Boston Marathon logo
BOSTON MARATHON 2025

Joshua Stack

Bib: 30322•M

MT

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M40-44)
#0 / 2247
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
31:17
Rank: #25748
Start → 5K
31:17 | 10:04/mi
10K· 6.21 mi
1:01:51
Rank: #25320 (+428)
5K → 10K
30:34 | 9:50/mi
15K· 9.32 mi
1:32:09
Rank: #25014 (+306)
10K → 15K
30:18 | 9:45/mi
20K· 12.43 mi
2:02:43
Rank: #24701 (+313)
15K → 20K
30:34 | 9:50/mi
Half· 13.11 mi
2:09:29
Rank: #24692 (+9)
20K → Half
6:46 | 9:55/mi
25K· 15.53 mi
2:35:29
Rank: #24734 (-42)
Half → 25K
26:00 | 10:43/mi
30K· 18.64 mi
3:08:58
Rank: #24530 (+204)
25K → 30K
33:29 | 10:47/mi
20M
3:23:44
Rank: #24462 (+68)
30K → 20M
14:46 | 10:52/mi
21M
3:34:57
Rank: #24318 (+144)
20M → 21M
11:13 | 11:13/mi
35K· 21.75 mi
3:43:09
Rank: #24303 (+15)
21M → 35K
8:12 | 10:58/mi
23M
3:57:15
Rank: #24285 (+18)
35K → 23M
14:06 | 11:16/mi
24M
4:08:27
Rank: #24287 (-2)
23M → 24M
11:12 | 11:12/mi
40K· 24.85 mi
4:18:13
Rank: #24290 (-3)
24M → 40K
9:46 | 11:25/mi
25.2M
4:22:18
Rank: #24270 (+20)
40K → 25.2M
4:05 | 11:50/mi
Finish· 26.22 mi
4:32:56
Rank: #24273 (-3)
25.2M → Finish
10:38 | 10:26/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
Time2:09:29
Pace9:53 /mi
2nd Half
Distance13.11 mi
Time2:23:27
Pace10:57 /mi
📊Positive Split: 10.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:51:5031:1710:0431:17
10:04
-
10K
6.21 mi12:22:241:01:519:5730:34
9:50
-0:14
15K
9.32 mi12:52:421:32:099:5330:18
9:45
-0:05
20K
12.43 mi13:23:162:02:439:5230:34
9:50
+0:05
Half
13.11 mi13:30:022:09:299:536:46
9:55
+0:05
25K
15.53 mi13:56:022:35:2910:0126:00
10:43
+0:48
30K
18.64 mi14:29:313:08:5810:0833:29
10:47
+0:04
20M
20.00 mi14:44:173:23:4410:1114:46
10:52
+0:05
21M
21.00 mi14:55:303:34:5710:1411:13
11:13
+0:21
35K
21.75 mi15:03:423:43:0910:168:12
10:58
-0:15
23M
23.00 mi15:17:483:57:1510:1914:06
11:16
+0:18
24M
24.00 mi15:29:004:08:2710:2111:12
11:12
-0:04
40K
24.85 mi15:38:464:18:1310:239:46
11:25
+0:13
25.2M
25.20 mi15:42:514:22:1810:254:05
11:50
+0:25
Finish
26.22 mi15:53:294:32:5610:2510:38
10:26
-1:24

