Flat grade share
- MountainOne Steel Rail Races (Adams) Half Marathon
- 87.5% Favoured
Cambridge Half Marathon + 5K at CambridgeSide (Cambridge, MA) vs MountainOne Steel Rail Races (Adams) Half Marathon
A data-led head-to-head using sourced race facts and available derived figures under one published methodology.
Data current as ofCambridge Half Marathon + 5K at CambridgeSide (Cambridge, MA) or MountainOne Steel Rail Races (Adams) Half Marathon — which comes out ahead?
MountainOne Steel Rail Races (Adams) Half Marathon has the stronger available profile on flat grade share, course flatness and scenery score.
Route comparison snapshot
Cambridge Half Marathon + 5K at CambridgeSide (Cambridge, MA)
- Mapped route
- Held
- Elevation profile
- Held
- course flatness
- 2.4%
- flat grade share
- 58.3%
- lower ascent
- 273 m
- climbing density
- 12.9 m/km
- net elevation
- 3 m
- maximum grade
- 26.7%
MountainOne Steel Rail Races (Adams) Half Marathon
- Mapped route
- Held
- Elevation profile
- Held
- course flatness
- 0.5% Favoured
- flat grade share
- 87.5% Favoured
- lower ascent
- 114 m
- climbing density
- 5.4 m/km
- net elevation
- -0 m
- maximum grade
- 10.6%
| Metric | Cambridge Half Marathon + 5K at CambridgeSide (Cambridge, MA) | MountainOne Steel Rail Races (Adams) Half Marathon |
|---|---|---|
| Flat grade share | 58.3% | 87.5% ✓ |
| GAP factor (% slower than flat) | 2.4% | 0.5% ✓ |
| Uphill share | 21.0% | 6.4% |
| Steep-up share | 5.7% | 1.6% |
| Downhill share | 20.8% | 6.2% |
| Total ascent (m) | 273 m | 114 m |
| Climbing density (m/km) | 12.9 m/km | 5.4 m/km |
| Longest climb length (m) | 390 m | 870 m |
| Longest climb gain (m) | 22 m | 11 m |
| Longest climb average grade | 5.5% | 1.2% |
| Total descent (m) | 270 m | 114 m |
| Net elevation (m) | 3 m | -0 m |
| Max absolute grade | 26.7% | 10.6% |
| Start elevation (m) | 15 m | 243 m |
| Finish elevation (m) | 18 m | 242 m |
| Scenic score | 66/100 | 100/100 ✓ |
| Conditions | 84/100 ✓ | 44/100 |
GAP factor (% slower than flat)
- MountainOne Steel Rail Races (Adams) Half Marathon
- 0.5% Favoured
Uphill share
Steep-up share
Downhill share
Total ascent (m)
Climbing density (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
- MountainOne Steel Rail Races (Adams) Half Marathon
- 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.
Race facts that change the decision
| Fact | Cambridge Half Marathon + 5K at CambridgeSide (Cambridge, MA) | MountainOne Steel Rail Races (Adams) Half Marathon |
|---|---|---|
| Schedule | Exact race date not confirmed. Event weekend starts 2026-10-31 (legacy event-level date). | Exact race date not confirmed. Event weekend starts 2026-05-17 (legacy event-level date). |
| Location | Cambridge, Massachusetts | Adams, Massachusetts |
| Actual distance | 21.1 km | 21.1 km |
| raceindex.org mapped route held | Held | Held |
| raceindex.org elevation profile held | Held | Held |
| Course type | Unavailable | Out And Back |
| Surface | Paved city roads and riverfront paths, including Memorial Drive. | Paved rail trail (10 Foot Wide paved former railroad bed) |
| Elevation character | Flat | Unavailable |
| Terrain | Road | Trail |
| Scenery | Riverside, City, Waterfront, Historic | Countryside, Waterfront, Lakeside, Riverside, Mountain, Forest |
| Atmosphere | Charity, Big City, Community | Community, Competitive, Destination |
| Technicality | Non Technical | Unavailable |
| Total ascent | 273 m | 114 m |
| Climbing density | 12.9 m/km | 5.4 m/km |
| Total descent | 270 m | 114 m |
| Net elevation | 3 m | -0 m |
| Max absolute grade | 26.7% | 10.6% |
| Flat grade share | 58.3% | 87.5% |
| GAP factor | 2.4% | 0.5% |
| Entry model | Open | Open |
Schedule
- Cambridge Half Marathon + 5K at CambridgeSide (Cambridge, MA)
Exact race date not confirmed. Event weekend starts 2026-10-31 (legacy event-level date).
