City training guides
Best swimming pools in London for fitness training
A practical guide to London pools for lane swimming, 50m training, outdoor sessions and repeatable hybrid training.
London has Olympic pools, neighbourhood leisure centres, heated lidos and unheated outdoor pools stretching beyond 90 metres. The right choice depends on the session: uninterrupted lanes, a true 50m layout, cold-water exposure or a pool close enough to use consistently.
Pool configurations and lane allocations change. Check the live timetable before travelling.
London swimming pools at a glance
| Pool | Length and setting | Best suited to |
|---|---|---|
| London Aquatics Centre, Stratford | 50m indoor competition pool | Long-course and event-specific sessions |
| Hillingdon Sports & Leisure Complex | 50m indoor pool plus seasonal 50m lido | Regular 50m training in west London |
| London Fields Lido | 50m heated outdoor pool | Year-round outdoor lane swimming |
| Charlton Lido | 50m heated outdoor pool | Structured outdoor fitness swimming |
| Parliament Hill Lido | 60m unheated outdoor pool | Cold-water and longer-pool training |
| Tooting Bec Lido | 91.4m unheated outdoor pool | Long continuous outdoor efforts |
| Pancras Square Leisure | 25m indoor, five lanes | Convenient commuter sessions |
| Oasis Sports Centre | 25m indoor and 27.5m heated outdoor pools | Central access and shorter sessions |
Best for 50m training: London Aquatics Centre
The London Aquatics Centre has a ten-lane competition pool that can operate in 25m or 50m format. It is the clearest option for swimmers who want Olympic-standard surroundings and long-course pacing.
The configuration matters. Check the live timetable and confirm that the competition pool is set to 50m for the intended session. Public swimming is bookable through Everyone Active, and Stratford’s transport links make it accessible from several parts of London.
Best west London 50m option: Hillingdon
Hillingdon Sports & Leisure Complex has an eight-lane 50m indoor competition pool and a separate seasonal 50m lido. Swim for Fitness sessions divide lanes by pace.
Online booking is available and walk-ins depend on capacity. The site also contains a gym and athletics track, which makes it useful when swimming and another training mode need to happen in one location.
Best heated lido for regular lane swimming: London Fields
London Fields Lido combines a 50m outdoor pool with heating to approximately 24°C. It operates year-round and offers slow, medium and fast fitness lanes.
Book ahead for popular periods and build the session around the allocated slot. Published accessibility features include ramped pool entry, a PoolPod, hoist and accessible changing.
Best heated 50m lido in south-east London: Charlton
Charlton Lido has a heated 50m outdoor pool. Fitness swimming normally uses four lanes, although lessons and club activity can reduce that number.
Sessions must be booked. Check the available lane allocation before planning a demanding interval set.
Best for year-round unheated swimming: Parliament Hill
Parliament Hill Lido is a 60m open-air, unheated and chlorinated pool that opens throughout the year.
Its non-standard length requires some adjustment when translating a conventional workout. Summer access combines bookable and drop-in periods, while winter arrangements differ. Check the current water temperature and admission system before setting off.
Best for very long outdoor lengths: Tooting Bec
Tooting Bec Lido measures 91.4m and is unheated. The unusual length supports sustained swimming with fewer turns, but a standard 25m or 50m workout needs to be adapted.
Public opening is seasonal and advance booking is recommended. Check lane-swim periods, water temperature and weather restrictions.
Best for transport connections: Pancras Square
Pancras Square Leisure has a five-lane, 25m indoor pool beside King’s Cross and St Pancras.
Its location is the advantage. A repeatable pre-work or lunchtime session can deliver more value than occasional travel to a prestigious 50m venue. Choose Swim for Fitness in the live timetable rather than assuming every public session has lanes.
Best central outdoor option: Oasis
Oasis Sports Centre in Covent Garden has a 25m indoor pool and a 27.5m heated outdoor pool.
The outdoor pool is short for long-course work, but the location makes it useful when travel time would otherwise remove swimming from the week. Confirm whether the selected fitness session uses the indoor or outdoor pool.
How to choose the right pool
Prioritise repeatability
A pool on your commute that you can use twice each week beats a distant venue that only works occasionally. Travel to a 50m pool when the workout benefits from long-course conditions.
Check the session, not the venue name
Before booking, confirm:
- the pool’s configuration for that session;
- whether fitness lanes are available;
- how many lanes remain open to the public;
- pace-band arrangements;
- booking and last-entry rules;
- session duration;
- accessibility equipment you require.
Match the venue to the stimulus
A 25m pool suits technique, short intervals and frequent turn practice. Choose 50m when longer uninterrupted efforts or long-course pacing matter. Heated lidos support regular outdoor volume. Unheated water adds a temperature-management demand and should not be treated as an ordinary recovery session.
Fitting swimming into a hybrid week
Swimming can be a primary endurance session, technique work or lower-impact conditioning around running and strength. It still creates fatigue through the shoulders, back and trunk.
A balanced example:
| Day | Session | Intended load |
|---|---|---|
| Monday | Full-body strength | Moderate to hard |
| Tuesday | Technique and easy aerobic swim | RPE 3–4 |
| Wednesday | Running intervals | Hard |
| Thursday | Rest or easy movement | Easy |
| Friday | Swim intervals or threshold set | RPE 6–8 |
| Saturday | Long run, ride or sport | Moderate |
| Sunday | Rest | Recovery |
Give each swim one clear job. Protect the priority session from heavy upper-body fatigue, and adjust the workload when cold water or a long non-standard pool changes the demand.
Plan swimming alongside your other sports
Telos builds personalised multi-sport plans using your chosen sports, available hours, intensity preference and event or challenge. Swim and open-water swim can sit beside running, cycling, strength and the other supported sports.
Sessions include warm-up, main set, cool-down and RPE guidance. Every new 14-day block uses recent training, adherence, recovery and performance signals. Connected wearable and activity data can contribute sleep, readiness, resting heart rate and completed training, while fuelling guidance aligns with the work ahead.
Return to the London training guide, choose a London running route, or find a London sports community.