Flat grade share
- Belfast City Marathon Half Marathon
- 90.1% Favoured
Belfast City Marathon Half Marathon vs Belfast City Marathon
A data-led head-to-head using sourced race facts and available derived figures under one published methodology.
Data current as ofBelfast City Marathon Half Marathon or Belfast City Marathon — which comes out ahead?
Belfast City Marathon Half Marathon has the stronger available profile on flat grade share, value score and entry fee.
Route comparison snapshot
Belfast City Marathon Half Marathon
- Mapped route
- Held
- Elevation profile
- Held
- course flatness
- 0.2%
- flat grade share
- 90.1% Favoured
- lower ascent
- 75 m
- climbing density
- 3.6 m/km
- net elevation
- 0 m
- maximum grade
- 5.9%
Belfast City Marathon
- Mapped route
- Held
- Elevation profile
- Held
- course flatness
- -0.1% Favoured
- flat grade share
- 88.2%
- lower ascent
- 177 m
- climbing density
- 4.2 m/km
- net elevation
- -22 m
- maximum grade
- 5.4%
| Metric | Belfast City Marathon Half Marathon | Belfast City Marathon |
|---|---|---|
| Flat grade share | 90.1% ✓ | 88.2% |
| GAP factor (% slower than flat) | 0.2% | -0.1% ✓ |
| Uphill share | 4.6% | 5.9% |
| Steep-up share | 0.0% | 0.0% |
| Downhill share | 5.2% | 5.9% |
| Total ascent (m) | 75 m | 177 m |
| Climbing density (m/km) | 3.6 m/km | 4.2 m/km |
| Longest climb length (m) | 1,020 m | 2,010 m |
| Longest climb gain (m) | 14 m | 44 m |
| Longest climb average grade | 1.4% | 2.2% |
| Total descent (m) | 75 m | 198 m |
| Net elevation (m) | 0 m | -22 m |
| Max absolute grade | 5.9% | 5.4% |
| Start elevation (m) | 2 m | 24 m |
| Finish elevation (m) | 2 m | 2 m |
| Value | 82/100 ✓ | 76/100 |
| Scenic score | 43/100 | 61/100 ✓ |
| Conditions | 86/100 | 86/100 |
| Entry fee (GBP) | £42 ✓ | £75 |
| Lowest modelled true cost (GBP) | £172 ✓ | £205 |
GAP factor (% slower than flat)
- Belfast City Marathon
- -0.1% Favoured
Uphill share
Steep-up share
Downhill share
Total ascent (m)
Climbing density (m/km)
- Belfast City Marathon
- 4.2 m/km
Longest climb length (m)
- Belfast City Marathon
- 2,010 m
Longest climb gain (m)
Longest climb average grade
Total descent (m)
Net elevation (m)
Max absolute grade
Start elevation (m)
Finish elevation (m)
Value
- Belfast City Marathon Half Marathon
- 82/100 Favoured
- Belfast City Marathon
- 76/100
Scenic score
- Belfast City Marathon
- 61/100 Favoured
Conditions
- Belfast City Marathon
- 86/100
Entry fee (GBP)
- Belfast City Marathon Half Marathon
- £42 Favoured
Lowest modelled true cost (GBP)
- Belfast City Marathon Half Marathon
- £172 Favoured
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.
Same-distance comparisons are most meaningful; cross-distance metrics are contextual.
