Abstract: A system for monitoring the time and location of a participant in a competitive activity, which includes memory apparatus for storing event performance parameters and the identity of the participant; clock apparatus, for determining event times of the participant; control apparatus, associated with the clock apparatus and the memory apparatus, for receiving as input data the event times of the participant, and for determining event performance parameters in accordance therewith, and for storing the parameters in the memory apparatus; and event duration measuring apparatus associated with the control apparatus; the event duration apparatus including first tactile apparatus associated with the clock apparatus, for automatically starting the clock apparatus in response to a first predetermined tactile input, and second tactile apparatus for providing an output signal to the clock apparatus in response to each of one or more second predetermined tactile inputs, wherein the clock apparatus is operative to provide