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BOSTON MARATHON 2025

Stephen Callahan

Bib: 31971•M

MA

0:00
0:00
/ mi
Masters
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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
32:39
Rank: #26783
Start → 5K
32:39 | 10:31/mi
10K· 6.21 mi
1:04:56
Rank: #26397 (+386)
5K → 10K
32:17 | 10:23/mi
15K· 9.32 mi
1:37:01
Rank: #26097 (+300)
10K → 15K
32:05 | 10:20/mi
20K· 12.43 mi
2:08:59
Rank: #25751 (+346)
15K → 20K
31:58 | 10:17/mi
Half· 13.11 mi
2:15:51
Rank: #25710 (+41)
20K → Half
6:52 | 10:04/mi
25K· 15.53 mi
2:41:47
Rank: #25548 (+162)
Half → 25K
25:56 | 10:42/mi
30K· 18.64 mi
3:24:55
Rank: #26054 (-506)
25K → 30K
43:08 | 13:53/mi
20M
3:45:06
Rank: #26305 (-251)
30K → 20M
20:11 | 14:51/mi
21M
4:00:33
Rank: #26411 (-106)
20M → 21M
15:27 | 15:27/mi
35K· 21.75 mi
4:11:34
Rank: #26522 (-111)
21M → 35K
11:01 | 14:44/mi
23M
4:30:45
Rank: #26695 (-173)
35K → 23M
19:11 | 15:19/mi
24M
4:47:46
Rank: #26921 (-226)
23M → 24M
17:01 | 17:01/mi
40K· 24.85 mi
5:02:19
Rank: #27038 (-117)
24M → 40K
14:33 | 17:01/mi
25.2M
5:09:12
Rank: #27114 (-76)
40K → 25.2M
6:53 | 19:58/mi
Finish· 26.22 mi
5:27:19
Rank: #27333 (-219)
25.2M → Finish
18:07 | 17:47/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:15:51
Pace10:22 /mi
2nd Half
Distance13.11 mi
Time3:11:28
Pace14:36 /mi
📊Positive Split: 40.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:56:3832:3910:3132:39
10:31
-
10K
6.21 mi12:28:551:04:5610:2732:17
10:23
-0:08
15K
9.32 mi13:01:001:37:0110:2532:05
10:20
-0:03
20K
12.43 mi13:32:582:08:5910:2331:58
10:17
-0:03
Half
13.11 mi13:39:502:15:5110:226:52
10:04
-0:13
25K
15.53 mi14:05:462:41:4710:2525:56
10:42
+0:38
30K
18.64 mi14:48:543:24:5511:0043:08
13:53
+3:11
20M
20.00 mi15:09:053:45:0611:1520:11
14:51
+0:58
21M
21.00 mi15:24:324:00:3311:2715:27
15:27
+0:36
35K
21.75 mi15:35:334:11:3411:3411:01
14:44
-0:43
23M
23.00 mi15:54:444:30:4511:4619:11
15:19
+0:35
24M
24.00 mi16:11:454:47:4611:5917:01
17:01
+1:42
40K
24.85 mi16:26:185:02:1912:1014:33
17:01
0:00
25.2M
25.20 mi16:33:115:09:1212:166:53
19:58
+2:57
Finish
26.22 mi16:51:185:27:1912:3018:07
17:47
-2:11

