Running 20:00 [4] 5.83 km (3:26 / km)
mona fartlek divided by 3 with 2min easy jogging on grass
1) 6:00 (2x90''/90'')- 1,79km
2) 8:00 (4x60''/60'')- 2,25km
3) 6:00 (4x30''/30''+4x15''/15'')- 1,79km
got some quick running in with not getting too tired.