Flat grade share
- Maine Marathon (Portland) Half Marathon
- 77.3% Favoured
Maine Marathon (Portland) vs Maine Marathon (Portland) Half Marathon
A data-led head-to-head using sourced race facts and available derived figures under one published methodology.
Data current as ofMaine Marathon (Portland) or Maine Marathon (Portland) Half Marathon — which comes out ahead?
Maine Marathon (Portland) Half Marathon has the stronger available profile on flat grade share and course flatness.
Route comparison snapshot
Maine Marathon (Portland)
- Mapped route
- Held
- Elevation profile
- Held
- course flatness
- 0.9%
- flat grade share
- 67.3%
- lower ascent
- 357 m
- climbing density
- 8.5 m/km
- net elevation
- 0 m
- maximum grade
- 15.5%
Maine Marathon (Portland) Half Marathon
- Mapped route
- Held
- Elevation profile
- Held
- course flatness
- 0.6% Favoured
- flat grade share
- 77.3% Favoured
- lower ascent
- 133 m
- climbing density
- 6.3 m/km
- net elevation
- 0 m
- maximum grade
- 9.8%
| Metric | Maine Marathon (Portland) | Maine Marathon (Portland) Half Marathon |
|---|---|---|
| Flat grade share | 67.3% | 77.3% ✓ |
| GAP factor (% slower than flat) | 0.9% | 0.6% ✓ |
| Uphill share | 16.5% | 10.7% |
| Steep-up share | 1.7% | 1.5% |
| Downhill share | 16.2% | 12.0% |
| Total ascent (m) | 357 m | 133 m |
| Climbing density (m/km) | 8.5 m/km | 6.3 m/km |
| Longest climb length (m) | 670 m | 530 m |
| Longest climb gain (m) | 39 m | 18 m |
| Longest climb average grade | 5.9% | 3.4% |
| Total descent (m) | 358 m | 133 m |
| Net elevation (m) | 0 m | 0 m |
| Max absolute grade | 15.5% | 9.8% |
| Start elevation (m) | 4 m | 4 m |
| Finish elevation (m) | 4 m | 4 m |
| Scenic score | 100/100 ✓ | 94/100 |
| Conditions | 84/100 | 84/100 |
GAP factor (% slower than flat)
- Maine Marathon (Portland) Half Marathon
- 0.6% Favoured
Uphill share
Steep-up share
Downhill share
Total ascent (m)
Climbing density (m/km)
- Maine Marathon (Portland)
- 8.5 m/km
Longest climb length (m)
Longest climb gain (m)
Longest climb average grade
Total descent (m)
Net elevation (m)
Max absolute grade
Start elevation (m)
Finish elevation (m)
Scenic score
- Maine Marathon (Portland)
- 100/100 Favoured
Conditions
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 | Maine Marathon (Portland) | Maine Marathon (Portland) Half Marathon |
|---|---|---|
| Schedule | Exact race date not confirmed. Event weekend starts 2026-10-04 (legacy event-level date). | Exact race date not confirmed. Event weekend starts 2026-10-04 (legacy event-level date). |
| Location | Portland, Maine | Portland, Maine |
| Actual distance | 42.2 km | 21.1 km |
| raceindex.org mapped route held | Held | Held |
| raceindex.org elevation profile held | Held | Held |
| Course type | Out And Back | Unavailable |
| Surface | Road | Road |
| Elevation character | Rolling | Unavailable |
| Terrain | Road, Trail | Trail, Road |
| Scenery | Coastal, Mountain, Waterfront, Forest, City, Countryside | Coastal, Forest, Waterfront, City, Countryside |
| Atmosphere | Community, Charity, Scenic Tour | Community, Charity, Scenic Tour |
| Technicality | Non Technical | Unavailable |
| Total ascent | 357 m | 133 m |
| Climbing density | 8.5 m/km | 6.3 m/km |
| Total descent | 358 m | 133 m |
| Net elevation | 0 m | 0 m |
| Max absolute grade | 15.5% | 9.8% |
| Flat grade share | 67.3% | 77.3% |
| GAP factor | 0.9% | 0.6% |
| Cutoff | 6:15:00 | Unavailable |
| Entry model | Open | Open |
| Qualifying status | Boston_equivalent | Unavailable |
Schedule
- Maine Marathon (Portland)
Exact race date not confirmed. Event weekend starts 2026-10-04 (legacy event-level date).
- Maine Marathon (Portland) Half Marathon
Exact race date not confirmed. Event weekend starts 2026-10-04 (legacy event-level date).
Location
- Maine Marathon (Portland)
- Portland, Maine
- Maine Marathon (Portland) Half Marathon
- Portland, Maine
Actual distance
- Maine Marathon (Portland)
- 42.2 km
- Maine Marathon (Portland) Half Marathon
- 21.1 km
raceindex.org mapped route held
- Maine Marathon (Portland)
- Held
- Maine Marathon (Portland) Half Marathon
- Held
raceindex.org elevation profile held
- Maine Marathon (Portland)
- Held
- Maine Marathon (Portland) Half Marathon
- Held
Course type
- Maine Marathon (Portland)
- Out And Back
- Maine Marathon (Portland) Half Marathon
- Unavailable
Surface
- Maine Marathon (Portland)
- Road
- Maine Marathon (Portland) Half Marathon
- Road
Elevation character
- Maine Marathon (Portland)
- Rolling
- Maine Marathon (Portland) Half Marathon
- Unavailable
Terrain
- Maine Marathon (Portland)
- Road, Trail
- Maine Marathon (Portland) Half Marathon
- Trail, Road
Scenery
- Maine Marathon (Portland)
- Coastal, Mountain, Waterfront, Forest, City, Countryside
- Maine Marathon (Portland) Half Marathon
- Coastal, Forest, Waterfront, City, Countryside
Atmosphere
- Maine Marathon (Portland)
- Community, Charity, Scenic Tour
- Maine Marathon (Portland) Half Marathon
- Community, Charity, Scenic Tour
Technicality
- Maine Marathon (Portland)
- Non Technical
- Maine Marathon (Portland) Half Marathon
- Unavailable
Total ascent
- Maine Marathon (Portland)
- 357 m
- Maine Marathon (Portland) Half Marathon
- 133 m
Climbing density
- Maine Marathon (Portland)
- 8.5 m/km
- Maine Marathon (Portland) Half Marathon
- 6.3 m/km
Total descent
- Maine Marathon (Portland)
- 358 m
- Maine Marathon (Portland) Half Marathon
- 133 m
Net elevation
- Maine Marathon (Portland)
- 0 m
- Maine Marathon (Portland) Half Marathon
- 0 m
Max absolute grade
- Maine Marathon (Portland)
- 15.5%
- Maine Marathon (Portland) Half Marathon
- 9.8%
Flat grade share
- Maine Marathon (Portland)
- 67.3%
- Maine Marathon (Portland) Half Marathon
- 77.3%
GAP factor
- Maine Marathon (Portland)
- 0.9%
- Maine Marathon (Portland) Half Marathon
- 0.6%
Cutoff
- Maine Marathon (Portland)
- 6:15:00
- Maine Marathon (Portland) Half Marathon
- Unavailable
Entry model
- Maine Marathon (Portland)
- Open
- Maine Marathon (Portland) Half Marathon
- Open
Qualifying status
- Maine Marathon (Portland)
- Boston_equivalent
- Maine Marathon (Portland) Half Marathon
- Unavailable
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, Maine Marathon (Portland) or Maine Marathon (Portland) Half Marathon?
Maine Marathon (Portland) Half Marathon has the lower GAP factor, making it the flatter course on our route model and more favourable on gradient alone.