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BOSTON MARATHON 2025

Corey Kessler

Bib: 26152•M

NY

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M50-54)
#0 / 1996
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
29:19
Rank: #24020
Start → 5K
29:19 | 9:26/mi
10K· 6.21 mi
58:32
Rank: #23945 (+75)
5K → 10K
29:13 | 9:24/mi
15K· 9.32 mi
1:27:28
Rank: #23707 (+238)
10K → 15K
28:56 | 9:19/mi
20K· 12.43 mi
1:56:37
Rank: #23405 (+302)
15K → 20K
29:09 | 9:23/mi
Half· 13.11 mi
2:02:54
Rank: #23351 (+54)
20K → Half
6:17 | 9:13/mi
25K· 15.53 mi
2:26:02
Rank: #23119 (+232)
Half → 25K
23:08 | 9:32/mi
30K· 18.64 mi
2:57:12
Rank: #22818 (+301)
25K → 30K
31:10 | 10:02/mi
20M
3:11:11
Rank: #22750 (+68)
30K → 20M
13:59 | 10:17/mi
21M
3:22:32
Rank: #22705 (+45)
20M → 21M
11:21 | 11:21/mi
35K· 21.75 mi
3:30:09
Rank: #22675 (+30)
21M → 35K
7:37 | 10:11/mi
23M
3:43:30
Rank: #22644 (+31)
35K → 23M
13:21 | 10:40/mi
24M
3:54:23
Rank: #22680 (-36)
23M → 24M
10:53 | 10:53/mi
40K· 24.85 mi
4:03:35
Rank: #22666 (+14)
24M → 40K
9:12 | 10:46/mi
25.2M
4:07:38
Rank: #22669 (-3)
40K → 25.2M
4:03 | 11:45/mi
Finish· 26.22 mi
4:17:06
Rank: #22604 (+65)
25.2M → Finish
9:28 | 9:17/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:02:54
Pace9:22 /mi
2nd Half
Distance13.11 mi
Time2:14:12
Pace10:14 /mi
📊Positive Split: 9.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:55:4529:199:2629:19
9:26
-
10K
6.21 mi12:24:5858:329:2529:13
9:24
-0:02
15K
9.32 mi12:53:541:27:289:2328:56
9:19
-0:05
20K
12.43 mi13:23:031:56:379:2329:09
9:23
+0:04
Half
13.11 mi13:29:202:02:549:226:17
9:13
-0:10
25K
15.53 mi13:52:282:26:029:2423:08
9:32
+0:19
30K
18.64 mi14:23:382:57:129:3031:10
10:02
+0:30
20M
20.00 mi14:37:373:11:119:3413:59
10:17
+0:15
21M
21.00 mi14:48:583:22:329:3911:21
11:21
+1:04
35K
21.75 mi14:56:353:30:099:407:37
10:11
-1:10
23M
23.00 mi15:09:563:43:309:4313:21
10:40
+0:29
24M
24.00 mi15:20:493:54:239:4610:53
10:53
+0:13
40K
24.85 mi15:30:014:03:359:489:12
10:46
-0:07
25.2M
25.20 mi15:34:044:07:389:504:03
11:45
+0:59
Finish
26.22 mi15:43:324:17:069:499:28
9:17
-2:28

