Dublin, Ireland
Irish Life Dublin Marathon 2026 Pacing Plan
Starts near Fitzwilliam Square, passes St Patrick's Cathedral, crosses the Liffey onto the Northside, and enters Phoenix Park (Europe's largest enclosed city park) around the 10km mark for a stretch past Dublin Zoo on Chesterfield Avenue. The short climb exiting the park near Castleknock is the course's main incline; the rest is gently undulating through southern neighborhoods like Terenure and Rathgar before finishing at Merrion Square.
Distance
42.6 km
Gain / loss
+136m / -137m
Race date
Typical race-day weather
10°C, 14 km/h
Weather is a 10-year seasonal average for this course's location and month, not a forecast for a specific date. See FAQ.
Elevation profile
Sample strategy: 3:45:00 goal
A real, AI-generated excerpt of what Splitshape produces for this exact course, not a hand-written example. Upload your own goal and recent results to get the full plan.
KM 0-3: You drop out fast at 5:07-4:59/km through a net downhill opening: the field will surge, but this stretch is quick because the road tips down, not because you're fit enough to hold it. Let the pace happen, don't chase it further. You cross 3K at 15:18, well inside goal pace, and that cushion means nothing yet.
KM 4-12: The course turns uphill and rolling here, and pace drifts out to 5:18-5:33/km as the grade works against you. This is honest pace for the terrain, not a fitness problem. Resist the urge to fight the hills to keep the average down. You pass 10K at 53:28 still on plan; treat that split as confirmation, not a signal to push.
KM 13-16: A sharp downhill block, 4:44, 5:03, 5:01, 4:41/km, gives you free speed. Let gravity do the work rather than actively accelerating; overcooking these descents is exactly what wrecks quads for the back half. You go through halfway around 1:52 still comfortably on pace, banking real time for the first time all race.
Frequently asked questions
Is the Dublin Marathon course flat or hilly?
The course is largely gently undulating rather than flat, with only 136 m of total elevation gain over 42.6 km. The main incline comes exiting Phoenix Park near Castleknock, after which the route rolls through southern neighborhoods like Terenure and Rathgar before finishing at Merrion Square.
Where is the toughest climb on the Dublin Marathon route?
The course's main incline is the short climb exiting Phoenix Park near Castleknock, which comes after the roughly 10km mark where the race passes Dublin Zoo on Chesterfield Avenue. Aside from this section, the elevation profile stays gentle, so runners should treat this as the one spot requiring a deliberate effort adjustment.
Should I run an even or negative split at the Dublin Marathon?
Given the near-equal 136 m of gain and 137 m of loss, the course doesn't strongly favor a fast finish or a fast start on elevation alone. An even-effort approach through the gentle undulations of the second half suits the profile well. The Castleknock climb after Phoenix Park is the key spot to avoid overcooking your pace before the flatter closing miles into Merrion Square.
What weather should I expect on Dublin Marathon race day?
Typical race-day conditions are around 9.8°C with wind near 13.9 km/h, cool temperatures favorable for marathon pacing. Runners should still account for the moderate breeze, particularly through open sections like Chesterfield Avenue in Phoenix Park.
Does the Dublin Marathon route go through Phoenix Park?
Yes, the course enters Phoenix Park, Europe's largest enclosed city park, around the 10km mark and runs past Dublin Zoo along Chesterfield Avenue. Exiting the park near Castleknock brings the course's main climb before the route settles back into gently undulating terrain.
Build your Irish Life Dublin Marathon plan
Upload your own GPX or use Irish Life Dublin Marathon's course, set your goal and recent results, and get the full km-by-km strategy.
Your plan also includes a gel schedule timed to your splits on this course, and a carb loading guide. How the fueling plan works →
Build my Irish Life Dublin Marathon plan →Splitshape is an independent pacing-plan tool and is not an official partner, sponsor, or affiliate of the Irish Life Dublin Marathon or its organizers. Course data source: digitized from the official course.