Sat, Mar 13, 2027

Marshfield St. Patrick's Day 5k

Marshfield, MA

Registration openAnnual since at least 2024

Entry is $30 now and rises to $35 after Dec 31, 2026, so registering before then saves $5.

About the Marshfield St. Patrick's Day 5k

The course runs along the ocean and is certified for record-keeping, so it draws people who want a real time as much as those who show up in green. It is flat and fast, with the water beside you for most of it, and the St. Patrick's Day theme means the crowd brings some theater along with the racing.

The finish drops you into Brant Rock, where several pubs and restaurants host post-race gatherings. It is a walkable cluster, so you can move between spots and find people you know. Cash prizes go to the top overall finishers, with a separate bonus for anyone who breaks the course record.

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Finish-Time Stats

Going by the 2026 results, this is a big field, and the spread of finish times is wide, so this is a mostly recreational race rather than one for club runners.

5K · 2026 results

2,665finishers

14:42winner

33:57median

1:14:44cutoff

Top 3: Louis Serafini (14:42) · aj ernst (14:50) · Patrick Cunningham (15:44)

The Marshfield St. Patrick's Day 5k has been held every year since at least 2024. That is as far back as RunSignup's records for this race go, so it may well be older.

Where Would You Finish?

Enter a finish time to see where it lands against the most recent 5K results.

Median

See how your time stacks up nationally →

How we calculate these stats: RunSesh calculates these figures from the most recent published results of past editions, sourced from RunSignup. We show aggregates only: field size, winning and median times, and the cutoff. We never publish individual finisher tables. Last updated Sep 20, 2026.

Distances & Start Times

5K3/13/2027 10:00$30

Going for a Time?

Set a goal and get a pace band: every mile split on a card sized for your phone lock screen, so race morning needs no math.

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Common Questions About the Marshfield St. Patrick's Day 5k

Will I finish last at the Marshfield St. Patrick's Day 5k?

Almost certainly not. Half the 5K field finished slower than 33:57, and the last recorded finisher came in around 1:14:44, so there is a long tail of runners behind the middle of the pack. Most fields are far slower than people expect.

Is the Marshfield St. Patrick's Day 5k a good first 5K?

With 2,665 finishers there are runners at every pace, so you are never out on your own. There is no qualifying time, and the finish-time spread above shows how varied the field really is. If it is your first 5K, that spread matters more than the winner's time.

How competitive is the Marshfield St. Patrick's Day 5k?

The 5K winner ran 14:42 while the median finisher took 33:57. That spread points to a broad, mostly recreational field rather than a race dominated by club runners.