Flat grade share
- Juneteenth Half Marathon & 10K (Washington DC)
- 42.3% Favoured
Juneteenth Half Marathon & 10K (Washington DC) vs Jack & Jill's Downhill Marathon & Half Half Marathon
A data-led head-to-head using sourced race facts and available derived figures under one published methodology.
Data current as ofJuneteenth Half Marathon & 10K (Washington DC) or Jack & Jill's Downhill Marathon & Half Half Marathon — which comes out ahead?
Jack & Jill's Downhill Marathon & Half Half Marathon has the stronger available profile on course flatness and conditions.
Route comparison snapshot
Juneteenth Half Marathon & 10K (Washington DC)
- Mapped route
- Held
- Elevation profile
- Held
- course flatness
- 3.2%
- flat grade share
- 42.3% Favoured
- lower ascent
- 396 m
- climbing density
- 18.7 m/km
- net elevation
- -2 m
- maximum grade
- 16.0%
Jack & Jill's Downhill Marathon & Half Half Marathon
- Mapped route
- Held
- Elevation profile
- Held
- course flatness
- -1.5% Favoured
- flat grade share
- 40.2%
- lower ascent
- 311 m
- climbing density
- 14.7 m/km
- net elevation
- -264 m
- maximum grade
- 31.2%
| Metric | Juneteenth Half Marathon & 10K (Washington DC) | Jack & Jill's Downhill Marathon & Half Half Marathon |
|---|---|---|
| Flat grade share | 42.3% ✓ | 40.2% |
| GAP factor (% slower than flat) | 3.2% | -1.5% ✓ |
| Uphill share | 28.2% | 23.0% |
| Steep-up share | 11.3% | 9.0% |
| Downhill share | 29.5% | 36.8% |
| Total ascent (m) | 396 m | 311 m |
| Climbing density (m/km) | 18.7 m/km | 14.7 m/km |
| Longest climb length (m) | 360 m | 140 m |
| Longest climb gain (m) | 44 m | 17 m |
| Longest climb average grade | 12.3% | 12.5% |
| Total descent (m) | 398 m | 574 m |
| Net elevation (m) | -2 m | -264 m |
| Max absolute grade | 16.0% | 31.2% |
| Start elevation (m) | 82 m | 782 m |
| Finish elevation (m) | 80 m | 518 m |
| Scenic score | 100/100 | 100/100 |
| Conditions | 41/100 | 75/100 ✓ |
GAP factor (% slower than flat)
- Jack & Jill's Downhill Marathon & Half Half Marathon
- -1.5% 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
Conditions
- Jack & Jill's Downhill Marathon & Half Half Marathon
- 75/100 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.
Race facts that change the decision
| Fact | Juneteenth Half Marathon & 10K (Washington DC) | Jack & Jill's Downhill Marathon & Half Half Marathon |
|---|---|---|
| Schedule | Exact race date not confirmed. Event weekend starts 2026-06-13 (legacy event-level date). | Exact race date not confirmed. Event weekend starts 2026-07-25 (legacy event-level date). |
| Location | Washington, Dc | Hyak (Snoqualmie Pass) to North Bend, Washington |
| Actual distance | 21.1 km | 21.1 km |
| raceindex.org mapped route held | Held | Held |
| raceindex.org elevation profile held | Held | Held |
| Course type | Out And Back | Point To Point |
| Surface | Off Road dirt trail (proper trail run) along the Civil War Defenses of Washington Trail | Unavailable |
| Elevation character | Hilly | Unavailable |
| Terrain | Trail, Fell | Trail |
| Scenery | Parkland, Mountain, Forest, Riverside, Waterfront, Historic, Moorland, City | Countryside, Historic, Parkland, Mountain, Forest, Lakeside |
| Atmosphere | Community, Festival, Charity | Destination, Scenic Tour, Wilderness |
| Technicality | Technical | Unavailable |
| Total ascent | 396 m | 311 m |
| Climbing density | 18.7 m/km | 14.7 m/km |
| Total descent | 398 m | 574 m |
| Net elevation | -2 m | -264 m |
| Max absolute grade | 16.0% | 31.2% |
| Flat grade share | 42.3% | 40.2% |
| GAP factor | 3.2% | -1.5% |
| Cutoff | Unavailable | 4:00:00 |
| Entry model | Open | Open |
Schedule
- Juneteenth Half Marathon & 10K (Washington DC)
Exact race date not confirmed. Event weekend starts 2026-06-13 (legacy event-level date).
