This work presents an experimental evaluation of end-to-end delay in Sigfox networks, considering measurements from the transmitter to the server. We carried out two types of cases. The first was a static experiment with a typical delivery time ranging between 2.5 and 4.5 seconds, with a 100% delivery rate. The second considers mobility, with the experiments carried out in mostly rural environments in which the transmitter is inside a car. In this case, we observed a delivery rate of 20% and an end-to-end delay of up to eight seconds. Our evaluation empirically indicates performance limitations that application developers should consider.