Nafi' narrates from Ibn Umar (may Allah be pleased with them both) that the Prophet (peace and blessings be upon him) held a race between conditioned horses, from al-Hafya' to Thaniyyat al-Wada', and for the horses that were not conditioned the distance of the race was from Thaniyyat al-Wada' to the mosque of Banu Zurayq; and Sayyiduna Abdullah bin Umar (may Allah be pleased with them both) had taken part in that race.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب السبق والرمي / 19763