Swimming 3K — Open Water or Pool
Swimming regularly and want to progress to 3km open water or pool? This 10-week plan includes threshold work, progressive volume, and open water mental preparation.
Prerequisites
- ✓Able to swim 1500m non-stop (in 35-45 min)
- ✓Swimming 3-4x per week for at least 2 months
- ✓Basic crawl technique (bilateral breathing)
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Add sessions to your calendar or export to your Garmin / Coros watch.
Week-by-week program
1500m continuous — record your time — baseline reference
10 × 100m 20 s rest — total 1000m
1200m continuous + 4 × 100m 20 s rest — total 1600m
3 × 500m 60 s rest — total 1500m
6 × 200m 30 s rest — sustained pace — total 1200m
1600m continuous — moderate pace
8 × 150m 25 s rest — total 1200m
2 × 800m 90 s rest + 400m — total 2000m
16 × 50m in 45-50 s, 15 s rest — total 800m + 400m recovery
4 × 400m 45 s rest — target pace — total 1600m
1800m continuous — steady pace
5 × 400m 40 s rest — total 2000m
10 × 100m drills (catch-up, fingertip drag) 30 s rest — total 1000m
1500m continuous — comfortable pace
6 × 200m 35 s rest — total 1200m
2000m continuous — steady pace
5 × 400m 40 s rest — total 2000m
2000m continuous + 4 × 100m sprint — total 2400m
12 × 100m 15 s rest — total 1200m + 400m recovery
2500m continuous — moderate pace
6 × 300m 35 s rest — total 1800m
2200m continuous — steady pace
3 × 600m 60 s rest — total 1800m
3000m continuous — pre-goal test
10 × 100m drills + pull buoy, 30 s rest — total 1000m
1800m continuous
6 × 200m 35 s rest — total 1200m
2000m continuous
4 × 500m 50 s rest — target pace — total 2000m
2500m continuous — race pace
10 × 150m 20 s rest — total 1500m
3200m continuous — race simulation — sustained target pace
2000m continuous — race pace
4 × 300m 40 s rest + 400m recovery — total 1600m
8 × 100m incl. 4 × sprint — total 800m
2000m target pace — race venue (open water if possible)
1200m continuous — easy pace
6 × 100m incl. 2 × sprint — total 600m
3000m goal — pool or open water — your challenge!
Training tips
- 1.Open water: train to swim straight by sighting every 8-10 strokes
- 2.Wear a wetsuit if water temperature is below 18°C
- 3.Open water starts can be chaotic — practice mass start simulations in training
- 4.Work on flip turns in the pool to save time with no extra effort
- 5.Hydrate before the session — hard to do during swimming
Frequently Asked Questions
How do I prepare for open water swimming?
Gradually: start in calm, clear water at a comfortable temperature. Wear a wetsuit if temperature is below 20°C. Practice sighting (lifting your head to navigate) every 8-10 strokes. Swim with a partner or group your first time. Panic is common at the start — deep breathing helps.
What's the difference between pool and open water swimming?
Pool: lane lines, visual references, flip turns. Open water: sighting for navigation, possible current, colder water, no lane lines, sometimes mass starts. Good news: a wetsuit makes you float more and compensates for technical fatigue.
What time should I target for a 3k swim?
For intermediate level, expect 65-80 minutes in the pool (2:10-2:40 per 100m pace). In open water, add 5-10% depending on conditions. A realistic target for this plan: 1h10 in pool or 1h20 in open water.