- Jack & Jill's Downhill Marathon & Half Half Marathon
Exact race date not confirmed. Event weekend starts 2026-07-25 (legacy event-level date).
Location
- Juneteenth Half Marathon & 10K (Washington DC)
- Washington, Dc
- Jack & Jill's Downhill Marathon & Half Half Marathon
- Hyak (Snoqualmie Pass) to North Bend, Washington
Actual distance
- Juneteenth Half Marathon & 10K (Washington DC)
- 21.1 km
- Jack & Jill's Downhill Marathon & Half Half Marathon
- 21.1 km
raceindex.org mapped route held
- Juneteenth Half Marathon & 10K (Washington DC)
- Held
- Jack & Jill's Downhill Marathon & Half Half Marathon
- Held
raceindex.org elevation profile held
- Juneteenth Half Marathon & 10K (Washington DC)
- Held
- Jack & Jill's Downhill Marathon & Half Half Marathon
- Held
Course type
- Juneteenth Half Marathon & 10K (Washington DC)
- Out And Back
- Jack & Jill's Downhill Marathon & Half Half Marathon
- Point To Point
Surface
- Juneteenth Half Marathon & 10K (Washington DC)
- Off Road dirt trail (proper trail run) along the Civil War Defenses of Washington Trail
- Jack & Jill's Downhill Marathon & Half Half Marathon
- Unavailable
Elevation character
- Juneteenth Half Marathon & 10K (Washington DC)
- Hilly
- Jack & Jill's Downhill Marathon & Half Half Marathon
- Unavailable
Terrain
- Juneteenth Half Marathon & 10K (Washington DC)
- Trail, Fell
- Jack & Jill's Downhill Marathon & Half Half Marathon
- Trail
Scenery
- Juneteenth Half Marathon & 10K (Washington DC)
- Parkland, Mountain, Forest, Riverside, Waterfront, Historic, Moorland, City
- Jack & Jill's Downhill Marathon & Half Half Marathon
- Countryside, Historic, Parkland, Mountain, Forest, Lakeside
Atmosphere
- Juneteenth Half Marathon & 10K (Washington DC)
- Community, Festival, Charity
- Jack & Jill's Downhill Marathon & Half Half Marathon
- Destination, Scenic Tour, Wilderness
Technicality
- Juneteenth Half Marathon & 10K (Washington DC)
- Technical
- Jack & Jill's Downhill Marathon & Half Half Marathon
- Unavailable
Total ascent
- Juneteenth Half Marathon & 10K (Washington DC)
- 396 m
- Jack & Jill's Downhill Marathon & Half Half Marathon
- 311 m
Climbing density
- Juneteenth Half Marathon & 10K (Washington DC)
- 18.7 m/km
- Jack & Jill's Downhill Marathon & Half Half Marathon
- 14.7 m/km
Total descent
- Juneteenth Half Marathon & 10K (Washington DC)
- 398 m
- Jack & Jill's Downhill Marathon & Half Half Marathon
- 574 m
Net elevation
- Juneteenth Half Marathon & 10K (Washington DC)
- -2 m
- Jack & Jill's Downhill Marathon & Half Half Marathon
- -264 m
Max absolute grade
- Juneteenth Half Marathon & 10K (Washington DC)
- 16.0%
- Jack & Jill's Downhill Marathon & Half Half Marathon
- 31.2%
Flat grade share
- Juneteenth Half Marathon & 10K (Washington DC)
- 42.3%
- Jack & Jill's Downhill Marathon & Half Half Marathon
- 40.2%
GAP factor
- Juneteenth Half Marathon & 10K (Washington DC)
- 3.2%
- Jack & Jill's Downhill Marathon & Half Half Marathon
- -1.5%
Cutoff
- Juneteenth Half Marathon & 10K (Washington DC)
- Unavailable
- Jack & Jill's Downhill Marathon & Half Half Marathon
- 4:00:00
Entry model
- Juneteenth Half Marathon & 10K (Washington DC)
- Open
- Jack & Jill's Downhill Marathon & Half 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, Juneteenth Half Marathon & 10K (Washington DC) or Jack & Jill's Downhill Marathon & Half Half Marathon?
Jack & Jill's Downhill Marathon & Half Half Marathon has the lower GAP factor, making it the flatter course on our route model and more favourable on gradient alone.