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About RaceIndexOur methodologyData coverageCyclingTriathlon
  • 10K
  • 10 km
  • San Leandro
  • Event weekend starts
  • Past event

Summer Breeze Half Marathon (San Leandro) 10K

This race edition

Race date
Date not confirmed for this distance
Race timezone
Timezone not confirmed
Edition status
Status not confirmed

Entry options

2026 edition

Entry options are not yet confirmed for this edition. Check the organiser before making plans.

Modelled energy-cost change 0.0% versus flat · net elevation -0 m

View verified GPS mapOfficial event website ↗
Plan my trainingPlan my paceData current as of

Decision summary

Summer Breeze Half Marathon (San Leandro) 10K at a glance

Route ascent
0 m

Lower than 100% of comparable mapped races

Typical conditions
73/100

Historical race-date favourability, not a forecast

Evidence depth
28 verified facts

Stored GPS route

Quick answers

What runners ask first

Summer Breeze Half Marathon (San Leandro) 10K route map

raceindex.org has a GPS course file for Summer Breeze Half Marathon (San Leandro) 10K, so runners can inspect the route line on the map. Elevation charts and ascent figures appear only when that file includes usable elevation data.

How hilly is the Summer Breeze Half Marathon (San Leandro) 10K?

The Summer Breeze Half Marathon (San Leandro) 10K route has 0 m of ascent, 0 m of descent and an estimated 0.0% grade-adjusted pace penalty versus a flat route.

Where does the Summer Breeze Half Marathon (San Leandro) 10K route go?

The Summer Breeze Half Marathon (San Leandro) 10K route starts at San Leandro Marina Park, 14001 Monarch Bay Drive, San Leandro, CA and finishes at San Leandro Marina Park (start/finish at the marina). Underfoot, expect paved bayside trail (Marina Bay Trail / San Leandro Marina shoreline path). It passes San Leandro Marina, San Francisco Bay shoreline and Marina Bay Trail. Flat, easy bayside trail that rarely strays more than a few feet from water.

What should runners know on race day for the Summer Breeze Half Marathon (San Leandro) 10K?

Pace groups offered for the half marathon at 1:30, 1:40, 1:50, 2:00, 2:10, 2:20, 2:30, 2:40, 2:50 and 3:00 (Pay it Forward Pace Team).

Race character

Scenery

  • Coastal
  • Waterfront
  • Parkland

Atmosphere

  • Community
  • Scenic Tour

Terrain

  • Trail

Entry, logistics and records

Records and field

Men's course record
32:06 (Isaac Gensel)
Women's course record
38:17 (Lisa Gillis)

Entry requirements

Entry status
Past event: The listed edition date has passed.

Race day logistics

Pacers
Pace groups offered for the half marathon at 1:30, 1:40, 1:50, 2:00, 2:10, 2:20, 2:30, 2:40, 2:50 and 3:00 (Pay it Forward Pace Team).
Medal
Finisher medal plus custom age group medals awarded.

Access and course status

Start
San Leandro Marina Park, 14001 Monarch Bay Drive, San Leandro, CA
Finish
San Leandro Marina Park (start/finish at the marina).

Course facts

Course type
Out And Back
Surface
Paved bayside trail (Marina Bay Trail / San Leandro Marina shoreline path).
Landmarks
San Leandro Marina, San Francisco Bay shoreline, Marina Bay Trail
Notable features
  • Flat, easy bayside trail that rarely strays more than a few feet from water
  • great bay views with a gentle breeze
  • hikers/walkers always welcome

How hilly is the Summer Breeze Half Marathon (San Leandro) 10K?

100%
  • Flat 100%
Total ascent
0 m
Net elevation
−0 m
GAP factor
0.0%
Longest climb
640 m at 0.1%
Gradient mix and ascent are derived from the course geometry under our published normalisation, not taken from organiser marketing.

What are typical race-day conditions?

  • 17°CTypical temperature
  • 19 kphTypical wind
  • 0 mmTypical rainfall
  • 73Favourability /100
Typical conditions for the race date and locality, warmer than the endurance-optimal window. These are climatological norms, not a forecast, and are shared across every distance at this event.

More race details

Is the Summer Breeze Half Marathon (San Leandro) 10K flat?

Its normalised GAP factor is 0.0% slower than a flat course, with about 0 m of total ascent.

How we calculated this

Published facts and derived model outputs on this page are tied to stored sources or a published, version-locked methodology. We show the provenance so runners, coaches and organisers can check it. Data on this page is current as of .

Derived numbers use scoring-methodology-v1.0.

Sources used on this page (3)

Read the full methodology →

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