Race facts that change the decision
| Fact | Belfast City Marathon Half Marathon | Belfast City Marathon |
|---|---|---|
| Schedule | Exact race date not confirmed. Event weekend starts 2027-05-02 (legacy event-level date). | Exact race date awaiting a fresh source check. |
| Location | Belfast, Northern Ireland | Belfast, Northern Ireland |
| Actual distance | 21.1 km | 42.2 km |
| raceindex.org mapped route held | Held | Held |
| raceindex.org elevation profile held | Held | Held |
| Course type | Unavailable | Point To Point |
| Elevation character | Unavailable | Rolling |
| Terrain | Unavailable | Road |
| Scenery | City, Riverside, Parkland, Waterfront | Waterfront, City, Riverside, Parkland |
| Atmosphere | Big City, Community | Big City, Community |
| Technicality | Unavailable | Non Technical |
| Total ascent | 75 m | 177 m |
| Climbing density | 3.6 m/km | 4.2 m/km |
| Total descent | 75 m | 198 m |
| Net elevation | 0 m | -22 m |
| Max absolute grade | 5.9% | 5.4% |
| Flat grade share | 90.1% | 88.2% |
| GAP factor | 0.2% | -0.1% |
| Cutoff | 3:00:00 | 6:00:00 |
| Entry model | Open | Open |
| Entry fee | £42 | £75 |
| Lowest modelled true cost | £172 | £205 |
| Cost model origin | National Average | National Average |
Schedule
- Belfast City Marathon Half Marathon
Exact race date not confirmed. Event weekend starts 2027-05-02 (legacy event-level date).
- Belfast City Marathon
Exact race date awaiting a fresh source check.
Location
- Belfast City Marathon Half Marathon
- Belfast, Northern Ireland
- Belfast City Marathon
- Belfast, Northern Ireland
Actual distance
- Belfast City Marathon Half Marathon
- 21.1 km
- Belfast City Marathon
- 42.2 km
raceindex.org mapped route held
- Belfast City Marathon Half Marathon
- Held
- Belfast City Marathon
- Held
raceindex.org elevation profile held
- Belfast City Marathon Half Marathon
- Held
- Belfast City Marathon
- Held
Course type
- Belfast City Marathon Half Marathon
- Unavailable
- Belfast City Marathon
- Point To Point
Elevation character
- Belfast City Marathon Half Marathon
- Unavailable
- Belfast City Marathon
- Rolling
Terrain
- Belfast City Marathon Half Marathon
- Unavailable
- Belfast City Marathon
- Road
Scenery
- Belfast City Marathon Half Marathon
- City, Riverside, Parkland, Waterfront
- Belfast City Marathon
- Waterfront, City, Riverside, Parkland
Atmosphere
- Belfast City Marathon Half Marathon
- Big City, Community
- Belfast City Marathon
- Big City, Community
Technicality
- Belfast City Marathon Half Marathon
- Unavailable
- Belfast City Marathon
- Non Technical
Total ascent
- Belfast City Marathon Half Marathon
- 75 m
- Belfast City Marathon
- 177 m
Climbing density
- Belfast City Marathon Half Marathon
- 3.6 m/km
- Belfast City Marathon
- 4.2 m/km
Total descent
- Belfast City Marathon Half Marathon
- 75 m
- Belfast City Marathon
- 198 m
Net elevation
- Belfast City Marathon Half Marathon
- 0 m
- Belfast City Marathon
- -22 m
Max absolute grade
- Belfast City Marathon Half Marathon
- 5.9%
- Belfast City Marathon
- 5.4%
Flat grade share
- Belfast City Marathon Half Marathon
- 90.1%
- Belfast City Marathon
- 88.2%
GAP factor
- Belfast City Marathon Half Marathon
- 0.2%
- Belfast City Marathon
- -0.1%
Cutoff
- Belfast City Marathon Half Marathon
- 3:00:00
- Belfast City Marathon
- 6:00:00
Entry model
- Belfast City Marathon Half Marathon
- Open
- Belfast City Marathon
- Open
Entry fee
- Belfast City Marathon Half Marathon
- £42
- Belfast City Marathon
- £75
Lowest modelled true cost
- Belfast City Marathon Half Marathon
- £172
- Belfast City Marathon
- £205
Cost model origin
- Belfast City Marathon Half Marathon
- National Average
- Belfast City Marathon
- National Average
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, Belfast City Marathon Half Marathon or Belfast City Marathon?
Belfast City Marathon has the lower GAP factor, making it the flatter course on our route model and more favourable on gradient alone.