Examples disclosed herein relate to the scheduling and transmission of timing measurements between mobile computing devices in an area to determine the devices' locations. A bulk fine timing measurement (BFTM) allocation message is generated by a scheduling mobile computing device that identifies other mobile computing devices in the area. The BFTM allocation message generated by the scheduling mobile computing device indicates a time of delivery (TOD), a scheduling order for the identified mobile computing devices, and a contention-free period for the mobile computing devices to transmit the timing measurement messages. The mobile computing devices generate BFTM timing message, which include times of arrival (TOAs) or propagation timing estimates, associated with message from other devices. The scheduling order indicates a sequence of transmissions (e.g., a forward and reverse sequence) in which the responding mobile computing devices are to transmit the BFTM timing messages, which are used in location-detection services.