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