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

9:45 /mi

Average Pace

10:25 /mi

Slowest Pace

11:50 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:20:07

51% of race

Time at Steady Pace

1:22:27

30% of race

Time at Slower Pace

50:22

18% of race

Average Pace: 10:25 /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 mi11:51:5031:1710:0431:17
10:04
#25748
10K
6.21 mi12:22:241:01:519:5730:34
9:50
#25320
15K
9.32 mi12:52:421:32:099:5330:18
9:45
#25014
20K
12.43 mi13:23:162:02:439:5230:34
9:50
#24701
Half
13.11 mi13:30:022:09:299:536:46
9:55
#24692
25K
15.53 mi13:56:022:35:2910:0126:00
10:43
#24734
30K
18.64 mi14:29:313:08:5810:0833:29
10:47
#24530
20M
20.00 mi14:44:173:23:4410:1114:46
10:52
#24462
21M
21.00 mi14:55:303:34:5710:1411:13
11:13
#24318
35K
21.75 mi15:03:423:43:0910:168:12
10:58
#24303
23M
23.00 mi15:17:483:57:1510:1914:06
11:16
#24285
24M
24.00 mi15:29:004:08:2710:2111:12
11:12
#24287
40K
24.85 mi15:38:464:18:1310:239:46
11:25
#24290
25.2M
25.20 mi15:42:514:22:1810:254:05
11:50
#24270
Finish
26.22 mi15:53:294:32:5610:2510:38
10:26
#24273
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi25748150661506624435(Top 86%)14456(Top 90%)14456(Top 643%)
10K6.21 mi3.10 mi25320+42814849+21714849+21724954(Top 88%)14680(Top 91%)14680(Top 653%)
15K9.32 mi3.11 mi25014+30614719+13014719+13024435(Top 86%)14456(Top 90%)14456(Top 643%)
20K12.43 mi3.11 mi24701+31314565+15414565+15423860(Top 84%)14164(Top 88%)14164(Top 630%)
Half13.11 mi0.68 mi24692+914563+214563+224651(Top 87%)14503(Top 90%)14503(Top 645%)
25K15.53 mi2.42 mi24734-4214561+214561+224754(Top 87%)14535(Top 90%)14535(Top 647%)
30K18.64 mi3.11 mi24530+20414447+11414447+11423558(Top 83%)13864(Top 86%)13864(Top 617%)
20M20.00 mi1.36 mi24462+6814407+4014407+4023306(Top 82%)13662(Top 85%)13662(Top 608%)
21M21.00 mi1.00 mi24318+14414314+9314314+9321953(Top 77%)12957(Top 80%)12957(Top 577%)
35K21.75 mi0.75 mi24303+1514298+1614298+1624117(Top 85%)13934(Top 87%)13934(Top 620%)
23M23.00 mi1.25 mi24285+1814280+1814280+1823806(Top 84%)13740(Top 85%)13740(Top 611%)
24M24.00 mi1.00 mi24287-214278+214278+224387(Top 86%)14011(Top 87%)14011(Top 624%)
40K24.85 mi0.85 mi24290-314260+1814260+1823995(Top 84%)13772(Top 86%)13772(Top 613%)
25.2M25.20 mi0.35 mi24270+2014245+1514245+1522889(Top 81%)13232(Top 82%)13232(Top 589%)
Finish26.22 mi1.02 mi24273-314227+1814227+1824129(Top 85%)13834(Top 86%)13834(Top 616%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 86%
×21stories
+97ft-345ft

Overall

24435

Males

14456

M40-44

14456

5K→10K

3.1 - 6.2 mi

Top 88%
×5stories
+79ft-138ft

Overall

24954

Males

14680

M40-44

14680

10K→15K

6.2 - 9.3 mi

Top 86%
×3stories
+67ft-78ft

Overall

24435

Males

14456

M40-44

14456

15K→20K

9.3 - 12.4 mi

Top 84%
×5stories
+106ft-86ft

Overall

23860

Males

14164

M40-44

14164

20K→Half

12.4 - 13.1 mi

Top 87%
×2stories
+19ft-37ft

Overall

24651

Males

14503

M40-44

14503

Half→25K

13.1 - 15.5 mi

Top 87%
×4stories
+66ft-88ft

Overall

24754

Males

14535

M40-44

14535

25K→30K

15.5 - 18.6 mi

Top 83%
×9stories
+181ft-148ft

Overall

23558

Males

13864

M40-44

13864

30K→20M

18.6 - 20.0 mi

Top 82%
×5stories
+64ft-50ft

Overall

23306

Males

13662

M40-44

13662

20M→21M

20.0 - 21.0 mi

Top 77%
×8stories
+106ft-24ft

Overall

21953

Males

12957

M40-44

12957

21M→35K

21.0 - 21.8 mi

Top 85%
×7stories
+17ft-86ft

Overall

24117

Males

13934

M40-44

13934

35K→23M

21.8 - 23.0 mi

Top 84%
×5stories
+23ft-63ft

Overall

23806

Males

13740

M40-44

13740

23M→24M

23.0 - 24.0 mi

Top 86%
×6stories
+12ft-82ft

Overall

24387

Males

14011

M40-44

14011

24M→40K

24.0 - 24.9 mi

Top 84%
×1story
+6ft-20ft

Overall

23995

Males

13772

M40-44

13772

40K→25.2M

24.9 - 25.2 mi

Top 81%
×1story
+13ft-16ft

Overall

22889

Males

13232

M40-44

13232

25.2M→Finish

25.2 - 26.2 mi

Top 85%
×2stories
+22ft-21ft

Overall

24129

Males

13834

M40-44

13834

Passing Analysis

Category:
Athletes Passed
1973
Passed By
498
Net Change
+1475
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#25748
5K → 10K47143+428#25748#25320
10K → 15K32620+306#25320#25014
15K → 20K33724+313#25014#24701
20K → Half3122+9#24701#24692
Half → 25K81123-42#24692#24734
25K → 30K24238+204#24734#24530
30K → 20M9022+68#24530#24462
20M → 21M1517+144#24462#24318
21M → 35K3924+15#24318#24303
35K → 23M6446+18#24303#24285
23M → 24M4446-2#24285#24287
24M → 40K4043-3#24287#24290
40K → 25.2M222+20#24290#24270
25.2M → Finish3538-3#24270#24273
TOTALS1973498+1475
📊

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