Open Water Sprint Acceleration: Buoy Turn Practice Session

Session Overview

Buoy turns lose more time than any other element of the open water swim — yet they are rarely practised. This session combines sprint acceleration entries, tight turning technique, and race-effort repeats between two buoy markers to build the speed and confidence that shaves seconds off your swim split. Ideal for intermediate swimmers in their race preparation phase.

What You’ll Need

• Open water venue with 2 visible buoys (or marker points at least 150m apart)
• Wetsuit (recommended — practice how you will race)
• Swim buddy or safety kayak recommended when training in open water
• Tow float for visibility

Warm-Up (10 Minutes)

400m easy continuous swim, sighting every 6–8 strokes to orientate with the venue. Focus on long strokes and relaxed breathing before the speed work. Identify your two buoy markers and plan your route — note any current or wind direction that will affect the return leg.

Main Set

The session has three distinct phases, each building intensity. Rest between reps by swimming easy back to the start point.

• Phase 1 — Turn Drills (6 reps): Sprint the final 15m into each buoy, execute a tight wide-arc turn (not a backstroke flip), and sprint away for 15m. Then swim easy back to start. Focus entirely on the turn mechanics — wide approach, arm sweeping inside the turn, head up to reorient.
• Phase 2 — Surge-and-Turn Efforts (4 × 200m): Swim 150m at steady CSS pace, then sprint the final 50m into and around the buoy, exiting at race effort. Easy 100m swim back between reps.
• Phase 3 — Full Race Effort (3 × buoy lap): Complete three full circuits of your buoy course at race effort. Aim for even pacing and clean turns on every lap. Note your time on each lap.

Cool-Down (5 Minutes)

200m easy swim with focus on bilateral breathing and long body rotation. Use this as a final technical check — notice how your stroke feels compared to the start of the session.

Coaching Notes

• Approach buoys from a wide angle — cutting inside too tightly is where most athletes lose momentum. The wide arc allows you to maintain stroke rhythm through the turn.
• Sight immediately after the turn to reorient. In a race, the disorientation post-turn causes zigzag lines that add distance to your swim.
• To make it easier: reduce Phase 3 to 2 laps and extend rest. To make it harder: add a 4th Phase 3 lap and try to negative-split the three-lap set.
• Wear your race wetsuit for at least Phase 3. Buoyancy changes your body position and affects how tight you can turn.