IRONMAN 70.3 Oceanside Course: Full details on the swim, bike and run in California

A full course preview for IRONMAN 70.3 Oceanside, which celebrates its 22nd edition this weekend.
Jason West Leo Bergere Oceanside 2023 finish line Photo credit: Donald Miralle for IRONMAN
Get the ultimate guide to destination racing

This weekend, the IRONMAN Pro Series will kick off in California with IRONMAN 70.3 Oceanside, an event that has been a staple of the middle distance calendar since 2002.

Competing for prize money, pro series points and a slot to the IRONMAN 70.3 World Championship in December, the racing on April 6 promises to be fast and furious.

In our course preview below, we take you through the swim, bike and run in Oceanside and give you an insight into what you can expect to see the athletes tackle on Saturday.

Advertisement

The Swim

Taking place in Oceanside Harbour, the swim will be a one lap affair, with the athletes completing the 1.2 mile course which starts on the beach and follows a clockwise loop around to T1.

IRONMAN 70.3 Oceanside swim course for the 2024 edition.
[Credit – IRONMAN]

With current water temperatures estimated to be around 16 degrees Celsius, it will likely be mandatory for the athletes to wear a wetsuit, which suits weaker swimmers such as Lionel Sanders and Sam Long.

The Bike

In Oceanside, the bike course consists of one loop of 56 miles, with the ride taking athletes from the Harbourside up and through the US Army base at Camp Pendleton, before looping back down to transition.

The course consists of the San Mateo Hill and two other testing climbs, with a total of 800m of elevation throughout the duration of the race.

The bike course for the 2024 edition of IRONMAN 70.3 Oceanside.
[Credit – IRONMAN]

Out on the road, there will be three aid stations for athletes to refuel. Typically windy on the way back into Oceanside and the transition area, the bike course consists of plenty of challenges and athletes will need to take care to stay on top of their nutrition.

The Run

Finally, the rolling run course is a half-marathon or 13.1 mile two-lap finish to an epic day of racing, starting from the transition area on Oceanside Pier.

The run course at IRONMAN 70.3 Oceanside in 2024.
[Credit – IRONMAN]

Athletes will run down The Strand and through the local seaside neighbourhoods, where supporters will be lining the streets. With twists, turns and some short but sharp climbs, the run course certainly is one that saps the legs.

Jason West Leo Bergere Oceanside 2023 finish line Photo credit: Donald Miralle for IRONMAN
[Photo credit: Donald Miralle for IRONMAN]

Finishing just South of the pier, the 2024 IRONMAN 70.3 Oceanside champions will be crowned after what will undoubtedly be spectacular battles in both the women and men’s races on Saturday.

Written by
Tomos Land
Tomos Land is a triathlon & running journalist whose expertise lies in the professional world of short course & long distance triathlon, though he also boasts an extensive knowledge of ultra-running.

How Can Heart Rate Zones Improve Triathlon Cycling Speed And Fitness?

How Does Calcium Affect Running Performance and Recovery?

Triathlon World Tour takes shape as first T50 and T100 calendars for 2027 are revealed

Alex Yee hopes home WTCS London debut can inspire Britain’s next generation

Sophie Evans still believes Paris selection was wrong – but Olympic ‘door is not shut’

‘I don’t have the legs Alex has… but I can run my mouth’: Why Max Stapley is embracing his own path

What is Cyclist’s Knee and How Can You Prevent It?

What is Barefoot Running and How Do I Start Safely?

Triathlon World Tour takes shape as first T50 and T100 calendars for 2027 are revealed

Alex Yee hopes home WTCS London debut can inspire Britain’s next generation

Sophie Evans still believes Paris selection was wrong – but Olympic ‘door is not shut’

‘I don’t have the legs Alex has… but I can run my mouth’: Why Max Stapley is embracing his own path

Strictly duo Chris Robshaw and Julian Caillon tackle London T100 Triathlon

Jess Fullagar on why free-to-air coverage of WTCS London matters – and hopes for more

IRONMAN 70.3 Boise 2026: Date, start time and how to watch live

Jack Willis believes patience is paying off as Olympic dream edges closer

Share to...