Flat grade share
- Summer Breeze Half Marathon (San Leandro) 10K
- 100.0% Favoured
Dalmacija Ultra Trail 10K vs Summer Breeze Half Marathon (San Leandro) 10K
A data-led head-to-head using sourced race facts and available derived figures under one published methodology.
Data current as ofDalmacija Ultra Trail 10K or Summer Breeze Half Marathon (San Leandro) 10K — which comes out ahead?
Summer Breeze Half Marathon (San Leandro) 10K has the stronger available profile on flat grade share and conditions.
Route comparison snapshot
Dalmacija Ultra Trail 10K
- Mapped route
- Held
- Elevation profile
- Held
- course flatness
- Unavailable
- flat grade share
- 24.3%
- lower ascent
- 428 m
- climbing density
- 42.1 m/km
- net elevation
- 0 m
- maximum grade
- 48.6%
Summer Breeze Half Marathon (San Leandro) 10K
- Mapped route
- Held
- Elevation profile
- Held
- course flatness
- 0.0%
- flat grade share
- 100.0% Favoured
- lower ascent
- 0 m
- climbing density
- 0.0 m/km
- net elevation
- -0 m
- maximum grade
- 1.7%
| Metric | Dalmacija Ultra Trail 10K | Summer Breeze Half Marathon (San Leandro) 10K |
|---|---|---|
| Flat grade share | 24.3% | 100.0% ✓ |
| GAP factor (% slower than flat) | Unavailable | 0.0% |
| Uphill share | 31.2% | 0.0% |
| Steep-up share | 22.9% | 0.0% |
| Downhill share | 44.5% | 0.0% |
| Total ascent (m) | 428 m | 0 m |
| Climbing density (m/km) | 42.1 m/km | 0.0 m/km |
| Longest climb length (m) | 1,750 m | 640 m |
| Longest climb gain (m) | 284 m | 1 m |
| Longest climb average grade | 16.2% | 0.1% |
| Total descent (m) | 428 m | 0 m |
| Net elevation (m) | 0 m | -0 m |
| Max absolute grade | 48.6% | 1.7% |
| Start elevation (m) | 1 m | 2 m |
| Finish elevation (m) | 1 m | 2 m |
| Scenic score | 100/100 ✓ | 57/100 |
| Conditions | 64/100 | 73/100 ✓ |
GAP factor (% slower than flat)
- Dalmacija Ultra Trail 10K
- Unavailable
Uphill share
Steep-up share
Downhill share
Total ascent (m)
Climbing density (m/km)
- Dalmacija Ultra Trail 10K
- 42.1 m/km
Longest climb length (m)
- Dalmacija Ultra Trail 10K
- 1,750 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
- Dalmacija Ultra Trail 10K
- 100/100 Favoured
Conditions
- Summer Breeze Half Marathon (San Leandro) 10K
- 73/100 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 | Dalmacija Ultra Trail 10K | Summer Breeze Half Marathon (San Leandro) 10K |
|---|---|---|
| Schedule | Exact race date not confirmed. Event weekend starts 2026-10-09 (legacy event-level date). | Exact race date not confirmed. Event weekend starts 2026-08-01 (legacy event-level date). |
| Location | Omiš, Croatia | San Leandro, California |
| Actual distance | 10.2 km | 10 km |
| raceindex.org mapped route held | Held | Held |
| raceindex.org elevation profile held | Held | Held |
| Course type | Point To Point | Out And Back |
| Surface | Mountain trail and rocky coastal paths | Paved bayside trail (Marina Bay Trail / San Leandro Marina shoreline path). |
| Elevation character | Hilly | Unavailable |
| Terrain | Beach, Trail | Trail |
| Scenery | Coastal, Riverside, City, Mountain, Forest, Canyon, Historic, Island, Waterfront | Coastal, Waterfront, Parkland |
| Atmosphere | Destination, Scenic Tour, Wilderness | Community, Scenic Tour |
| Total ascent | 428 m | 0 m |
| Climbing density | 42.1 m/km | 0.0 m/km |
| Total descent | 428 m | 0 m |
| Net elevation | 0 m | -0 m |
| Max absolute grade | 48.6% | 1.7% |
| Flat grade share | 24.3% | 100.0% |
| GAP factor | Unavailable | 0.0% |
| Cutoff | 4:00:00 | Unavailable |
| Entry model | Open | Open |
Schedule
- Dalmacija Ultra Trail 10K
Exact race date not confirmed. Event weekend starts 2026-10-09 (legacy event-level date).
