Milestone map
Milestone map
3 milestones
750m open water swim confident
6 weeks
Develop the ability to swim 750 metres in open water with confidence — not just in a pool. The open water swim is the most anxiety-producing element of a sprint triathlon for most first-timers: the water is murky, there are no lane lines, other swimmers are close, and sighting requires deliberate technique that pool swimming never practices. A swimmer who can complete 750 metres in a pool but has never practised open water swimming will face a significantly different experience on race day. The milestone requires evidence of at least two open water swim sessions (lake, sea, reservoir, or designated open water swimming venue) of 500m+ each, plus a pool session confirming 750m completion without stopping. Cold water acclimatisation (most UK open water venues are 14–18°C even in summer) should be experienced before race day.
Proof required
Submit: (1) Strava activities or GPS logs from at least two open water swim sessions of 500m+ each (activity exports showing map, distance, and date), and (2) a pool swim activity confirming 750m+ completion without stopping.
What gets checked
- Two open water swim sessions are documented with GPS — the activities must show open water (not a rectangle, not a pool shape); map view on Strava or Garmin Connect makes this clear; the distance for each session must be 500m or more
- Pool 750m is completed without stopping — a pool activity showing 750m continuous is required; stopping at the wall for 30 seconds does not constitute stopping; stopping for 2+ minutes to rest does; the 750m should be swum in a single unbroken effort to simulate race conditions
- Open water experience is recent — within 8 weeks of the target race; an open water swim session from 6 months ago does not demonstrate current readiness for a race; recency matters because cold water conditioning is time-sensitive
Common mistakes
- Not practising in open water before race day — the open water swim section of a sprint triathlon causes more DNFs (did not finish) than any other section, not because of fitness but because of panic; the experience of murky water, being surrounded by other swimmers, and the absence of lane lines triggers anxiety in swimmers who have only trained in pools; get at least two open water sessions before race day regardless of pool ability
- Not practising sighting — sighting (lifting the head forward to spot the buoy while swimming) is a technique that pool swimming never requires; untrained triathletes typically swim 200–400m extra distance because they cannot maintain a straight course without lane lines; practise sighting every 10 strokes in both pool and open water sessions; it is a skill that takes time to make automatic
- Entering a triathlon without a wetsuit when conditions require one — most sprint triathlon events take place in waters below 20°C; a wetsuit is required below 14°C and strongly advisable between 14–20°C; triathletes who swim in cold water without a wetsuit lose body heat rapidly and their swimming technique degrades; confirm the race's wetsuit rules and water temperature before race day
Resources
Foundationstart here
Depthgo deeper
Masteryfor the dedicated
What a verifier looks for
- Check the swim activities for open water — open Strava or Garmin Connect activity links if possible; a pool swim shows a rectangle track; an open water swim shows a natural water body shape; confirm at least two activities are open water
- Verify the 750m pool session is without a stopping rest — a Strava or Garmin pool swim showing 750m as a single effort passes; a session showing 10 × 75m with rests between is pool fitness but not race-simulation swimming
- Ask about wetsuit use and water temperature — 'what was the water temperature at your open water sessions?' and 'will you use a wetsuit on race day?' helps confirm race preparation is realistic
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Brick workouts (bike → run) complete
3 weeks (weeks 7–9 of the 12-week training block)
Complete at least three brick workouts — sessions that combine cycling directly into running without rest between the two disciplines — to prepare the legs for the specific demands of the triathlon run after the bike leg. The 'brick legs' sensation (heavy, unresponsive legs when transitioning from cycling to running) is a defining feature of triathlon training that only brick workouts teach the body to manage. A runner who is also a cyclist but has never done a brick workout will typically experience significantly degraded running performance in the triathlon run leg simply because the legs are not adapted to the transition. Three brick workouts over 3 weeks, with the run portion increasing from 1km to 3km, is the minimum preparation. Sprint distances (20km bike + 3–5km run) should be approximated in at least one brick session before race day.
Proof required
Submit: Strava activity links or GPS exports for at least three brick sessions (each showing a bike segment followed immediately by a run segment on the same day, with dates). The final brick should be close to sprint race distances (15km+ bike, 2km+ run).
