IRONMAN 70.3 Subic Bay Philippines
Subic Bay (Subic Bay Freeport Zone, Olongapo), Philippines · June · IRONMAN 70.3
Why people love it
- Clear bay swim with a mountain backdrop and buoys every 50 m (164 ft)
- Aid about every 1 km (0.6 mi) on the run, with iced water
- Qualifier for the 70.3 World Championship (45 slots in 2026)
- Expressway bike roads
Watch out for
- Heat above 32 °C (90 °F) and high humidity; one athlete advises arriving a week early
- June is rainy season: storm hit the 2023 swim
- About four hours by road from Manila, 162 km (101 mi)
- Big climbs on each bike lap and two 2 km (1.2 mi) run climbs
- No elevation or water temperature figures are published
Race
How racers feel about it, how well it is run, and how it treats a first timer. Counts for 27% of the overall score.
- Racer satisfactionLiked3.4
Only a handful of athlete accounts: well run and scenic, but hard in 32 °C (90 °F)+ (90 °F+) heat and storms. · Low confidence
- OrganizationWell run3.8
Athletes call it well run with a small, easy expo, though the 2023 storm pushed swim buoys off line. · Low confidence
- First timer friendlyDoable2.7
Heat above 32 °C (90 °F), humidity, run climbs and a transfer of four hours or more from Manila suit experienced travellers. · Low confidence
Course traits, not part of the score
- PR potentialAverage2.7
Winners took 3:51:59 in 2015 and 4:04:33 in 2019; heat and climbs cost one age grouper about an hour in 2023. · Low confidence
- Course easeVery tough2.2
Heat, humidity, a technical rolling bike and two 2 km (1.2 mi) run climbs. · Medium confidence
Swim
Wetsuit odds, water temperature, calm, and the experience of the start. Counts for 15% of the overall score.
- Wetsuit legalRarely1.2
Tropical bay; the 2023 swim was non-wetsuit and no source mentions wetsuits being allowed. · Medium confidence
- Water temperatureUncomfortable1.8
Water is likely above 27 °C (81 °F), but no measured temperature was published. · Low confidence
- Calm waterSome chop3.3
A sheltered bay and clear water in 2015, but the 2023 storm brought rain, wind and drifting buoys. · Low confidence
- Swim easeEasy3.5
Two simple laps with colour-coded buoys every 50 m (164 ft) since 2024; the 2023 storm made navigation hard. · Low confidence
- Swim experienceGreat4.0
A 2015 racer called the clear water with a mountain backdrop stunning. · Low confidence
Bike
Road surface, closures, scenery and wind. Counts for 19% of the overall score.
- Road surfaceGood3.5
Expressway sections suggest decent tarmac, but no athlete comments on surface quality. · Low confidence
- Road closuresPartly closed3.3
Expressway sections and the Freeport setting suggest closures, but no source confirms them. · Low confidence
- Bike sceneryBeautiful3.5
A 2015 racer noted mountain views from the expressway; there is little other coverage. · Low confidence
- WindSome wind2.8
Gusty wind on the 2024 bike; the 2025 run changes added exposed, wind-swept sections. · Low confidence
Course traits, not part of the score
- Bike speedAverage2.7
Expressway roads, but a big climb at each lap's start and end and gusty wind; pro bike splits slowed from 2:04 to 2:13. · Low confidence
- Bike flatnessRolling2.8
Elevation gain is unpublished; a large climb per lap on 90 km (56 mi) suggests roughly 600 to 900 m (1,970 to 2,950 ft). · Low confidence
- Bike simplicitySome technical parts3.0
The 2025 route is described as more technical with sharper turns; otherwise expressway out-and-back roads. · Low confidence
Run
Crowds, aid stations, conditions underfoot and scenery. Counts for 13% of the overall score.
- Crowd supportDecent2.7
No athlete describes crowds, and the run detours into side streets. · Low confidence
- Aid stationsGood4.0
Helpful volunteers and aid every 1 km (0.6 mi) with iced water, gels and electrolytes. · Medium confidence
- Run sceneryPleasant3.0
Freeport roads and side streets; no scenic praise found. · Low confidence
- Run conditionsHard1.8
Little shade and heat in the 90s °F (32 °C (90 °F)+) with high humidity slowed runners in 2015, 2017 and 2023. · Medium confidence
Course traits, not part of the score
- Run flatnessRolling3.1
Mostly flat, but two climbs of about 2 km (1.2 mi) near 8 km (5 mi) and 16 km (10 mi); route changed in 2025. · Medium confidence
Conditions
Air temperature, how predictable the weather is, setting, and spectating. Counts for 15% of the overall score.
- Air temperatureExtreme1.3
Temperatures above 32 °C (90 °F) with high humidity were reported in 2015, and later years were humid and stormy. · Medium confidence
- Weather reliabilityUnsettled2.2
June is rainy season: a storm hit the 2023 swim and thundershowers were forecast for 2024. · Medium confidence
- Venue beautyLovely4.0
Mountains and a clear bay; one 2015 racer called it among the most beautiful venues she had raced. · Low confidence
- Spectator friendlySome viewpoints2.9
Few spectating details; the looped run with turnarounds should allow several viewing points. · Low confidence
Course traits, not part of the score
- Low altitudeSea level5.0
Coastal bay at sea level. · High confidence
Stay and travel
Hotels, walkability, getting there, and the town around the race. Counts for 11% of the overall score.
