4 Intervals

A1. AMRAP 8
800m Run
1600m BikeErg
Row for calories in the remaining time

A2. AMRAP 8
800m Run
60/45 (cal) Row
BikeErg for calories in the remaining time

– Rest 2:30 between intervals –

Flow. A1-A2-A1-A2

Overview. Mixed aerobic intervals pairing sustained running with bike and row efforts. Each 8-minute piece builds cumulative fatigue in the legs and lungs, challenging you to stay efficient under a steadily rising heart rate. The aim is to keep split times tight across intervals, smooth transitions, controlled breathing, and repeatable power output.
Effort. Work around 8.5/10 intensity. Push the run at a strong but manageable pace, then settle into consistent strokes or cadence on the machines. You should finish each interval breathing hard but able to match or slightly improve the next effort.
Feel. Expect heavy legs and controlled discomfort through the second half of each piece. Recovery between intervals will feel short, so use the early minutes of each round to reestablish rhythm before pushing.
Adaptation. Develop aerobic endurance, pacing control, and fatigue resistance in mixed cyclical work. Train the ability to maintain steady mechanics and power.
Debrief. Take 2–3 minutes after the workout to reflect
– Were you able to maintain consistent effort across the intervals.
– Did your pacing on the runs set you up well for the machines?
– How long did it take to regain rhythm after transitions?
– What small adjustment would help you sustain power more evenly next time?

Movement options. You can sub any of the machines where needed