- MountainOne Steel Rail Races (Adams) Half Marathon
Exact race date not confirmed. Event weekend starts 2026-05-17 (legacy event-level date).
Location
- Cambridge Half Marathon + 5K at CambridgeSide (Cambridge, MA)
- Cambridge, Massachusetts
- MountainOne Steel Rail Races (Adams) Half Marathon
- Adams, Massachusetts
Actual distance
- Cambridge Half Marathon + 5K at CambridgeSide (Cambridge, MA)
- 21.1 km
- MountainOne Steel Rail Races (Adams) Half Marathon
- 21.1 km
raceindex.org mapped route held
- Cambridge Half Marathon + 5K at CambridgeSide (Cambridge, MA)
- Held
- MountainOne Steel Rail Races (Adams) Half Marathon
- Held
raceindex.org elevation profile held
- Cambridge Half Marathon + 5K at CambridgeSide (Cambridge, MA)
- Held
- MountainOne Steel Rail Races (Adams) Half Marathon
- Held
Course type
- Cambridge Half Marathon + 5K at CambridgeSide (Cambridge, MA)
- Unavailable
- MountainOne Steel Rail Races (Adams) Half Marathon
- Out And Back
Surface
- Cambridge Half Marathon + 5K at CambridgeSide (Cambridge, MA)
- Paved city roads and riverfront paths, including Memorial Drive.
- MountainOne Steel Rail Races (Adams) Half Marathon
- Paved rail trail (10 Foot Wide paved former railroad bed)
Elevation character
- Cambridge Half Marathon + 5K at CambridgeSide (Cambridge, MA)
- Flat
- MountainOne Steel Rail Races (Adams) Half Marathon
- Unavailable
Terrain
- Cambridge Half Marathon + 5K at CambridgeSide (Cambridge, MA)
- Road
- MountainOne Steel Rail Races (Adams) Half Marathon
- Trail
Scenery
- Cambridge Half Marathon + 5K at CambridgeSide (Cambridge, MA)
- Riverside, City, Waterfront, Historic
- MountainOne Steel Rail Races (Adams) Half Marathon
- Countryside, Waterfront, Lakeside, Riverside, Mountain, Forest
Atmosphere
- Cambridge Half Marathon + 5K at CambridgeSide (Cambridge, MA)
- Charity, Big City, Community
- MountainOne Steel Rail Races (Adams) Half Marathon
- Community, Competitive, Destination
Technicality
- Cambridge Half Marathon + 5K at CambridgeSide (Cambridge, MA)
- Non Technical
- MountainOne Steel Rail Races (Adams) Half Marathon
- Unavailable
Total ascent
- Cambridge Half Marathon + 5K at CambridgeSide (Cambridge, MA)
- 273 m
- MountainOne Steel Rail Races (Adams) Half Marathon
- 114 m
Climbing density
- Cambridge Half Marathon + 5K at CambridgeSide (Cambridge, MA)
- 12.9 m/km
- MountainOne Steel Rail Races (Adams) Half Marathon
- 5.4 m/km
Total descent
- Cambridge Half Marathon + 5K at CambridgeSide (Cambridge, MA)
- 270 m
- MountainOne Steel Rail Races (Adams) Half Marathon
- 114 m
Net elevation
- Cambridge Half Marathon + 5K at CambridgeSide (Cambridge, MA)
- 3 m
- MountainOne Steel Rail Races (Adams) Half Marathon
- -0 m
Max absolute grade
- Cambridge Half Marathon + 5K at CambridgeSide (Cambridge, MA)
- 26.7%
- MountainOne Steel Rail Races (Adams) Half Marathon
- 10.6%
Flat grade share
- Cambridge Half Marathon + 5K at CambridgeSide (Cambridge, MA)
- 58.3%
- MountainOne Steel Rail Races (Adams) Half Marathon
- 87.5%
GAP factor
- Cambridge Half Marathon + 5K at CambridgeSide (Cambridge, MA)
- 2.4%
- MountainOne Steel Rail Races (Adams) Half Marathon
- 0.5%
Entry model
- Cambridge Half Marathon + 5K at CambridgeSide (Cambridge, MA)
- Open
- MountainOne Steel Rail Races (Adams) 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, Cambridge Half Marathon + 5K at CambridgeSide (Cambridge, MA) or MountainOne Steel Rail Races (Adams) Half Marathon?
MountainOne Steel Rail Races (Adams) Half Marathon has the lower GAP factor, making it the flatter course on our route model and more favourable on gradient alone.