- Summer Breeze Half Marathon (San Leandro) 10K
Exact race date not confirmed. Event weekend starts 2026-08-01 (legacy event-level date).
Location
- Dalmacija Ultra Trail 10K
- Omiš, Croatia
- Summer Breeze Half Marathon (San Leandro) 10K
- San Leandro, California
Actual distance
- Dalmacija Ultra Trail 10K
- 10.2 km
- Summer Breeze Half Marathon (San Leandro) 10K
- 10 km
raceindex.org mapped route held
- Dalmacija Ultra Trail 10K
- Held
- Summer Breeze Half Marathon (San Leandro) 10K
- Held
raceindex.org elevation profile held
- Dalmacija Ultra Trail 10K
- Held
- Summer Breeze Half Marathon (San Leandro) 10K
- Held
Course type
- Dalmacija Ultra Trail 10K
- Point To Point
- Summer Breeze Half Marathon (San Leandro) 10K
- Out And Back
Surface
- Dalmacija Ultra Trail 10K
- Mountain trail and rocky coastal paths
- Summer Breeze Half Marathon (San Leandro) 10K
- Paved bayside trail (Marina Bay Trail / San Leandro Marina shoreline path).
Elevation character
- Dalmacija Ultra Trail 10K
- Hilly
- Summer Breeze Half Marathon (San Leandro) 10K
- Unavailable
Terrain
- Dalmacija Ultra Trail 10K
- Beach, Trail
- Summer Breeze Half Marathon (San Leandro) 10K
- Trail
Scenery
- Dalmacija Ultra Trail 10K
- Coastal, Riverside, City, Mountain, Forest, Canyon, Historic, Island, Waterfront
- Summer Breeze Half Marathon (San Leandro) 10K
- Coastal, Waterfront, Parkland
Atmosphere
- Dalmacija Ultra Trail 10K
- Destination, Scenic Tour, Wilderness
- Summer Breeze Half Marathon (San Leandro) 10K
- Community, Scenic Tour
Total ascent
- Dalmacija Ultra Trail 10K
- 428 m
- Summer Breeze Half Marathon (San Leandro) 10K
- 0 m
Climbing density
- Dalmacija Ultra Trail 10K
- 42.1 m/km
- Summer Breeze Half Marathon (San Leandro) 10K
- 0.0 m/km
Total descent
- Dalmacija Ultra Trail 10K
- 428 m
- Summer Breeze Half Marathon (San Leandro) 10K
- 0 m
Net elevation
- Dalmacija Ultra Trail 10K
- 0 m
- Summer Breeze Half Marathon (San Leandro) 10K
- -0 m
Max absolute grade
- Dalmacija Ultra Trail 10K
- 48.6%
- Summer Breeze Half Marathon (San Leandro) 10K
- 1.7%
Flat grade share
- Dalmacija Ultra Trail 10K
- 24.3%
- Summer Breeze Half Marathon (San Leandro) 10K
- 100.0%
GAP factor
- Dalmacija Ultra Trail 10K
- Unavailable
- Summer Breeze Half Marathon (San Leandro) 10K
- 0.0%
Cutoff
- Dalmacija Ultra Trail 10K
- 4:00:00
- Summer Breeze Half Marathon (San Leandro) 10K
- Unavailable
Entry model
- Dalmacija Ultra Trail 10K
- Open
- Summer Breeze Half Marathon (San Leandro) 10K
- Open
Facts are shown only when they exist in the sourced race record; Not held means no sourced value is held for that race.