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The 9th Annual Blobfest 5K, 10K & Half Marathon!

The 9th Annual Blobfest 5K, 10K & Half Marathon!

Phoenixville's Blobfest races celebrate a cult classic with a community-focused run.

Race Date

Jul 12, 2026

Location

Phoenixville, PA

Solid Pick51

Quick facts

Date
Sunday, July 12, 2026
Location
Phoenixville, Pennsylvania
Distance
Half marathon (13.1 mi) + 5K, 10K, 800m, Virtual 5K, 10K, or Half
Course
Loop Course
Terrain
Road
USATF certified
Not listed
Finishers on record
737

Highlights

Good For

PR FriendlyDestination Worthy

Atmosphere

Local CommunityGreat MedalGreat Swag

Course

Fast Flat

The Experience

Phoenixville, PA, transforms into a scene from a 1950s sci-fi flick each July for the annual Blobfest, and the accompanying 5K, 10K, and Half Marathon are central to the celebration. This event, now in its third edition, draws runners from about 18 states, eager to race in honor of the cult classic film 'The Blob,' which famously featured the town and the historic Colonial Theatre.

The half marathon course is a loop, designed to be flat and fast, with runners starting and finishing directly in front of the iconic Colonial Theatre on Bridge Street. The street itself is closed to traffic, creating a unique race-day atmosphere. A creative course decoration contest adds a quirky, community-driven element, with local groups decorating sections of the course with monster and alien themes, voted on by the runners themselves.

While the median field size hovers around 231 finishers, the event is growing, with recent editions seeing around 349 participants. The race offers a T-shirt as swag, and the focus is on the unique local holiday celebration and support for the historic theatre. The typical winning time for the half marathon is around 79 minutes, indicating a competitive field for those aiming for a personal best.

Race-provided description

The BEST Phoenixville running event (with the BEST finisher's medals) during the BEST local holiday in all of America, is BACK for 2026!

On Sunday July 12th, Steve McQueen and YOU star in the horror movie of the century! Uh...last century! 

Every year, Phoenixville, PA celebrates Blobfest in honor of 1958's The BLOB. And every year, we throw a running party to help celebrate and support the historic Colonial Theatre that stars in the film! Join us as we start and finish right in front of the Colonial Theatre for our 5K, 10K, Half Marathon, and Kids Fun Run! Course Decoration Contest!  Not a runner? Get a group of friends together to participate in our course decoration contest and you could win gift cards to our local Phoenixville restaurants. Here's how it works: Your group will be given an area on the 5K course to decorate in some Blob (or other monster/alien) theme. The only rule is that you don't obstruct or startle our runners. After the race, runners will vote for the best scenes and the winners will receive gift cards!   Location: The race starts in front of the Historic Colonial Theatre on Bridge Street! 227 Bridge St. The street will be closed to cars.

Parking: Free off-site parking will be available at Phoenixville Middle School (1000 Purple Pride Parkway). A free shuttle bus will run from 6:00 am to 11:00 am.  5K and 10K runners are encouraged to park at the middle school. Half marathon runners should park at the middle school only if they have picked up their bibs the day before (since the half marathon starts at 7 am). GPS LINK TO LOT

Paid Parking Near the Start/Finish:  See the parking map at the bottom of our registration page HERE. Every year it seems like there is less and less parking in Phoenixville (and now most spaces cost $$ on Sundays), so we STRONGLY ENCOURAGE CARPOOLING (or walking to the start if you live close by). There are four municipal lots near the starting area. One is accessible by the driveway between the Municipal building and the Foodery (325 Bridge Street). The other is on the corner of Taylor Alley and South Main Street. There is also parking at the Borough Hall lot (351 Bridge Street) and the Smithworks parking lot (30 N. Main St.). When you park at Smithworks, it's a very short walk over the bridge by the Foundry to get up to Bridge Street.

Finisher's Medal: Every finisher in the 5K, 10K, and Half Marathon will receive an incredible Blob-themed finisher's medal!

Flexible Options: If you register for the half marathon but the day comes and it is very hot (or for any reason), you can drop down to the 10K or 5K. Just tell our timer at the starting line.    Starting Times: Half marathon: 7 am / 10K: 8 am / 5K: 8:10 am / Kids' Run 8:15 am

Bib Pickup: There are 2 options for packet pickup this year.  SATURDAY 7/11 11am to 5 pm @ the RUNegades table at the Blobfest Street Fair on Bridge Street in Phoenixville. RACE DAY 7/12 starting @ 6 am.  

