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About RaceIndexOur methodologyData coverageCyclingTriathlon
  • Half Marathon
  • 21.1 km
  • Duluth
  • Event weekend starts
  • Open entry

Grandma's Marathon 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

2027 edition

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

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

Decision summary

Grandma's Marathon Half Marathon at a glance

Cut-off average pace
8:32/km

3:00:00 total limit divided by distance. Check gun/chip timing and intermediate limits; allow time for stops.

Typical conditions
61/100

Historical race-date favourability, not a forecast

Evidence depth
18 verified facts

Stored GPS route

Quick answers

What runners ask first

Grandma's Marathon Half Marathon route map

raceindex.org has a GPS course file for Grandma's Marathon Half Marathon, so runners can inspect the route line on the map. Elevation charts and ascent figures appear only when that file includes usable elevation data.

Where does the Grandma's Marathon Half Marathon route go?

The Grandma's Marathon Half Marathon route finishes at Historic Canal Park, downtown Duluth, MN. The setting includes coastal and lakeside.

What should runners know on race day for the Grandma's Marathon Half Marathon?

Pace teams for marathon and half marathon (no pacers for the 5K).

Race character

Scenery

  • Coastal
  • Lakeside
  • Riverside
  • Waterfront
  • City
  • Parkland
  • Forest
  • Historic

Atmosphere

  • Destination
  • Festival
  • Scenic Tour

Entry, logistics and records

Records and field

Field cap
7,000

Entry requirements

Entry status
Open entry: The held registration model is open entry and this edition is not marked sold out.
Cut-off
3:00:00

Race day logistics

Pacers
Pace teams for marathon and half marathon (no pacers for the 5K).
Expo / packet pickup
Essentia Health Fitness Expo at the Duluth Entertainment Convention Center (DECC); 100+ vendors; packet pickup race weekend.

Access and course status

Finish
Historic Canal Park, downtown Duluth, MN

Course facts

Course type
Point To Point

What are typical race-day conditions?

  • 18°CTypical temperature
  • 20 kphTypical wind
  • 3 mmTypical rainfall
  • 61Favourability /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.

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 (2)

Read the full methodology →