IRONMAN 70.3 Weymouth 2026: Race Preview, Course Guide and Key Dates
IRONMAN 70.3 Weymouth returns on 20 September 2026, drawing around 2,800 competitors to the stunning Dorset coastline for one of the most scenic middle-distance races on the UK calendar. With 26 weeks to go from now, there is still time to register and build a solid race plan.
The Course
Weymouth is renowned for its beautiful yet testing course. The swim takes place in Weymouth Bay — a sheltered, usually calm stretch of water that suits all levels. The 90km bike leg heads inland through the rolling Dorset countryside and includes a significant amount of climbing that catches many athletes off guard. The run is flat and fast along Weymouth’s famous seafront promenade, perfect for chasing a negative split.
- Swim: 1.9km in Weymouth Bay — usually calm and flat
- Bike: 90km through Dorset countryside — hilly, technically demanding
- Run: 21.1km along Weymouth seafront promenade — flat and fast
What Makes Weymouth Special
Weymouth has hosted IRONMAN events for over a decade, making it a beloved fixture on the UK triathlon calendar. The crowd support along the seafront during the run is outstanding, and the finish line on the beachfront promenade is one of the most memorable in UK triathlon. Transition takes place at Lodmoor Country Park, which also serves as the race village and athlete hub throughout the weekend.
Training Priorities Now
If you are targeting Weymouth in September, this is the time to lock in your base training. With approximately 26 weeks until race day, a 16-week training plan starting in late May would peak perfectly for September. Focus on the following areas over the coming months:
- Bike climbing: Dorset roads are hilly — build strength on climbs now
- Open water acclimatisation: UK waters are cold in spring; start getting in regularly from April
- Run volume: The flat run rewards strong runners — build your base mileage through spring
- Nutrition practice: Dial in your 90km fuelling strategy on long training rides
Entry and Travel
Weymouth is served by regular trains from London Waterloo (approximately 2.5 hours) and Bristol. The town has a good range of accommodation options, from seafront hotels to holiday parks slightly inland. Book early — the race weekend fills accommodation fast. Athletes travelling by car should plan for limited parking near the race venue and consider staying within walking distance of transition.
IRONMAN 70.3 Weymouth is one of the most iconic middle-distance races in the UK. Whether it is your first 70.3 or you are chasing a PB, the combination of scenic beauty, competitive fields, and a tough bike course makes Weymouth a race every British triathlete should experience at least once.
