Sayyiduna Ibn Umar (may Allah be pleased with him) says that it is not obligatory upon women, in the tawaf of the House and the sa'i between Safa and Marwah, to hasten; that is, to walk briskly (ramal) in the tawaf of the House and to run in the bottom of the valley (Batn al-Masil).
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الحج / 9055