Flat grade share
- Summer Breeze Half Marathon (San Leandro) 5K
- Unavailable
Summer Breeze Half Marathon (San Leandro) 10K vs Summer Breeze Half Marathon (San Leandro) 5K
A data-led head-to-head using sourced race facts and available derived figures under one published methodology.
Data current as ofSummer Breeze Half Marathon (San Leandro) 10K or Summer Breeze Half Marathon (San Leandro) 5K — which comes out ahead?
The available sourced metrics do not create a clear lead; use the table to compare the held route, cost and race-day evidence.
Route comparison snapshot
Summer Breeze Half Marathon (San Leandro) 10K
- Mapped route
- Held
- Elevation profile
- Held Favoured
- course flatness
- 0.0%
- flat grade share
- 100.0%
- lower ascent
- 0 m
- climbing density
- 0.0 m/km
- net elevation
- -0 m
- maximum grade
- 1.7%
Summer Breeze Half Marathon (San Leandro) 5K
- Mapped route
- Held
- Elevation profile
- Not held
- course flatness
- Unavailable
- flat grade share
- Unavailable
- lower ascent
- Unavailable
- climbing density
- Unavailable
- net elevation
- Unavailable
- maximum grade
- Unavailable
| Metric | Summer Breeze Half Marathon (San Leandro) 10K | Summer Breeze Half Marathon (San Leandro) 5K |
|---|---|---|
| Flat grade share | 100.0% | Unavailable |
| GAP factor (% slower than flat) | 0.0% | Unavailable |
| Uphill share | 0.0% | Unavailable |
| Steep-up share | 0.0% | Unavailable |
| Downhill share | 0.0% | Unavailable |
| Total ascent (m) | 0 m | Unavailable |
| Climbing density (m/km) | 0.0 m/km | Unavailable |
| Longest climb length (m) | 640 m | Unavailable |
| Longest climb gain (m) | 1 m | Unavailable |
| Longest climb average grade | 0.1% | Unavailable |
| Total descent (m) | 0 m | Unavailable |
| Net elevation (m) | -0 m | Unavailable |
| Max absolute grade | 1.7% | Unavailable |
| Start elevation (m) | 2 m | Unavailable |
| Finish elevation (m) | 2 m | Unavailable |
| Scenic score | 57/100 | 57/100 |
| Conditions | 73/100 | 73/100 |
GAP factor (% slower than flat)
- Summer Breeze Half Marathon (San Leandro) 5K
- Unavailable
Uphill share
- Summer Breeze Half Marathon (San Leandro) 5K
- Unavailable
Steep-up share
- Summer Breeze Half Marathon (San Leandro) 5K
- Unavailable
Downhill share
- Summer Breeze Half Marathon (San Leandro) 5K
- Unavailable
Total ascent (m)
- Summer Breeze Half Marathon (San Leandro) 5K
- Unavailable
Climbing density (m/km)
- Summer Breeze Half Marathon (San Leandro) 5K
- Unavailable
Longest climb length (m)
- Summer Breeze Half Marathon (San Leandro) 5K
- Unavailable
Longest climb gain (m)
- Summer Breeze Half Marathon (San Leandro) 5K
- Unavailable
Longest climb average grade
- Summer Breeze Half Marathon (San Leandro) 5K
- Unavailable
Total descent (m)
- Summer Breeze Half Marathon (San Leandro) 5K
- Unavailable
Net elevation (m)
- Summer Breeze Half Marathon (San Leandro) 5K
- Unavailable
Max absolute grade
- Summer Breeze Half Marathon (San Leandro) 5K
- Unavailable
Start elevation (m)
- Summer Breeze Half Marathon (San Leandro) 5K
- Unavailable
Finish elevation (m)
- Summer Breeze Half Marathon (San Leandro) 5K
- Unavailable
Scenic score
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 | Summer Breeze Half Marathon (San Leandro) 10K | Summer Breeze Half Marathon (San Leandro) 5K |
|---|---|---|
| Schedule | Exact race date not confirmed. Event weekend starts 2026-08-01 (legacy event-level date). | Exact race date not confirmed. Event weekend starts 2026-08-01 (legacy event-level date). |
| Location | San Leandro, California | San Leandro, California |
| Actual distance | 10 km | 5 km |
| raceindex.org mapped route held | Held | Held |
| raceindex.org elevation profile held | Held | Not held |
| Course type | Out And Back | Out And Back |
| Surface | Paved bayside trail (Marina Bay Trail / San Leandro Marina shoreline path). | Paved bayside trail (Marina Bay Trail / San Leandro Marina shoreline path). |
| Terrain | Trail | Trail |
| Scenery | Coastal, Waterfront, Parkland | Coastal, Waterfront, Parkland |
| Atmosphere | Community, Scenic Tour | Community, Scenic Tour |
| Total ascent | 0 m | Unavailable |
| Climbing density | 0.0 m/km | Unavailable |
| Total descent | 0 m | Unavailable |
| Net elevation | -0 m | Unavailable |
| Max absolute grade | 1.7% | Unavailable |
| Flat grade share | 100.0% | Unavailable |
| GAP factor | 0.0% | Unavailable |
| Entry model | Open | Open |
Schedule
- Summer Breeze Half Marathon (San Leandro) 10K
Exact race date not confirmed. Event weekend starts 2026-08-01 (legacy event-level date).
