usama was asked about the speed of the Prophet (ﷺ) during his Hajj. He replied, "It was Al-`Anaq (i.e. moderate easy speed) and if he encountered an open space, he used to increase his speed."

حَدَّثَنَا مُسَدَّدٌ، حَدَّثَنَا يَحْيَى، عَنْ هِشَامٍ، قَالَ حَدَّثَنِي أَبِي قَالَ، سُئِلَ أُسَامَةُ وَأَنَا شَاهِدٌ، عَنْ سَيْرِ النَّبِيِّ، صلى الله عليه وسلم فِي حَجَّتِهِ‏.‏ فَقَالَ الْعَنَقَ، فَإِذَا وَجَدَ فَجْوَةً نَصَّ‏.‏
Reference : Sahih al-Bukhari 4413
In-book reference : Book 64, Hadith 435
USC-MSA web (English) reference : Vol. 5, Book 59, Hadith 697
  (deprecated numbering scheme)