My progression over the last few weeks:
19.9km
22.7km
21km
25.9km
29km
32.6km
36.3km
Everyone's different and has different aims but your weekly increases seem insane to me.
Also, there's not much point benchmarking yourself against a race time, when you're so badly rested, using HR as the metric.
Just trying to get my weekly distance up without injuring myself really.