TSF 5K for Rare Neuroimmune Disorders
TSF 5K for Rare Neuroimmune Disorders is a running race on September 13, 2026 in Weston, MA, with an entry fee of $25.
- Date
- September 13, 2026 (52 days to go)
- Location
- 11 Town House Rd, Weston, MA
- Price
- $25
- Sport
- Running
From the Organizer
After suddenly losing vision and feeling in her body, Sumaira was diagnosed with neuromyelitis optica (NMO), a rare autoimmune disease that affects the central nervous system resulting in vision loss and paralysis. Two months after her diagnosis, she started The Sumaira Foundation (TSF), a now global nonprofit organization dedicated to raising awareness of rare neuroimmune disorders, building communities of support for patients and their caregivers, funding research and advocating on behalf of patients. TSF is proud to be patient-led, patient-powered, science-driven and therapy-agnostic. The organization is proud to call 102 patients, caregivers and clinicians TSF Ambassadors representing 35 countries.
A Personal Message from Teresa Clark (TSF Ambassador):
"As many of you may know, almost three years ago, in May 2022, I was diagnosed with a rare autoimmune disease called NMO - Neuromyelitis Optica.
This 5k has been something I've wanted to do for years now, so I'm excited to finally begin this annual race to raise awareness.
Early detection of NMO improves quality of life!" Read more on Terry's Story Here: https://www.sumairafoundation.org/terrys-nmo-story-the-perfect-storm/
Since 2018, TSF has funded $1m in rare neuroimmune disorder research, fellowship and journal publications as a result of grassroot fundraising. The aim of the 5K is to raise enough funds to support 2 additional research projects in 2025 through the Foundation’s SPARK and Unicorn grants. Explore TSF's research portfolio: https://www.sumairafoundation.org/tsf-funded-research/
Events
Weather
Typical Conditions
It's too far out for a forecast, so here's what weather on this date is normally like in the area. A race day forecast will replace this as race week approaches.
Typical High
74°
Typical Low
53°
Chance of Rain
31%
Based on US Climate Normals data from Natick, 6 mi from the venue.
Host City
About Weston, MA
City Elevation
262 ft
Nearest Airport
BOS
Boston Logan International Airport · 15 mi
Time Zone
Eastern Time
From Endurance Grid
Line up lodging and travel early to lock in your race weekend.
Race Location
Your Next Start Line
What Are You
Waiting For?
Every finish line starts with a single decision. Claim your spot at TSF 5K for Rare Neuroimmune Disorders, put it on the calendar, and turn “someday” into a start date.
52
Days to train
- Race
- TSF 5K for Rare Neuroimmune Disorders
- Date
- September 13, 2026
- Location
- 11 Town House Rd, Weston, MA
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From Endurance Grid
About This Sport
Endurance Grid is here to help you understand the sport, decide if it’s the right fit, and learn how to prepare. For course distances, logistics, and race-day specifics, always defer to the race organizer’s event page.
With running, there's a distance for every fitness level, a community at every start line, and nothing beats the feeling of crossing a finish line you trained for.
Running is an endurance sport that rewards consistency, and showing up every week compounds in ways that will surprise you.
Running
From 5K to marathon, running races are an accessible entry point into endurance sport. There's a distance for every fitness level and a community at every start line.
Coming Up
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Plan your trip
Make it a Racecation
Coming from out of town? There's more to Weston than race day. We'll help you line up nearby lodging, flights, a rental car, and things to do so you can make the most of your racecation.
Plan your trip to WestonFrequently Asked Questions (FAQs)
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TSF 5K for Rare Neuroimmune Disorders
Sep 13, 2026