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

10:04 /mi

Average Pace

12:30 /mi

Slowest Pace

19:58 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:41:47

49% of race

Time at Steady Pace

1:48:58

33% of race

Time at Slower Pace

56:34

17% of race

Average Pace: 12:29 /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 mi11:56:3832:3910:3132:39
10:31
#26783
10K
6.21 mi12:28:551:04:5610:2732:17
10:23
#26397
15K
9.32 mi13:01:001:37:0110:2532:05
10:20
#26097
20K
12.43 mi13:32:582:08:5910:2331:58
10:17
#25751
Half
13.11 mi13:39:502:15:5110:226:52
10:04
#25710
25K
15.53 mi14:05:462:41:4710:2525:56
10:42
#25548
30K
18.64 mi14:48:543:24:5511:0043:08
13:53
#26054
20M
20.00 mi15:09:053:45:0611:1520:11
14:51
#26305
21M
21.00 mi15:24:324:00:3311:2715:27
15:27
#26411
35K
21.75 mi15:35:334:11:3411:3411:01
14:44
#26522
23M
23.00 mi15:54:444:30:4511:4619:11
15:19
#26695
24M
24.00 mi16:11:454:47:4611:5917:01
17:01
#26921
40K
24.85 mi16:26:185:02:1912:1014:33
17:01
#27038
25.2M
25.20 mi16:33:115:09:1212:166:53
19:58
#27114
Finish
26.22 mi16:51:185:27:1912:3018:07
17:47
#27333
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi26783155101551025643(Top 90%)14995(Top 93%)14995(Top 667%)
10K6.21 mi3.10 mi26397+38615333+17715333+17726082(Top 92%)15181(Top 94%)15181(Top 676%)
15K9.32 mi3.11 mi26097+30015199+13415199+13425643(Top 90%)14995(Top 93%)14995(Top 667%)
20K12.43 mi3.11 mi25751+34615043+15615043+15624808(Top 87%)14590(Top 91%)14590(Top 649%)
Half13.11 mi0.68 mi25710+4115024+1915024+1924964(Top 88%)14663(Top 91%)14663(Top 653%)
25K15.53 mi2.42 mi25548+16214937+8714937+8724711(Top 87%)14511(Top 90%)14511(Top 646%)
30K18.64 mi3.11 mi26054-50615134-19715134-19727426(Top 97%)15623(Top 97%)15623(Top 695%)
20M20.00 mi1.36 mi26305-25115233-9915233-9927802(Top 98%)15762(Top 98%)15762(Top 701%)
21M21.00 mi1.00 mi26411-10615264-3115264-3127495(Top 97%)15615(Top 97%)15615(Top 695%)
35K21.75 mi0.75 mi26522-11115308-4415308-4428005(Top 99%)15856(Top 98%)15856(Top 706%)
23M23.00 mi1.25 mi26695-17315365-5715365-5728024(Top 99%)15857(Top 98%)15857(Top 706%)
24M24.00 mi1.00 mi26921-22615464-9915464-9928312(Top 100%)16040(Top 100%)16040(Top 714%)
40K24.85 mi0.85 mi27038-11715507-4315507-4328248(Top 99%)15999(Top 99%)15999(Top 712%)
25.2M25.20 mi0.35 mi27114-7615533-2615533-2628353(Top 100%)16068(Top 100%)16068(Top 715%)
Finish26.22 mi1.02 mi27333-21915626-9315626-9328366(Top 100%)16080(Top 100%)16080(Top 716%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 90%
×21stories
+97ft-345ft

Overall

25643

Males

14995

M40-44

14995

5K→10K

3.1 - 6.2 mi

Top 92%
×5stories
+79ft-138ft

Overall

26082

Males

15181

M40-44

15181

10K→15K

6.2 - 9.3 mi

Top 90%
×3stories
+67ft-78ft

Overall

25643

Males

14995

M40-44

14995

15K→20K

9.3 - 12.4 mi

Top 87%
×5stories
+106ft-86ft

Overall

24808

Males

14590

M40-44

14590

20K→Half

12.4 - 13.1 mi

Top 88%
×2stories
+19ft-37ft

Overall

24964

Males

14663

M40-44

14663

Half→25K

13.1 - 15.5 mi

Top 87%
×4stories
+66ft-88ft

Overall

24711

Males

14511

M40-44

14511

25K→30K

15.5 - 18.6 mi

Top 97%
×9stories
+181ft-148ft

Overall

27426

Males

15623

M40-44

15623

30K→20M

18.6 - 20.0 mi

Top 98%
×5stories
+64ft-50ft

Overall

27802

Males

15762

M40-44

15762

20M→21M

20.0 - 21.0 mi

Top 97%
×8stories
+106ft-24ft

Overall

27495

Males

15615

M40-44

15615

21M→35K

21.0 - 21.8 mi

Top 99%
×7stories
+17ft-86ft

Overall

28005

Males

15856

M40-44

15856

35K→23M

21.8 - 23.0 mi

Top 99%
×5stories
+23ft-63ft

Overall

28024

Males

15857

M40-44

15857

23M→24M

23.0 - 24.0 mi

Top 100%
×6stories
+12ft-82ft

Overall

28312

Males

16040

M40-44

16040

24M→40K

24.0 - 24.9 mi

Top 99%
×1story
+6ft-20ft

Overall

28248

Males

15999

M40-44

15999

40K→25.2M

24.9 - 25.2 mi

Top 100%
×1story
+13ft-16ft

Overall

28353

Males

16068

M40-44

16068

25.2M→Finish

25.2 - 26.2 mi

Top 100%
×2stories
+22ft-21ft

Overall

28366

Males

16080

M40-44

16080

Passing Analysis

Category:
Athletes Passed
1395
Passed By
1945
Net Change
-550
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#26783
5K → 10K42741+386#26783#26397
10K → 15K31515+300#26397#26097
15K → 20K3515+346#26097#25751
20K → Half421+41#25751#25710
Half → 25K19836+162#25710#25548
25K → 30K15521-506#25548#26054
30K → 20M10261-251#26054#26305
20M → 21M13119-106#26305#26411
21M → 35K4115-111#26411#26522
35K → 23M11184-173#26522#26695
23M → 24M5231-226#26695#26921
24M → 40K2119-117#26921#27038
40K → 25.2M076-76#27038#27114
25.2M → Finish2221-219#27114#27333
TOTALS13951945-550
📊

Passing Visuals

Category:
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🔥Passing Intensity

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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing