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About RaceIndexOur methodologyData coverageCyclingTriathlon
  • Half Marathon
  • 21.1 km
  • Cambridge
  • Event dates –
  • Open entry

Cambridge Half Marathon + 5K at CambridgeSide (Cambridge, MA) Half Marathon

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 2.4% versus flat · net elevation 3 m

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

Decision summary

Cambridge Half Marathon + 5K at CambridgeSide (Cambridge, MA) Half Marathon at a glance

Route ascent
273 m

Lower than 23% of comparable mapped races

Typical conditions
84/100

Historical race-date favourability, not a forecast

Evidence depth
38 verified facts

Stored GPS route

Quick answers

What runners ask first

Cambridge Half Marathon + 5K at CambridgeSide (Cambridge, MA) route map

raceindex.org has a GPS course file for Cambridge Half Marathon + 5K at CambridgeSide (Cambridge, MA), 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 Cambridge Half Marathon + 5K at CambridgeSide (Cambridge, MA)?

The Cambridge Half Marathon + 5K at CambridgeSide (Cambridge, MA) route has 273 m of ascent, 270 m of descent and an estimated 2.4% grade-adjusted pace penalty versus a flat route.

Where does the Cambridge Half Marathon + 5K at CambridgeSide (Cambridge, MA) route go?

The Cambridge Half Marathon + 5K at CambridgeSide (Cambridge, MA) route starts at CambridgeSide, 100 CambridgeSide Place, Cambridge, MA 02141; half marathon starts at 7:00 a.m. on Sunday, November 1, 2026 and finishes back at CambridgeSide, 100 CambridgeSide Place, Cambridge, MA. Underfoot, expect paved city roads and riverfront paths, including Memorial Drive. It passes Charles River, Memorial Drive, MIT, John W. Weeks Footbridge and Harvard University Stadium. Fast, flat half marathon running along Memorial Drive beside the Charles River with views of the MIT and Harvard campuses, the John W.

What should runners know on race day for the Cambridge Half Marathon + 5K at CambridgeSide (Cambridge, MA)?

5. Complimentary pace groups provided via MyStryde TRAIN, ranging from 1:35 to 2:30 finish times. Two-day running festival pairing a Saturday 5K (Oct 31, 2026) with a Sunday half marathon (Nov 1, 2026).

Race character

Scenery

  • Riverside
  • City
  • Waterfront
  • Historic

Atmosphere

  • Charity
  • Big City
  • Community

Terrain

  • Road
Elevation character
Flat
Technicality
Non Technical

Entry, logistics and records

Records and field

Field size
Typical field of roughly 1,000-5,000 participants across the weekend.

Entry requirements

Entry status
Open entry: The held registration model is open entry and this edition is not marked sold out.
Qualification status
Open Registration road race with no qualifying standard; not run as a Boston Marathon qualifier.

Race day logistics

Aid stations
5
Pacers
Complimentary pace groups provided via MyStryde TRAIN, ranging from 1:35 to 2:30 finish times.
Medal
Finisher's medal awarded at the finish line.
Finisher tee
Registration includes a long-sleeve quarter-zip pullover (2026 color: Carolina Blue); all race swag must be collected during bib pickup before the race.

Access and course status

Start
CambridgeSide, 100 CambridgeSide Place, Cambridge, MA 02141; half marathon starts at 7:00 a.m. on Sunday, November 1, 2026.
Finish
Finishes back at CambridgeSide, 100 CambridgeSide Place, Cambridge, MA.
Certified course
USATF-certified 13.1-mile course.

Course facts

Surface
Paved city roads and riverfront paths, including Memorial Drive.
Landmarks
Charles River, Memorial Drive, MIT, John W. Weeks Footbridge, Harvard University Stadium, CambridgeSide
Notable features
  • Two-day running festival pairing a Saturday 5K (Oct 31, 2026) with a Sunday half marathon (Nov 1, 2026)
  • a Challenge entry option lets runners do both. Note: this is the Cambridge, Massachusetts race and is distinct from the unrelated TTP Cambridge Half Marathon in Cambridge, England
  • Beneficiary charities include Cambridge Camping, the City of Cambridge Scholarship Fund and many other local causes, with 66+ charity partners supported over the event's history
  • Fast, flat half marathon running along Memorial Drive beside the Charles River with views of the MIT and Harvard campuses, the John W. Weeks Footbridge and Harvard University Stadium. Five on-course water stops at approximately miles 2.25, 5, 7.25, 9.5, 11 and 12, with Gatorade at miles 2.25 and 11

How hilly is the Cambridge Half Marathon + 5K at CambridgeSide (Cambridge, MA) Half Marathon?

15%58%15%
  • Steep descent 6%
  • Descent 15%
  • Flat 58%
  • Climb 15%
  • Steep climb 6%
Total ascent
273 m
Net elevation
+3 m
GAP factor
2.4%
Longest climb
390 m at 5.5%
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?

  • 11°CTypical temperature
  • 23 kphTypical wind
  • 2 mmTypical rainfall
  • 84Favourability /100
Typical conditions for the race date and locality, within 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 Cambridge Half Marathon + 5K at CambridgeSide (Cambridge, MA) flat?

Its normalised GAP factor is 2.4% slower than a flat course, with about 273 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 →