Marathon Pace app analytics for December 21

*overview* ・When setting a marathon target time, we have listed the times for each location. ・In addition, a calculation function is also provided. *function* ① From the pace per km, you can check the times of 5km, 10km, 15km, 20km, Half, 25km, 30km, 35km, 40km, Full in a list. ② For distances that are not listed, it is also possible to "calculate the time at a certain point from the lap time". ③It is also possible to "calculate lap time from the time at a certain point".