What gets checked
- Three distinct brick sessions are documented — each session must show both a cycling and a running activity on the same day; they do not need to be in the same Strava 'multi-sport' activity but both activities should share the same date; three sessions on three separate days across at least 2 weeks
- The final brick approaches sprint race distances — a final brick of 15km+ cycling followed immediately by 2km+ running simulates the race segment; a final brick of 5km cycling and 500m running is insufficient preparation for the race legs; the distances should progressively build toward race distances
- Sessions are post-bike run, not pre-bike run — a 'brick' is specifically cycling then running; a run followed by cycling is not a brick and does not produce the brick legs adaptation; confirm the activities are in the correct order
Common mistakes
- Not doing bricks and planning to 'manage the run' on race day — experienced triathletes who skip brick training in a training block consistently report that the run leg is worse than expected; brick training is not optional; it is the specific adaptation that makes the run leg possible; three sessions over 3 weeks is the minimum required
- Using a turbo trainer (indoor bike) and not doing outdoor cycling — turbo trainer sessions improve aerobic fitness but do not simulate the demands of cycling on a road or triathlon course (weather, terrain variation, bike handling, cornering); at least one brick session should include outdoor cycling on terrain similar to the race course before race day
- Not practising transitions — the T1 (swim to bike) and T2 (bike to run) transitions are timed in a triathlon and account for 1–3 minutes of total race time; untrained transitions involve fumbling with gear, shoes, helmets, and racking the bike; practise the transition at least once before race day, including the sequence of putting on the helmet before unracking the bike (penalty if violated at TRIUK/BTF events)
Resources
Foundationstart here
Depthgo deeper
Masteryfor the dedicated
What a verifier looks for
- Confirm each brick session shows both cycling and running on the same date — check that the bike and run activities share the same date in Strava or the GPS export; a brick session where the run was done the next day is not a brick
- Check the final brick distances against race distances — the final brick before the race should be at least 15km cycling and 2km running; a final brick of 5km is undertraining for the sprint race bike leg of 20km
- Ask about transition practice — 'have you practised T1 and T2?' is a useful question; a competitor who has not rehearsed the transition will cost themselves time and potentially a penalty on race day
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Sprint triathlon finished — official result
12 weeks total (the full outcome duration)
Complete a sprint triathlon (750m swim, 20km bike, 5km run) at an officially registered event and submit the official chip-timed result. Finishing a sprint triathlon is a meaningful physical achievement regardless of time: the race requires simultaneous competence in three sports and the mental resilience to continue when any of the three legs is harder than expected. The official result is the mandatory proof — a chip-timed result from the official event timing service shows finish time, split times (swim, T1, bike, T2, run), and the finisher's name and race number. 'I finished' without an official result does not pass; the chip time is the evidence of completion. A post-race reflection (100+ words) is required, covering what the race taught that training could not.
Proof required
Submit: (1) the official chip-timed result from the event (link to the official results page showing your name, race number, and finish time with splits), and (2) a 100+ word post-race reflection covering what the race experience taught you that training could not prepare for.
What gets checked
- Official chip-timed result is present — a link to the official results page (e.g. ChronoTrack, Race Roster, BTF results portal) or a screenshot showing the student's name, bib number, and finish time with swim/bike/run splits; a screenshot of a personal GPS watch showing total time without an official result does not pass
- Reflection is 100+ words and specific to the race experience — a reflection that could have been written without competing ('triathlon is hard and I felt tired') does not pass; the reflection should name specific moments, unexpected challenges, or observations about the race that training could not simulate; the swim start chaos, the brick legs at T2, the last kilometre of the run when energy is depleted — any specific moment that reveals something training did not prepare for
- Race is at a registered sprint triathlon event — the event must be organised by a recognised triathlon federation (BTF, Triathlon Ireland, Triathlon England) or a registered event organiser; a 'triathlon' organised by a local running club that is not officially sanctioned does not produce the results documentation required
Common mistakes
- DNF (Did Not Finish) and treating it as a finish — a DNF is not a finish; if the race was not completed (exited the water, withdrew from the bike leg, stopped running before the finish line), the milestone is not met; a DNF is not a failure as an experience but it does not satisfy the milestone requirement; register for a subsequent sprint triathlon after addressing what caused the DNF
- Using a GPS watch time as the official result — personal GPS watch totals differ from chip times due to the distance between the start timing mat and the swim start, and the precision of GPS tracking through the water; the official chip-timed result from the event timing service is the only accepted documentation
- Not writing the reflection until long after the race — post-race reflections written 3 weeks after the event are typically more generic than ones written within 48 hours while the specific sensations are fresh; write the reflection the day after the race while the swim start chaos, the brick legs, and the run finish are still specific in memory
Resources
Foundationstart here
Depthgo deeper
Masteryfor the dedicated
What a verifier looks for
- Verify the result on the official results page — the link or screenshot should show the student's name, bib number, finish time, and split times; a GPS watch screenshot without an official result does not pass
- Confirm the event is a registered sprint triathlon — search the event name; it should appear on BTF, Triathlon Ireland, or an equivalent national federation's registered event list; an unregistered 'fun triathlon' does not produce the results documentation required
- Read the reflection for race-specific observations — ask 'what was the hardest moment and what caused it?' if the reflection is too generic; a specific answer ('the swim start when 60 people went off at once and I got knocked' or 'the last 500m of the run when I had nothing left') demonstrates genuine completion
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