25Sport — Sports Calculators
Swimming Workouts

Open Water Swimming — Long Distance Preparation Plans

Eight 12-week plans designed to prepare you for open water swims. These plans improve aerobic capacity through light, medium, and intense aerobic work, combined with anaerobic threshold training and speed — all tuned for the specific demands of swimming in lakes, rivers, and the sea.


Performance Groups

Based on a 10×50m test with 5″ rest at maximum sustainable pace:

  • Group A (Ga): Total time > 9'30"
  • Group B (Gb): 8'50"–9'30"
  • Group C (Gc): 8'00"–8'49"
  • Group D (Gd): < 8'00"
Intensity zones:
  • 60–70%: Light aerobic
  • 70–80%: Aerobic threshold / medium aerobic
  • 80–85%: Intense aerobic
  • 85–90%: Anaerobic (power/capacity)
  • 90–100%: Speed

Choose Your Plan

3 sessions/week

Plan 21 — 2000–3000m per session

Prerequisite: Can swim 2000m · Level: Medium-High

Month 1: Aerobic base — sessions from 2100m to 3700m. Technique drills (catch-up, side kick, closed fists, head-up breathing). Interval test to establish performance group. Includes one 2000–3000m continuous session.

Month 2: Maximum threshold/medium aerobic volume. Sessions 2550–3200m. Progressive intervals with less rest. Includes 3000m continuous swim.

Month 3: Specific preparation and tapering. Higher intensity with lower volume. Includes 3×1000m timed sets. Final session: 2100m light tapering.

Plan 22 — 3000–4000m per session

Prerequisite: Can swim 3000m · Level: Medium-High

Month 1: Base building, 3100–3700m/session. Mixed strokes and technique drills.

Month 2: Maximum threshold volume, sessions 3300–4100m. Includes 3000m time trial.

Month 3: Specific preparation and tapering. Final week: 2100–3400m progressively lighter.

Uses "send-off" method — fixed departure intervals per performance group.

Plan 23 — 4000–5000m per session

Prerequisite: Can swim 4000m · Level: Medium-High

Month 1: Foundation phase. Sessions 4100–4600m. Technique priority, group classification test, threshold + aerobic intervals.

Month 2: Maximum threshold volume phase. Sessions 4400–5000m. Includes 3000m time trial mid-month.

Month 3: Competition preparation and tapering. Weeks 10–11: highest volume (4700–5200m) with continuous efforts of 2000–4000m. Week 12: final taper — 3800m, 3100m, 2100m.

Core/abs minimum 3 days/week. Land warm-up + stretching always included.

4 sessions/week

Plan 24 — 2000–3000m per session

Prerequisite: Can swim 2000m · Level: Intermediate–Advanced

Month 1 (8 sessions): Light aerobic + technique. Volume 2100–2600m. Drills: catch-up, side kick, closed fists. Initial group classification test.

Month 2 (8 sessions): Maximum medium/threshold volume. Continuous sets of 2000–3000m. Kick work emphasis.

Month 3 (8 sessions): Sharpening + tapering. Timed efforts (2000m, 3000m, 3×800m). Final week: dramatic taper.

Plan 25 — 3000–4000m per session

Prerequisite: Can swim 3000m · Level: Intermediate–Advanced

Month 1: Base building. Volume 3100–4200m/session. Group test included.

Month 2: Maximum threshold volume with reduced rest. 3000m time trial mid-month.

Month 3: Race specificity + tapering. Continuous efforts 2000–4000m. Final week progressively lighter.

5 sessions/week

Plan 26 — 2000–3000m per session

Prerequisite: Can swim 2000m · Level: Medium-High

Month 1: Base + technique, groups by test. Sessions from 3100m.

Month 2: Maximum threshold/medium aerobic. 5 consecutive weeks with progressive distances.

Month 3: Race specificity + tapering. Continuous 2000m+ efforts. Easing toward competition.

Monthly volumes: Month 1 ≈ 38000m | Month 2 ≈ 44000m | Month 3: reducing.

Plan 27 — 3000–4000m per session

Prerequisite: Can swim 3000m · Level: Medium-High

Month 1: Light aerobic + technique. Sessions ~3100–4000m. Group classification.

Month 2: Maximum threshold/medium aerobic. Progressive distances with less rest.

Month 3: Sharpening + tapering. Race-specific efforts. Final session: 2100m.

Plan 28 — 4000–5000m per session

Prerequisite: Can swim 5000m · Level: Medium-High

Month 1: Base building + technique. Warm-ups 800–1200m. Groups by initial test.

Month 2: Maximum threshold/medium aerobic with progressive distances and reduced rest.

Month 3: Race specificity + tapering. Final week: pre-competition recovery.

Goal: maintain speed while increasing distance and reducing rest. Equipment work with paddles, fins, pull buoy, kickboard.

Glossary

Open water swim (travesía)
A race or swim in a lake, river, or sea — no walls to push off, no lanes, often with waves and currents. Very different from pool swimming.
Head-up breathing / Sighting
Lifting your head forward to breathe or see where you're going — essential in open water to navigate without lane markers.
Send-off (salida cada)
Everyone starts each repeat at a fixed clock interval (e.g., every 1:30). Faster swimmers earn more rest; slower swimmers get less — it rewards speed and keeps the pace honest.
Threshold work
Swimming at the highest pace you can sustain for an extended period (~80–85% effort) — the key training zone for distance swimmers.
Base building
The first training phase — long, easy swims to build your endurance foundation before adding harder work.
Sharpening (definición)
Just before tapering — race-specific efforts at high intensity with reduced volume. Like putting the final edge on a blade.
Tapering
Gradually reducing training volume in the final days/weeks before competition so your body arrives fresh and fast.
Breath-hold drill (apnea)
Swimming a short distance without breathing — builds lung capacity and comfort in the water.
Race specificity
Training that closely mimics your actual event — if your race is 3000m continuous, you practice long continuous swims at race pace.