Boston Marathon logo
BOSTON MARATHON 2025

Zachary Polglase

Bib: 27352•M

VA

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 28404
Gender (Male)
#0 / 16105
Division (M18-39)
#0 / 5642
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
32:08
Rank: #26387
Start → 5K
32:08 | 10:21/mi
10K· 6.21 mi
1:02:38
Rank: #25615 (+772)
5K → 10K
30:30 | 9:49/mi
15K· 9.32 mi
1:32:37
Rank: #25137 (+478)
10K → 15K
29:59 | 9:39/mi
20K· 12.43 mi
2:03:02
Rank: #24759 (+378)
15K → 20K
30:25 | 9:47/mi
Half· 13.11 mi
2:09:34
Rank: #24710 (+49)
20K → Half
6:32 | 9:35/mi
25K· 15.53 mi
2:36:26
Rank: #24869 (-159)
Half → 25K
26:52 | 11:05/mi
30K· 18.64 mi
3:12:31
Rank: #24926 (-57)
25K → 30K
36:05 | 11:37/mi
20M
3:31:23
Rank: #25198 (-272)
30K → 20M
18:52 | 13:53/mi
21M
3:45:39
Rank: #25297 (-99)
20M → 21M
14:16 | 14:16/mi
35K· 21.75 mi
3:54:54
Rank: #25338 (-41)
21M → 35K
9:15 | 12:22/mi
23M
4:12:00
Rank: #25493 (-155)
35K → 23M
17:06 | 13:39/mi
24M
4:26:03
Rank: #25677 (-184)
23M → 24M
14:03 | 14:03/mi
40K· 24.85 mi
4:36:54
Rank: #25700 (-23)
24M → 40K
10:51 | 12:41/mi
25.2M
4:41:16
Rank: #25688 (+12)
40K → 25.2M
4:22 | 12:40/mi
Finish· 26.22 mi
4:50:54
Rank: #25576 (+112)
25.2M → Finish
9:38 | 9:27/mi

The Course

Is this your race?

Claim it — unlock a deeper AI report on this race, free

A personalized Race Performance Report that goes beyond this page — emailed to you, built from your real splits.

Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:09:34
Pace9:53 /mi
2nd Half
Distance13.11 mi
Time2:41:20
Pace12:18 /mi
📊Positive Split: 24.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:49:0932:0810:2132:08
10:21
-
10K
6.21 mi12:19:391:02:3810:0530:30
9:49
-0:32
15K
9.32 mi12:49:381:32:379:5629:59
9:39
-0:10
20K
12.43 mi13:20:032:03:029:5430:25
9:47
+0:08
Half
13.11 mi13:26:352:09:349:536:32
9:35
-0:12
25K
15.53 mi13:53:272:36:2610:0426:52
11:05
+1:30
30K
18.64 mi14:29:323:12:3110:2036:05
11:37
+0:32
20M
20.00 mi14:48:243:31:2310:3418:52
13:53
+2:16
21M
21.00 mi15:02:403:45:3910:4514:16
14:16
+0:23
35K
21.75 mi15:11:553:54:5410:489:15
12:22
-1:54
23M
23.00 mi15:29:014:12:0010:5717:06
13:39
+1:17
24M
24.00 mi15:43:044:26:0311:0514:03
14:03
+0:24
40K
24.85 mi15:53:554:36:5411:0810:51
12:41
-1:22
25.2M
25.20 mi15:58:174:41:1611:104:22
12:40
-0:01
Finish
26.22 mi16:07:554:50:5411:069:38
9:27
-3:13

Checkpoints & Pacing

📈Pace Line

Pace Progression

Track your pace changes throughout the race. Dot colors mark your quickest to easiest segments, relative to your own pace.

Fastest Pace

9:27 /mi

Average Pace

11:06 /mi

Slowest Pace

14:16 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:19:12

48% of race

Time at Steady Pace

1:12:12

25% of race

Time at Slower Pace

1:19:30

27% of race

Average Pace: 11:06 /mi

Loading chart...
Faster pace (< avg)
Steady pace (≈ avg)
Slower pace (> avg)

🎨Heatmap

Pace Heatmap

Where you sped up and eased off relative to your own pace across the race. Colors are relative to your own range, not to other runners.