- Summer Breeze Half Marathon (San Leandro) 5K
Exact race date not confirmed. Event weekend starts 2026-08-01 (legacy event-level date).
Location
- Summer Breeze Half Marathon (San Leandro) 10K
- San Leandro, California
- Summer Breeze Half Marathon (San Leandro) 5K
- San Leandro, California
Actual distance
- Summer Breeze Half Marathon (San Leandro) 10K
- 10 km
- Summer Breeze Half Marathon (San Leandro) 5K
- 5 km
raceindex.org mapped route held
- Summer Breeze Half Marathon (San Leandro) 10K
- Held
- Summer Breeze Half Marathon (San Leandro) 5K
- Held
raceindex.org elevation profile held
- Summer Breeze Half Marathon (San Leandro) 10K
- Held
- Summer Breeze Half Marathon (San Leandro) 5K
- Not held
Course type
- Summer Breeze Half Marathon (San Leandro) 10K
- Out And Back
- Summer Breeze Half Marathon (San Leandro) 5K
- Out And Back
Surface
- Summer Breeze Half Marathon (San Leandro) 10K
- Paved bayside trail (Marina Bay Trail / San Leandro Marina shoreline path).
- Summer Breeze Half Marathon (San Leandro) 5K
- Paved bayside trail (Marina Bay Trail / San Leandro Marina shoreline path).
Terrain
- Summer Breeze Half Marathon (San Leandro) 10K
- Trail
- Summer Breeze Half Marathon (San Leandro) 5K
- Trail
Scenery
- Summer Breeze Half Marathon (San Leandro) 10K
- Coastal, Waterfront, Parkland
- Summer Breeze Half Marathon (San Leandro) 5K
- Coastal, Waterfront, Parkland
Atmosphere
- Summer Breeze Half Marathon (San Leandro) 10K
- Community, Scenic Tour
- Summer Breeze Half Marathon (San Leandro) 5K
- Community, Scenic Tour
Total ascent
- Summer Breeze Half Marathon (San Leandro) 10K
- 0 m
- Summer Breeze Half Marathon (San Leandro) 5K
- Unavailable
Climbing density
- Summer Breeze Half Marathon (San Leandro) 10K
- 0.0 m/km
- Summer Breeze Half Marathon (San Leandro) 5K
- Unavailable
Total descent
- Summer Breeze Half Marathon (San Leandro) 10K
- 0 m
- Summer Breeze Half Marathon (San Leandro) 5K
- Unavailable
Net elevation
- Summer Breeze Half Marathon (San Leandro) 10K
- -0 m
- Summer Breeze Half Marathon (San Leandro) 5K
- Unavailable
Max absolute grade
- Summer Breeze Half Marathon (San Leandro) 10K
- 1.7%
- Summer Breeze Half Marathon (San Leandro) 5K
- Unavailable
Flat grade share
- Summer Breeze Half Marathon (San Leandro) 10K
- 100.0%
- Summer Breeze Half Marathon (San Leandro) 5K
- Unavailable
GAP factor
- Summer Breeze Half Marathon (San Leandro) 10K
- 0.0%
- Summer Breeze Half Marathon (San Leandro) 5K
- Unavailable
Entry model
- Summer Breeze Half Marathon (San Leandro) 10K
- Open
- Summer Breeze Half Marathon (San Leandro) 5K
- Open
Facts are shown only when they exist in the sourced race record; Not held means no sourced value is held for that race.