Regeneron Great Limerick Run Half Marathon or Clonakilty Waterfront Marathon Half Marathon — which comes out ahead?

Regeneron Great Limerick Run Half Marathon has the stronger available profile on flat grade share and course flatness.

Route comparison snapshot

Regeneron Great Limerick Run Half Marathon

Mapped route
Held
Elevation profile
Held
course flatness
0.2% Favoured
flat grade share
80.6% Favoured
lower ascent
114 m
climbing density
5.4 m/km
net elevation
-3 m
maximum grade
5.4%

Clonakilty Waterfront Marathon Half Marathon

Mapped route
Held
Elevation profile
Held
course flatness
1.5%
flat grade share
55.3%
lower ascent
265 m
climbing density
12.6 m/km
net elevation
-8 m
maximum grade
12.6%
Head-to-head comparison
MetricRegeneron Great Limerick Run Half MarathonClonakilty Waterfront Marathon Half Marathon
Flat grade share80.6%55.3%
GAP factor (% slower than flat)0.2%1.5%
Uphill share9.7%23.5%
Steep-up share0.0%6.1%
Downhill share9.7%21.2%
Total ascent (m)114 m265 m
Climbing density (m/km)5.4 m/km12.6 m/km
Longest climb length (m)1,110 m1,810 m
Longest climb gain (m)19 m66 m
Longest climb average grade1.7%3.6%
Total descent (m)117 m274 m
Net elevation (m)-3 m-8 m
Max absolute grade5.4%12.6%
Start elevation (m)16 m25 m
Finish elevation (m)13 m17 m
Scenic score60/100Unavailable
Conditions87/100Unavailable

Only metrics available for at least one side are shown. A ✓ marks the better value for each metric (higher-is-better aware). Scores are out of 100 when available. Ascent, climbing density, max absolute grade and median finish describe course or field context and are not marked as better or worse.

Race facts that change the decision

Race facts comparison
FactRegeneron Great Limerick Run Half MarathonClonakilty Waterfront Marathon Half Marathon
Schedule

Exact race date not confirmed. Event weekend starts 2027-05-02 (legacy event-level date).

Exact race date not confirmed.

LocationLimerick, IrelandClonakilty, Ireland
Actual distance21.1 km21.1 km
raceindex.org mapped route heldHeldHeld
raceindex.org elevation profile heldHeldHeld
SurfaceRoadSealed roads
Elevation characterFlatUnavailable
TerrainRoadBeach
SceneryCity, Waterfront, Countryside, Riverside, HistoricCoastal, Waterfront, Countryside, Forest
AtmosphereBig City, Community, FestivalScenic Tour, Destination, Community
Total ascent114 m265 m
Climbing density5.4 m/km12.6 m/km
Total descent117 m274 m
Net elevation-3 m-8 m
Max absolute grade5.4%12.6%
Flat grade share80.6%55.3%
GAP factor0.2%1.5%
Entry modelOpenOpen

Schedule

Regeneron Great Limerick Run Half Marathon

Exact race date not confirmed. Event weekend starts 2027-05-02 (legacy event-level date).

Clonakilty Waterfront Marathon Half Marathon

Exact race date not confirmed.

Location

Regeneron Great Limerick Run Half Marathon
Limerick, Ireland
Clonakilty Waterfront Marathon Half Marathon
Clonakilty, Ireland

Actual distance

Regeneron Great Limerick Run Half Marathon
21.1 km
Clonakilty Waterfront Marathon Half Marathon
21.1 km

raceindex.org mapped route held

Regeneron Great Limerick Run Half Marathon
Held
Clonakilty Waterfront Marathon Half Marathon
Held

raceindex.org elevation profile held

Regeneron Great Limerick Run Half Marathon
Held
Clonakilty Waterfront Marathon Half Marathon
Held

Surface

Regeneron Great Limerick Run Half Marathon
Road
Clonakilty Waterfront Marathon Half Marathon
Sealed roads

Elevation character

Regeneron Great Limerick Run Half Marathon
Flat
Clonakilty Waterfront Marathon Half Marathon
Unavailable

Terrain

Regeneron Great Limerick Run Half Marathon
Road
Clonakilty Waterfront Marathon Half Marathon
Beach

Scenery

Regeneron Great Limerick Run Half Marathon
City, Waterfront, Countryside, Riverside, Historic
Clonakilty Waterfront Marathon Half Marathon
Coastal, Waterfront, Countryside, Forest

Atmosphere

Regeneron Great Limerick Run Half Marathon
Big City, Community, Festival
Clonakilty Waterfront Marathon Half Marathon
Scenic Tour, Destination, Community

Total ascent

Regeneron Great Limerick Run Half Marathon
114 m
Clonakilty Waterfront Marathon Half Marathon
265 m

Climbing density

Regeneron Great Limerick Run Half Marathon
5.4 m/km
Clonakilty Waterfront Marathon Half Marathon
12.6 m/km

Total descent

Regeneron Great Limerick Run Half Marathon
117 m
Clonakilty Waterfront Marathon Half Marathon
274 m

Net elevation

Regeneron Great Limerick Run Half Marathon
-3 m
Clonakilty Waterfront Marathon Half Marathon
-8 m

Max absolute grade

Regeneron Great Limerick Run Half Marathon
5.4%
Clonakilty Waterfront Marathon Half Marathon
12.6%

Flat grade share

Regeneron Great Limerick Run Half Marathon
80.6%
Clonakilty Waterfront Marathon Half Marathon
55.3%

GAP factor

Regeneron Great Limerick Run Half Marathon
0.2%
Clonakilty Waterfront Marathon Half Marathon
1.5%

Entry model

Regeneron Great Limerick Run Half Marathon
Open
Clonakilty Waterfront Marathon Half Marathon
Open

Facts are shown only when they exist in the sourced race record; Not held means no sourced value is held for that race.

Common questions

Which is flatter, Regeneron Great Limerick Run Half Marathon or Clonakilty Waterfront Marathon Half Marathon?

Regeneron Great Limerick Run Half Marathon has the lower GAP factor, making it the flatter course on our route model and more favourable on gradient alone.

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How figures are calculated →