equivalent instant speed when riding down is calculated in block 13 in the above example the various equations are calculated in distinct blocks in practice these operations can be carried out by a suitably programmed microprocessor one or several calculated values can be displayed at any time preferably the equivalent instant speed v ie which is for the cyclist an essential parameter for the management of his effort is permanently displayed in an embodiment of the present invention the meter further displays an indication on whether the cyclist is beyond or below his normal mean speed on flat this display may be made by red and green leds by signs and and so as indicated above an object of the present invention is to provide both an equivalent instant speed indication and an equivalent distance indication this equivalent distance can be calculated in a way not shown in fig1 by integrating or by adding the values of the equivalent instant speed it is also possible as indicated in block 14 to calculate the instant equivalent distance with the equation the equivalent average speed of the trip v me can be determined by equation v me d e t as indicated in block 15 thus at any time of his trip the cyclist can know the equivalent distance covered i e the distance he would have covered if there was no slope also to prepare a trip the calculating means included in the meter according to the invention.