4,000m is a long swim. Plan on 80–100 minutes in the water. This workout is for swimmers who regularly train 3,000m+ and want a structured long session.
Who This Is For
This is not a beginner workout. To get the intended benefit, you should be able to:
- Comfortably swim 2,500m without significant fatigue
- Hold a consistent pace throughout a 1,500–2,000m effort
- Train at least 3–4 times per week
The Workout
Total: 4,000m
Warm-Up — 800m
- 400m easy freestyle
- 4×100m as 50m drill + 50m swim, :15 rest
- Choose one drill focus for the session (catch-up, bilateral breathing, rotation)
Aerobic Set 1 — 1,200m
- 6×200m on 3:30 (target: easy to moderate effort, :20–:30 rest)
- Focus: hold even splits. These should feel controlled, not hard.
Pull Set — 800m
- 8×100m pull buoy, :15 rest
- Moderate effort — slightly faster than the 200m set
- Focus: long strokes, high elbow catch
Aerobic Set 2 — 800m
- 4×200m, descend 1–4 (each one slightly faster than the last)
- Start at easy pace, finish the last 200m at threshold effort
Cool-Down — 400m
- 400m easy mixed strokes
Pacing Strategy
The biggest challenge in long workouts is pacing the first half. Most swimmers go slightly too hard on sets 1 and 2, then struggle in set 3.
Target: set 3 (the pull set) should feel similar in effort to set 1. If set 3 feels harder, you were too fast earlier.
The descend set at the end is intentionally placed when you’re fatigued. If you can still build pace in the final 800m, your aerobic fitness is solid.
Logging a Long Session
Record the following:
- Average pace per 100m for set 1 and set 2
- Average pace per 100m for the pull set
- Your pace on the final 200m of the descend set
Those four numbers tell you your aerobic fitness level and your ability to hold pace under fatigue. Track them over time in SwimBeat for a clear picture of endurance development.
Frequency
One 4,000m session per week is enough. Pair it with 2–3 shorter sessions (intervals, technique, recovery) during the rest of the week. Long sessions build aerobic base; shorter sessions build speed and technique.