1979 wrote: Thanks! How about recovery: 1 minute?
At my age, you have to be patient and set small goals. I've been improving 3 secs a year up until now. So from 2:07 to 2:00 is a 2 year project, at least.
No. At or just over 2:00 shape, you won't be able to make the entire session with honest 1 minute recoveries if you're clocking accurate times above. The loss of quality caused by a collapse from 45 to 48/49 during the 300s is not worth the maintenance of shorter recoveries. This is not LSD, it's high quality intervals. Therefore, you need to key the entire session to race pace, no slower.
A good barometer is obtained by controlling the rest period. So, try the session with ~2 mins recoveries first and ensure it all gets done at the correct speed. Then as your form improves, ratchet down on the recoveries first to 90sec, then towards 1min. From experience I can assure you that last recovery reduction will be seriously tough. If you can actually complete that entire session as described, and you're at ~54 for 400, you're ready for a sub-2.
However at 2:07 form, this session will not be achievable. So then try 29s for the 2s, 46/7 for the 300s, and 28s to close. If you can do that then move the speed dial as above. You also need to develop a tolerance for this kind of session.
In priority order, the objectives are a) to train at race pace and b) to extend the duration of race pace into the session and c) to reduce the recovery when a) and b) are assured. So when objectives a) b) and c) are all achieved, then race.
In principle it's no different for female athletes at this same level, although the sub-54 400 might be an ask for an 800 chic. But 55 point, at least...