- Hotel availabilityGood3.8
Subic and Olongapo hotels were described as sufficient, with no sell-out reports. · Low confidence
- Hotel valueGood3.7
No price evidence found; Philippines pricing is likely moderate. · Low confidence
- WalkabilitySome driving3.0
The venue is in the Freeport Zone, and reports do not say how far the start and transitions are on foot. · Low confidence
- Travel easeAwkward2.1
Subic is 162 km (101 mi) from Manila, a transfer of at least four hours. · Medium confidence
- LogisticsSome complexity3.3
Small expo and easy check-in, but nothing on transition layout. · Low confidence
- Town and foodFine2.9
Supermarkets and malls are available, but one athlete says Subic and Olongapo run short of things to do over a week. · Low confidence
Key facts
- Location
- Subic Bay (Subic Bay Freeport Zone, Olongapo), Zambales, Philippines
- Typical month
- June
- Latest or next date
- 7 June 2026
- Organiser
- IRONMAN 70.3
- First held
- 2015
- Distances
- 1.9 km (1.2 mi) swim, 90 km (56 mi) bike, 21.1 km (13.1 mi) run
- Swim venue
- Subic Bay (Dunagree Beach / Boardwalk area) (ocean)
- Wetsuit
- Banned
- Swim laps
- 2
- Bike laps
- 2
- Key climbs
- Large climb at the start and end of each lap (2023 report); Steep early climb off the old airport runway (2015 report)
- Run laps
- 2
- Run shade
- Little to none; exposed
- Humidity
- high; tropical
- Nearest airport
- Manila Ninoy Aquino (MNL), 162 km (101 mi) away
- Where to stay
- Subic Bay Freeport Zone, Olongapo
- Booking
- Subic Bay is about 162 km (101 mi) from Manila; the transfer takes at least 4 hours. Clark airport handles only light aircraft according to a 2023 report. Stay in Subic or Olongapo.
What racers and reviewers say
- Trizone (David Deakin)Raced 2023 · blog · Mixed
Australian age grouper describes a tropical storm at the swim start, a non-wetsuit swim with drifting buoys and a hot, humid run. A 2-lap, mostly freeway bike with a big climb at each lap end, a run with two 2 km (1.2 mi) climbs and aid every 1 km (0.6 mi). Calls the race well organised and worth doing but advises arriving a week early to acclimatise.
“racing in Asia can either be awesome or a complete disaster”
- Team PHenomenal Hope (Amanda Budzowski)Raced 2015 · blog · Mixed
First-timer's report: stunning swim at Dunagree Beach with mountains behind, a bike on the Subic-Tarlac Expressway after a start down the old runway, and an exposed, flat run in temperatures in the 90s F (32 C+). Heat was the hardest part and smoke from a roadside field fire affected her breathing near mile 17 (27 km (16.8 mi)).
“I underestimated what a difference the heat would make.”
- SwimBikeRun.phRaced 2015 · article · Positive
Review of the inaugural 2015 edition: praises the staging and execution as a large-scale event that stood apart from other Subic races, while calling the day blazing hot. Less festive than the Cobra Ironman 70.3 Philippines in Cebu.
“HOT”
- SlowtwitchRaced 2015 · article · Mixed
Pro race report for the first Subic Bay 70.3. Reed won in 3:51:59 and Edwards in 4:18:13 (women's overall 6th); race-best bike was 2:04:12. Slow-ish winning times by half-distance standards but no commentary on conditions.
- Trizone (Shawn Smith)Raced 2017 · article · Mixed
2017 pro recap: Ruedi Wild won in 3:48:24 and Radka Kahlefeldt overtook Caroline Steffen on the run. Humidity took a toll on the field, with leaders fading late; a drafting penalty was handed out on the bike.
Show 5 more
- SPIN.phRaced 2025 · article · Mixed
Preview of the 2025 course change: the race director said the bike was modified to be more technical with sharper turns, rolling terrain and extended flat sections, and the run moved to a new, more exposed route that may be wind-swept.
“slightly modified the bike course and introduced a new run route”
- Daily TribuneRaced 2025 · article · Mixed
Confirms the 2025 route changes by Sunrise Events: same 1.9 km (1.2 mi), 90 km (56 mi) and 21 km (13.1 mi) distances, with a technical rolling bike and exposed new run adding strain to the final leg. No elevation figures given.
- PhilstarRaced 2024 · article · Positive
2024 preview on the 11th edition of the 70.3: athletes from 54 countries, forecast cloudy with morning and afternoon thundershowers, called a world-class championship course. Few course specifics.
- Philstar (2026 slots)Raced 2026 · article · Positive
Previews the 10th staging on 7 June 2026: 45 slots to the 70.3 World Championship in Nice and entrants from at least 45 countries. Confirms the race remains an international qualifier.
- RaceCheckRaced 2017 · aggregator · Mixed
Single 2017 rating of 3.1/5: logistics, safety, navigation and aid stations all scored 4/5, staff 3/5. No written review.
Sources
Pages we used for facts and ratings. See how we rate.
Training for IRONMAN 70.3 Subic Bay Philippines? Moku Coach builds your plan around race day.