Predict your Cork City Marathon finish time from a recent race, with the course climb and typical race-day weather already built in. Then use the course notes below to plan your pacing and fuelling.
Use a recent all-out race on a fairly flat course in mild weather.
Filled in with the typical weather for the race month. Change it to the forecast closer to race day.
Before we send your report: your gels
Check the label on the gel you train with. We use this to build your gel-by-gel race timeline. Already training your gut to take more carbs? Set your own hourly target.
Get your full race report by email: your pacing plan split by split, carbohydrate, fluid and sodium per hour for this finish time, a gel-by-gel race timeline, and course notes.
Course figures are approximate and come from a previous year’s route. The route changed for 2026, so check the official race website for the current course.
42.2 km through Cork city.
About 75 m of climbing and 75 m of descent. One of the flatter marathons in our predictor.
Mostly flat with a few short rises. A good course for a personal best.
Around 16°C and 70% humidity on race day in late May or early June. Warmer than Dublin in October.
With little climbing, the main things that decide your time in Cork are pacing and heat, not hills.
Pacing. Cork is one of the flatter marathons in Ireland, so even pacing works: aim for kilometre splits within a few seconds of each other. If it’s warm, start a little slower and use the predictor’s weather adjustment to set a realistic target.
Fuelling. Most marathon runners aim for 60–75 g of carbohydrate per hour, and more if they have practised it in training. In warm weather, fluid and sodium matter more. The predictor’s emailed report and the fuelling calculator give you a gel timeline by kilometre.
In person at the Endurance Lab studio in Dún Laoghaire.
A 60-minute sports massage a few days before the race to loosen tight legs without leaving them heavy. €60. Book a sports massage →
Book it now for the week after the race, once the worst of the soreness has eased. €60. Book a sports massage →
Turn the prediction into a race. Pick the support that fits your build-up.
A plan built around you and your race, adjusted week by week by your coach. See running coaching →
A VO2max or lactate test in the lab gives you heart-rate and pace zones based on your own physiology. VO2max test → Lactate test →
5K, 10K and half marathon plans on the Endurance Lab 7-zone method. One plan, one purchase. See the plans →
Carbohydrate, fluid and sodium targets for race day, with a gel timeline. Plan your fuelling →
More race guides. Ireland: Dublin Marathon · Dublin Half Marathon · Belfast City Marathon. Portugal: Lisbon Marathon · Funchal Marathon.
More free tools: Race time predictor · Zone calculator · All free tools