Pacers: 2026 pace times for the half and 10K will be available as we get closer to the race!

Water stops: We will have lots of water and hydrate at the race, but out of an abundance of caution, half and 10K runners are encouraged to bring their own water.  Half: miles 1, 3.1, 4.7, 6.55, 7.3, 9.2, 11.1, & 11.8 10K: miles 1, 3.1, 4.7 5K: mile 1.8

COURSE CUT-OFF: Due to the July heat, the half marathon cut-off time will be a strict 3:30. Walkers are encouraged to participate in the 5K or 10K. 

Steel City Offer: Steel City Coffeehouse and Brewery at 203 Bridge Street in Phoenixville is offering 10% off all purchases for runners who show their bibs after the race!   All participants in the kids fun-run receive a finisher's ribbon and prize. 

5K, 10K, and 1/2 marathon awards: The top 3 M/F overall and the top 3 M/F in each of the following age groups will be recognized: 14 & Under, 15-19, 20-29, 30-39, 40-49, 50-59, 60-69, 70-79, 80+

But that's not all!! We'll have special rewards for best dressed, best course decorations, and most Blobbiest team!   A portion of your registration fees and 100% of all donations will go to The Historic Colonial Theatre, the site of The Blob's most famous scene!   INDESCRIBABLE! INDESTRUCTIBLE! NOTHING CAN STOP IT! (is that old poster about the Blob...or YOU?)

PACKET PICKUP: There are 2 options for packet pickup this year.  SATURDAY 7/11 11am to 5 pm @ the RUNegades table at the Blobfest Street Fair on Bridge Street in Phoenixville. RACE DAY 7/12 starting @ 6 am near the start/finish area in front of the Colonial Theatre!

Logistics

Race Day

Sunday, July 12, 2026

Start Time

7:00 AM

Giveaway

T-Shirt

Start Location

227 Bridge Street, Phoenixville, PA, 19460

Directions

Course Info

Course Type

Loop Course

Terrain

road

Scenery

Urban

Surface

Paved

Difficulty

Ultra-Flat

Net Drop/km

0 m (Flat)

Separation

0.0%

Also Offers

5K10K800mVirtual 5K, 10K, or Half

Course Map

2 other maps for this race

Quality Score

Solid Pick51
Methodology
Heritage6/20

3 years running

Size12/15

~231 finishers a year

Momentum5/5

growing or steady

Loyalty13/20

13% returning runners

Course & details5/15

5 timing sources

National draw7/10

runners from 18 states

Front-pack speed3/5

winner 1:19:10

Weather0/10

typical high 87°F

Race Day Weather

5-year historical avg

Start (Low)

69°

Afternoon (High)

87°

Hot conditions — adjust pace expectations, prioritize hydration

0.2"

Precipitation

9 mph

Wind

76%

Humidity

Historical Finish Times

How 737 finishers actually crossed the line across 3 years.

Most recent

2025

Total finishers

737

Median time

2:09:31

Latest turnout

349

States

22

10%
25%
75%
90%
1:15p50 median ≈ 2:103:30

Turnout by year

20232025

'23'24'25
See full results

Hover the histogram to inspect specific finish times.

Race Photos

Frequently asked

When is the The 9th Annual Blobfest 5K, 10K & Half Marathon!?

The The 9th Annual Blobfest 5K, 10K & Half Marathon! is held on Sunday, July 12, 2026, starting at 7:00 AM.

Where does the The 9th Annual Blobfest 5K, 10K & Half Marathon! take place?

It takes place in Phoenixville, Pennsylvania.

What distances does the The 9th Annual Blobfest 5K, 10K & Half Marathon! offer?

The half marathon (13.1 miles), plus 5K, 10K, 800m, Virtual 5K, 10K, or Half.

Is the The 9th Annual Blobfest 5K, 10K & Half Marathon! course flat and good for a PR?

The The 9th Annual Blobfest 5K, 10K & Half Marathon! is a ultra-flat, loop course course.

How many people run the The 9th Annual Blobfest 5K, 10K & Half Marathon!?

HalfRuns has finish records for 737 runners who have completed the The 9th Annual Blobfest 5K, 10K & Half Marathon!.

HalfRuns editorial — independent, no paid placement.

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