Dewey Decimal Dash ~ 5K & Fun Run/Walk 2026
- Date
- Saturday, November 7, 2026
- Start time
- 8:00 AM start (New York)
- Location
- Havertown, Pennsylvania
- Entry fee
- From $25 · goes up to $40 on Oct 31, 2026
- Included with entry
- Includes a shirt
- Fundraising
- Takes optional donations when you register
Registration is open.
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Official race websiteAdd to calendar: Apple or Outlook · Google
Events and entry fees
| Event | Distance | When | Entry fee | Cap |
|---|---|---|---|---|
| 5K Run/Walk | 5K | Nov 7, 20268:00 AM | $35$40 after Oct 31, 2026 | – |
| 1 Mile Run/Walk | 1 Mile | Nov 7, 20268:05 AM | $25$30 after Oct 31, 2026 | – |
Entry fees exclude processing fees. Prices and dates come from the race's registration page and refresh nightly.
The 5K fee goes up to $40 on Oct 31, 2026.
Race day planning
Entry fee schedule
- 5K Run/Walk: $35 until Oct 30, then $40 until Nov 6, then $45 until Nov 7.
- 1 Mile Run/Walk: $25 until Oct 30, then $30 until Nov 6, then $35 until Nov 7.
Online registration closes Nov 7, 2026, unless the race fills first.
How the price compares
At $35, entry is about 17 percent above a typical 5K in Pennsylvania, which costs $30 right now.
What a typical finish looks like
A typical finisher at a 5K in Havertown runs 27:53, about 8:58 a mile, based on 6 races with published results. Women typically finish in 30:02 and men in 26:54.
Light and altitude
Sunrise on race morning is at about 6:36 AM, and the 5K Run/Walk starts at 8:00 AM. The start sits about 290 feet above sea level.
Fees exclude processing fees. Comparisons use current entry fees and published results from races nearby.
Start location and course
1601 Darby Road, Havertown, PA 19083
The pin marks the address the race lists, which is usually the start. The organizers have not shared a course map with us yet.
2025 results
All results (5 years)Aggregated from official results (Bryn Mawr Racing Company) for Dewey Decimal Dash ~ 5K & Fun Run/Walk. Individual finisher names are not stored here.
How fast do you need to be at Dewey Decimal Dash ~ 5K & Fun Run/Walk?
In 2025, the fastest tenth finished in 22:58 or better, the top quarter in 25:37, and half the field in 27:52; the last tenth came in after 38:01.
| Age | Women | Men |
|---|---|---|
| Under 20 | n/a | 23:07 |
| 30-39 | 25:36 | 21:13 |
| 40-49 | 24:36 | 26:01 |
| 50-59 | 26:46 | 23:23 |
| 60-69 | 26:10 | 26:07 |
Groups with fewer than five finishers are left out. Awards vary by race; check the race's rules.
What would my time get me?
Where a finish time would have placed in 2025.
Finishers by year
About the same size since 2021.
All events combined, from official results.
Dewey Decimal Dash ~ 5K & Fun Run/Walk 5K year by year
From 2021 to 2025, the field went from 128 to 125 finishers, and the median time dropped from 28:17 to 27:52.
| Year | Finishers | Median | Fastest tenth | Winner |
|---|---|---|---|---|
| 2025 | 125 (-5%) | 27:52 | under 22:58 | 17:47 |
| 2024 | 132 (+59%) | 28:55 | under 23:07 | 18:44 |
| 2023 | 83 (-25%) | 30:26 | under 23:51 | 18:29 |
| 2022 | 110 (-14%) | 29:46 | under 23:59 | 18:14 |
| 2021 | 128 | 28:17 | under 22:51 | 18:14 |
From each year's official results for the 5K; virtual options are left out.
How fast is it?
Faster than most Pennsylvania 5Ks
The fastest quarter of the 2025 5K field finished under 25:37, against 27:10 in a typical Pennsylvania 5K, so times here run 6 percent faster.
Compares the fastest quarter of each field, so walkers and first-timers do not skew it. It reflects the course and the field together: a flat course, cool weather, or a competitive crowd all make times faster.
Typical race-day weather
Around November 7 the day usually runs from 41°F at dawn to 58°F in the afternoon, with measurable rain on about 19% of days. Cold snaps dip to 34°F and hot years reach 70°F.
Based on 70 days within a week of the date over the last 5 years, from historical weather for the start area. Not a forecast.
Race details
- Where
- 1601 Darby Road, Havertown, PA 19083Map
- Course
- Road
- Start elevation
- About 290 feet
- Included with entry
- Dewey Decimal Dash Tee Shirt
- Donations
- Accepted when you register
- Distances
- 1 Mile, 5K
- Editions
- 2026 (Nov 7, 2026), 2025 (Nov 1, 2025), 2024 (Nov 2, 2024), 2023 (Nov 4, 2023), 2022 (Nov 5, 2022), 2021 (Nov 6, 2021)
Organize this race? Add details or a correction
Plan your race
Quick answers
- When is Dewey Decimal Dash ~ 5K & Fun Run/Walk?
- Saturday, November 7, 2026, starting at 8:00 AM.
- How much does it cost?
- Entry starts at $25 before processing fees, and rises to $40 on Oct 31, 2026.
- When does registration close?
- Online registration closes Nov 7, 2026, unless the race fills first.
- Is the entry fee high for Pennsylvania?
- At $35, entry is about 17 percent above a typical 5K in Pennsylvania, which costs $30 right now.
- Do runners get a shirt or medal?
- Entry includes a shirt, according to the race's registration page. Check it for sizes and whether kids' races get the same.
- Can I donate to a cause when I register?
- Yes. The registration form offers an optional donation, usually for the charity or nonprofit the race supports. The race's own page names the cause.
- What distances can I run?
- 1 Mile, 5K.
- How big is it, and how fast?
- In 2025, 125 runners finished the 5K LIVE EVENT; the median finish was 27:52 and the winner ran 17:47.
- Is it a fast course?
- The fastest quarter of the 2025 5K field finished under 25:37, against 27:10 in a typical Pennsylvania 5K, so times here run 6 percent faster.
- Where does it start?
- 1601 Darby Road, Havertown, PA 19083.
From the organizers
Join us for the 10th annual DEWEY DECIMAL DASH 5K RUN / WALK and support the Haverford Township Free Library!
This fun, family friendly event is for all ages and fitness levels and brings our community together to support our Library!
People who know Haverford Township know that this is a special place. It is a town where neighbors still know and look out for each other, where small businesses have thrived for generations, where residents feel real pride. Our Library, with 180,000 patron visits each year, is a gateway to community connection through social events, groups and programs that bring people together. Our Library is part of what makes this township an exceptional place to live.