Loading...
0mi6.6mi13.1mi19.7mi26.2mi
Pace:
Faster
Steady
Slower

Click or hover over segments to see details

✨Sparklines

Checkpoint Splits with Pace Trends

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi11:49:0932:0810:2132:08
10:21
#26387
10K
6.21 mi12:19:391:02:3810:0530:30
9:49
#25615
15K
9.32 mi12:49:381:32:379:5629:59
9:39
#25137
20K
12.43 mi13:20:032:03:029:5430:25
9:47
#24759
Half
13.11 mi13:26:352:09:349:536:32
9:35
#24710
25K
15.53 mi13:53:272:36:2610:0426:52
11:05
#24869
30K
18.64 mi14:29:323:12:3110:2036:05
11:37
#24926
20M
20.00 mi14:48:243:31:2310:3418:52
13:53
#25198
21M
21.00 mi15:02:403:45:3910:4514:16
14:16
#25297
35K
21.75 mi15:11:553:54:5410:489:15
12:22
#25338
23M
23.00 mi15:29:014:12:0010:5717:06
13:39
#25493
24M
24.00 mi15:43:044:26:0311:0514:03
14:03
#25677
40K
24.85 mi15:53:554:36:5411:0810:51
12:41
#25700
25.2M
25.20 mi15:58:174:41:1611:104:22
12:40
#25688
Finish
26.22 mi16:07:554:50:5411:069:38
9:27
#25576
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi26387153511535124146(Top 85%)14331(Top 89%)14331(Top 254%)
10K6.21 mi3.10 mi25615+77214987+36414987+36424890(Top 88%)14652(Top 91%)14652(Top 260%)
15K9.32 mi3.11 mi25137+47814773+21414773+21424146(Top 85%)14331(Top 89%)14331(Top 254%)
20K12.43 mi3.11 mi24759+37814596+17714596+17723739(Top 84%)14110(Top 88%)14110(Top 250%)
Half13.11 mi0.68 mi24710+4914571+2514571+2523791(Top 84%)14150(Top 88%)14150(Top 251%)
25K15.53 mi2.42 mi24869-15914619-4814619-4825320(Top 89%)14779(Top 92%)14779(Top 262%)
30K18.64 mi3.11 mi24926-5714625-614625-625020(Top 88%)14536(Top 90%)14536(Top 258%)
20M20.00 mi1.36 mi25198-27214723-9814723-9827199(Top 96%)15467(Top 96%)15467(Top 274%)
21M21.00 mi1.00 mi25297-9914759-3614759-3626498(Top 93%)15117(Top 94%)15117(Top 268%)
35K21.75 mi0.75 mi25338-4114765-614765-626319(Top 93%)15001(Top 93%)15001(Top 266%)
23M23.00 mi1.25 mi25493-15514823-5814823-5827025(Top 95%)15334(Top 95%)15334(Top 272%)
24M24.00 mi1.00 mi25677-18414898-7514898-7527677(Top 97%)15633(Top 97%)15633(Top 277%)
40K24.85 mi0.85 mi25700-23148981489825923(Top 91%)14746(Top 92%)14746(Top 261%)
25.2M25.20 mi0.35 mi25688+1214890+814890+824499(Top 86%)14018(Top 87%)14018(Top 248%)
Finish26.22 mi1.02 mi25576+11214823+6714823+6721015(Top 74%)12303(Top 76%)12303(Top 218%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 85%
×21stories
+97ft-345ft

Overall

24146

Males

14331

M18-39

14331

5K→10K

3.1 - 6.2 mi

Top 88%
×5stories
+79ft-138ft

Overall

24890

Males

14652

M18-39

14652

10K→15K

6.2 - 9.3 mi

Top 85%
×3stories
+67ft-78ft

Overall

24146

Males

14331

M18-39

14331

15K→20K

9.3 - 12.4 mi

Top 84%
×5stories
+106ft-86ft

Overall

23739

Males

14110

M18-39

14110

20K→Half

12.4 - 13.1 mi

Top 84%
×2stories
+19ft-37ft

Overall

23791

Males

14150

M18-39

14150

Half→25K

13.1 - 15.5 mi

Top 89%
×4stories
+66ft-88ft

Overall

25320

Males

14779

M18-39

14779

25K→30K

15.5 - 18.6 mi

Top 88%
×9stories
+181ft-148ft

Overall

25020

Males

14536

M18-39

14536

30K→20M

18.6 - 20.0 mi

Top 96%
×5stories
+64ft-50ft

Overall

27199

Males

15467

M18-39

15467

20M→21M

20.0 - 21.0 mi

Top 93%
×8stories
+106ft-24ft

Overall

26498

Males

15117

M18-39

15117

21M→35K

21.0 - 21.8 mi

Top 93%
×7stories
+17ft-86ft

Overall

26319

Males

15001

M18-39

15001

35K→23M

21.8 - 23.0 mi

Top 95%
×5stories
+23ft-63ft

Overall

27025

Males

15334

M18-39

15334

23M→24M

23.0 - 24.0 mi

Top 97%
×6stories
+12ft-82ft

Overall

27677

Males

15633

M18-39

15633

24M→40K

24.0 - 24.9 mi

Top 91%
×1story
+6ft-20ft

Overall

25923

Males

14746

M18-39

14746

40K→25.2M

24.9 - 25.2 mi

Top 86%
×1story
+13ft-16ft

Overall

24499

Males

14018

M18-39

14018

25.2M→Finish

25.2 - 26.2 mi

Top 74%
×2stories
+22ft-21ft

Overall

21015

Males

12303

M18-39

12303

Passing Analysis

Category:
Athletes Passed
2078
Passed By
1267
Net Change
+811
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#26387
5K → 10K7786+772#26387#25615
10K → 15K4857+478#25615#25137
15K → 20K3857+378#25137#24759
20K → Half578+49#24759#24710
Half → 25K47206-159#24710#24869
25K → 30K107164-57#24869#24926
30K → 20M7279-272#24926#25198
20M → 21M23122-99#25198#25297
21M → 35K1657-41#25297#25338
35K → 23M11166-155#25338#25493
23M → 24M11195-184#25493#25677
24M → 40K1942-23#25677#25700
40K → 25.2M186+12#25700#25688
25.2M → Finish1142+112#25688#25576
TOTALS20781267+811
📊

Passing Visuals

Category:
Loading...

🔥Passing Intensity

Loading...

🔄Passing Circle

Loading...

🌊Position Flow

Loading...

🏃Race Lanes

Loading...

Upload your GPX file

Supports Garmin, Apple Watch, Polar, Suunto, COROS, Strava, and other apps

.gpx files up to 10MB

Export Track Data

Download your race performance as a GPX or TCX file to import into Strava, Garmin Connect, or other fitness apps.

Questions or issues regarding timing data?

If you notice any discrepancies in your timing data or have questions about your results, our support team can help.

Contact Race Support
Share Feedback

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing