In 196 days · Sat, Apr 17, 2027
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Saturday, April 17th, 2027
Merri-Mac Park, London OH
Marathon · Half · 5K
43–63°F · some rain risk
See last 10 years
On this date: rain 2 of the last 10 years
2026
53–81°F
dry
2025
32–62°F
dry
2024
60–76°F
rain
2023
39–45°F
dry
2022
29–48°F
dry
2021
36–57°F
dry
2020
35–49°F
rain
2019
53–70°F
dry
2018
31–40°F
dry
2017
52–66°F
dry
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About this race
Event Overview
We are passionate about helping you meet your race day goals, and raising funds to build play equipment for kids on London’s south side. Whether it’s a BQ, a PR, or your first attempt at a marathon or half marathon, our insanely flat, straight, sheltered course is ideal!
When you’re done you can go home wearing one of the most beautiful medals you’ve ever seen, and tell all your friends about running LONDON!
All funds raised from our race go directly to building play equipment, refurbishing sports fields, and improving MerriMac Park! Literally, every cent raised!
Format
- Start Times: The full and half marathon race events will start promptly at 7 am and the 5K at 7:15 am.
- Course Duration: The course will remain open for 5 hours after the last competitor starts.
Course Details
- Location: The start and finish will be located at Merri-Mac Park. All course maps can be viewed here.
- Scenery: The flat, tree-lined scenic rails will take you toward Darby Creek Metro Park.
- Repetition: The full marathon repeats the course twice.
- Goal Achievement: 84 % of runners in 2026 said that they met their race goals, 35 % PRed, and 28 % of marathoners BQed!!!
Aid Stations
- Location: Aid stations and port-o-johns are spaced at every 2-2.5 miles along the course.
- Provision: Aid stations are stocked with water, Gatorade, and GU gels.
- Facilities: We are adding port-o-johns to every aid station in 2027.
Certification
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
- Half Marathon Runners: 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.
- Full Marathon Runners: Receive a full-zip London OH Marathon lightweight hooded sweatshirt, a finisher medal, and swag from local businesses.
Packet Pickup and Expo
- Date: Packet Pickup will be from 4-8 pm on Friday, April 16th, location TBD.
- Race Day Pickup: 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!
Parking
There is plenty of convenient parking within 100m of the start / finish line. On race morning, enter the park Via Jenkinson Dr Ave. (by the playground)
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 16, 2027, 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
Course map
Train with a club
Run clubs near London to train with before race day.
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