What is the water temperature at Split Triathlon 70.3 and can I wear a wetsuit?

The swim takes place in river water with an average temperature of 17°C during race month. Wetsuits are conditional — typically depends on race-day water temperature.

How hilly is the Split Triathlon 70.3 bike course?

The 90km bike course has 376m of elevation gain and is classified as rolling. The course is loop on road surface. Drafting is not allowed.

What is the weather like on race day at Split Triathlon 70.3?

Expect temperatures between undefined°C and undefined°C (average 19°C) with 78% humidity. There is a 37% chance of rain and average wind speeds of 7 km/h. Typical conditions in Split

How big is the Split Triathlon 70.3 and when was it first held?

The Split Triathlon 70.3 was established in 2015 (11 years ago) and has approximately 980 finishers per edition.

What is the average finish time for Split Triathlon 70.3?

The average finish time is approximately 5 hours and 30 minutes. This can vary based on weather conditions, course difficulty, and athlete experience level.

What are the swim conditions like at Split Triathlon 70.3?

The 1900m swim is in river water with calm conditions. The format is open-water. River swim in Split

Split Triathlon 70.3 — Guide, Training Plan & Tips

Average Finish Time 05:30:00

Total Finishers 980

Temperature 19°C

Water Temperature 17°C

Bike Elevation ↑376m

Established 2015

"City-centre triathlon in Split — race through iconic streets and waterways."

🏊 Swim

Distance 1900m

Water river (open-water)

Water Temp 17°C

Wetsuit conditional

River swim in Split

🚴 Bike

Distance 90km

Elevation ↑376m

Profile rolling

Drafting Non-drafting

Rolling bike course around Split

🏃 Run

Distance 21.1km

Elevation ↑56m

Surface road

Topology out-and-back

Run through Split

Transition Details

T1 — Swim → Bike

T2 — Bike → Run

T1/T2 are in the same location · Surface: pavement

Weather

Air Temp 19°C

Humidity 78%

Rain Chance 37%

Wind 7 km/h

Typical conditions in Split

Registration

Registration Opens Invalid Date

Entry Cost €387

Time Limit 8.5h

https://www.example.com/split-triathlon-70-3

The Story

Seventy point three miles through Split. That's 1.9km in the water, 90km on the bike, and a half-marathon to finish — the world's most popular triathlon distance, in a city that earns the right to host it. The 1.9km swim sends you into cool flowing river at 17°C — cool enough to want a wetsuit, warm enough to swim without panic. It's long enough that a poor start costs real time, short enough that strong swimmers can build a genuine lead. The 90km bike is the centrepiece: rolling with some honest climbs terrain with 376m of climbing that never lets you settle. At 70.3 distance, the bike is where races are won and lost — 90km of rolling road demands constant effort management. Off the bike, a flat 21.1km run through Split. It sounds simple. After 90km in the saddle, nothing about a half-marathon is simple. Start conservative and build — that's the 70.3 formula. It's a full race at 70.3 miles — and this course makes you earn every one of them.

"The swim wakes you up, the bike breaks you down, and the half-marathon shows you who you really are. That's 70.3 in Split."

Age-group athlete — Post-race, Split Triathlon 70.3

What It Feels Like

70.3 triathlon with Split character. This course suits a broad range of 70.3 athletes — the course is honest enough to challenge veterans and achievable enough for well-prepared first-timers. Five-plus hours of racing through a city this distinctive — the setting adds a dimension no training plan can replicate.

🏊 The Swim

A 1.9km river swim at 17°C. Current adds a variable that changes the race — sometimes helping, sometimes fighting you. Over 1.9km, reading the current correctly can save minutes. Cool enough to want a wetsuit, warm enough to swim without panic. Check the race briefing for swim direction and expected flow conditions.

🚴 The Bike

90km of rolling terrain with 376m of climbing — the course signature. The rises are frequent enough to break any rhythm you try to establish. Over 90km, the cumulative elevation demands constant gear management and power discipline. Don't chase speed on the descents; recover there instead. This bike rewards riders who think in power, not pace.

🏃 The Run

21.1km on flat Split streets. The course is forgiving; your legs may not be. A flat run at the end of a 70.3 rewards patience and fuelling discipline. Negative-split this half-marathon: start 10-15 sec/km slower than goal pace and build. The athletes passing people in the last 5km are the ones who got the bike right.

💡 Insider Tips

→ At 17°C, the water is cool enough to tighten your breathing on entry. Practice cold-water starts in training — jump in and swim 200m hard, then settle. The 1.9km swim is long enough that early panic costs minutes, not seconds.
→ River swims can have current — over 1.9km this matters more than in shorter distances. Check the race briefing for swim direction and expected flow. Position yourself to use the current where possible, and ferry-glide at an angle across any cross-current rather than fighting it head-on.
→ Nutrition is the fourth discipline at 70.3 distance. Practice your race-day fuelling in training until it's automatic. Target 60-80g of carbs per hour on the bike (gels, drink mix, or both), and carry at least one gel for the run. Under-fuelling a 90km bike destroys a half-marathon.