Yang Yang and Xinxin are running on a circular track with a circumference of 600 meters.

When we first met, Yang Yang ran more than Lily 100 meters.

So Lili's running distance =(600- 100)÷2=250m.

Yang Yang ran 250+100 = 350m.

The second time, Yang Yang caught up with Lili, which means that Yang Yang ran a lap more than Lili, which is 600 meters.

Because Yang Yang runs more than Lili every 350m100m.

Then the distance of Yang Yang's second run = 600/100x350 = 2100m.

So the total * * * running distance = 2 100+350 = 2450m.