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London OH Marathon

Sat, Apr 11, 2026, 7:00 AM EDT

Location
London, OH
Merri-Mac Park, 43140
Open in Maps
Type
RUN
Official registration

Sign up and verify details on the organizer’s official page.

At a glance

Run a "crazy flat," USATF-certified course for a PR or BQ, all while supporting Merri-Mac Park improvements.

  • Scenic
  • Competitive
  • For a Cause

Who it's for

  • For a Cause

Great for: cause-driven runners, runners who like a competitive edge

Less ideal for: walkers-only pacing

The 6th Annual London OH Marathon is a dedicated fundraiser supporting improvements for Merri-Mac Park, including new play equipment and recreational paths. Runners will experience a "crazy flat," USATF-certified course along tree-lined rails towards Darby Creek Metro Park. This event is ideal for those aiming for a personal record or Boston Marathon qualifying time, with special recognition for elite athletes. Aid stations are well-spaced, offering water, Gatorade, and GU gels.

What to expect

  • A "crazy flat," USATF-certified course designed for personal bests and BQ attempts.
  • Aid stations every 2-2.5 miles with water, Gatorade, and GU gels.
  • Full marathoners receive a hooded sweatshirt and medal; half marathoners get a vintage-style shirt and medal.

Standout details

  • Fundraiser for Merri-Mac Park
  • "Crazy flat" USATF-certified course
  • Ideal for PR or BQ attempts
  • Elite athlete program with VIP accommodations

Perks & features

  • Medal
  • Shirt

From the public listing — confirm on the official site.

Auto-drafted from the public listing — confirm details on the official event page before signing up.

Distances & registration

5 options

Registration for all distances is through the official signup link above.

  • 5K

    Sat, Apr 11, 7:15 AM EDT · From $28.30

    Opens Jun 12, 2025, 8:00 PM EDT · Closes Sep 30, 2025, 7:59 PM EDT

  • 13.1 Miles

    Sat, Apr 11, 7:00 AM EDT · From $54.80

    Opens Jun 12, 2025, 8:00 PM EDT · Closes Sep 30, 2025, 7:59 PM EDT

  • 13.1 Miles

    Sat, Apr 11, 7:00 AM EDT · From $54.80

    Opens Jun 12, 2025, 8:00 PM EDT · Closes Sep 30, 2025, 7:59 PM EDT

+ 2 more options
  • 26.2 Miles

    Sat, Apr 11, 7:00 AM EDT · From $65.40

    Opens Jun 12, 2025, 8:00 PM EDT · Closes Sep 30, 2025, 7:59 PM EDT

  • 26.2 Miles

    Sat, Apr 11, 7:00 AM EDT · From $65.40

    Opens Jun 12, 2025, 8:00 PM EDT · Closes Sep 30, 2025, 7:59 PM EDT

The course

  • Rolling
  • Timed race

Vibe Check

Steady Effort

longer distance

marathon distance, rolling area, typically mild weather

  • Rolling area

Based on typical seasonal and area patterns — not a course map or official forecast.

From the organizer

The Merrimac Miracle Organization is pleased to host the 6th Annual London OH Marathon as a fundraiser for Merri-Mac Park. We are raising funds to further improve the park by adding play equipment, recreational paths, sports fields, etc.

Format: The full and half marathon race events will start promptly at 7 am and the 5K at 7:15 am. The course will remain open for 5 hours after the last competitor starts.

Course: The start and finish will be located at Merri-Mac Park. All course maps can be viewed here. The flat, tree-lined scenic rails will take you toward Darby Creek Metro Park. The full marathon repeats the course twice. Did we mention this race is flat? It is crazy flat!

Aid stations and port-o-johns are spaced at every 2-2.5 miles along the course. Aid stations are stocked with water, Gatorade, and GU gels.

Both the marathon and half-marathon courses are USATF certified! This course is perfect for that PR or BQ attempt! YES!

London OH Marathon: OH25006JHP

London OH Half Marathon: OH25005JHP

Perks: All half marathon runners will receive a high-quality soft vintage style race shirt with the London OH Marathon logo, a finisher medal, and special promotional offers from local businesses. All full marathon runners will receive a full-zip London OH Marathon lightweight hooded sweatshirt, a finisher medal, and swag from local businesses.

All runners who BQ at the 2026 London OH Marathon will receive a free nontransferable race entry to any of our 2027 races!

Packet Pick up and event expo:

2026 Packet Pickup details are TBD, we will finalize these details in the weeks prior to the event and be sure all registered participants are notified.

There will be race day packet pick up. At Merri Mac Park starting at 6:15 AM. Be sure to arrive early if you need to pick up your packet on race day!

Elite athletes: This course is going to be crazy fast, and we’re looking for people who can light it up. Please contact Race Director David Mars at  davidtmars@gmail.com for details. Elite entries will include a complimentary entry to the race and VIP accommodations on race day.

Elite Standards:

Male - 16:00 (5k), 33:30 (10k), 1:15:00 (1/2 marathon), 2:40:00 (marathon) Female - 19:00 (5k), 38:30 (10k), 1:28:00 (1/2 marathon), 3:00:00 (marathon) Event transfer: through April 10, 2026, if you need to change your event, you can do so by following these instructions: https://help.runsignup.com/support/solutions/articles/17000062922-transfer-to-another-event

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