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

9:13 /mi

Average Pace

9:49 /mi

Slowest Pace

11:45 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:35:30

60% of race

Time at Steady Pace

52:46

21% of race

Time at Slower Pace

48:50

19% of race

Average Pace: 9:48 /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 mi11:55:4529:199:2629:19
9:26
#24020
10K
6.21 mi12:24:5858:329:2529:13
9:24
#23945
15K
9.32 mi12:53:541:27:289:2328:56
9:19
#23707
20K
12.43 mi13:23:031:56:379:2329:09
9:23
#23405
Half
13.11 mi13:29:202:02:549:226:17
9:13
#23351
25K
15.53 mi13:52:282:26:029:2423:08
9:32
#23119
30K
18.64 mi14:23:382:57:129:3031:10
10:02
#22818
20M
20.00 mi14:37:373:11:119:3413:59
10:17
#22750
21M
21.00 mi14:48:583:22:329:3911:21
11:21
#22705
35K
21.75 mi14:56:353:30:099:407:37
10:11
#22675
23M
23.00 mi15:09:563:43:309:4313:21
10:40
#22644
24M
24.00 mi15:20:493:54:239:4610:53
10:53
#22680
40K
24.85 mi15:30:014:03:359:489:12
10:46
#22666
25.2M
25.20 mi15:34:044:07:389:504:03
11:45
#22669
Finish
26.22 mi15:43:324:17:069:499:28
9:17
#22604
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi24020142501425023247(Top 82%)13952(Top 87%)13952(Top 699%)
10K6.21 mi3.10 mi23945+7514228+2214228+2223833(Top 84%)14184(Top 88%)14184(Top 711%)
15K9.32 mi3.11 mi23707+23814120+10814120+10823247(Top 82%)13952(Top 87%)13952(Top 699%)
20K12.43 mi3.11 mi23405+30213998+12213998+12222514(Top 79%)13583(Top 84%)13583(Top 681%)
Half13.11 mi0.68 mi23351+5413972+2613972+2622609(Top 80%)13612(Top 85%)13612(Top 682%)
25K15.53 mi2.42 mi23119+23213853+11913853+11921997(Top 77%)13292(Top 83%)13292(Top 666%)
30K18.64 mi3.11 mi22818+30113679+17413679+17421687(Top 76%)13023(Top 81%)13023(Top 652%)
20M20.00 mi1.36 mi22750+6813617+6213617+6221837(Top 77%)12974(Top 81%)12974(Top 650%)
21M21.00 mi1.00 mi22705+4513584+3313584+3322269(Top 78%)13094(Top 81%)13094(Top 656%)
35K21.75 mi0.75 mi22675+3013554+3013554+3022374(Top 79%)13096(Top 81%)13096(Top 656%)
23M23.00 mi1.25 mi22644+3113512+4213512+4222428(Top 79%)13071(Top 81%)13071(Top 655%)
24M24.00 mi1.00 mi22680-3613505+713505+723731(Top 84%)13678(Top 85%)13678(Top 685%)
40K24.85 mi0.85 mi22666+1413484+2113484+2122583(Top 80%)13033(Top 81%)13033(Top 653%)
25.2M25.20 mi0.35 mi22669-313477+713477+722656(Top 80%)13111(Top 81%)13111(Top 657%)
Finish26.22 mi1.02 mi22604+6513426+5113426+5120337(Top 72%)11980(Top 74%)11980(Top 600%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 82%
×21stories
+97ft-345ft

Overall

23247

Males

13952

M50-54

13952

5K→10K

3.1 - 6.2 mi

Top 84%
×5stories
+79ft-138ft

Overall

23833

Males

14184

M50-54

14184

10K→15K

6.2 - 9.3 mi

Top 82%
×3stories
+67ft-78ft

Overall

23247

Males

13952

M50-54

13952

15K→20K

9.3 - 12.4 mi

Top 79%
×5stories
+106ft-86ft

Overall

22514

Males

13583

M50-54

13583

20K→Half

12.4 - 13.1 mi

Top 80%
×2stories
+19ft-37ft

Overall

22609

Males

13612

M50-54

13612

Half→25K

13.1 - 15.5 mi

Top 77%
×4stories
+66ft-88ft

Overall

21997

Males

13292

M50-54

13292

25K→30K

15.5 - 18.6 mi

Top 76%
×9stories
+181ft-148ft

Overall

21687

Males

13023

M50-54

13023

30K→20M

18.6 - 20.0 mi

Top 77%
×5stories
+64ft-50ft

Overall

21837

Males

12974

M50-54

12974

20M→21M

20.0 - 21.0 mi

Top 78%
×8stories
+106ft-24ft

Overall

22269

Males

13094

M50-54

13094

21M→35K

21.0 - 21.8 mi

Top 79%
×7stories
+17ft-86ft

Overall

22374

Males

13096

M50-54

13096

35K→23M

21.8 - 23.0 mi

Top 79%
×5stories
+23ft-63ft

Overall

22428

Males

13071

M50-54

13071

23M→24M

23.0 - 24.0 mi

Top 84%
×6stories
+12ft-82ft

Overall

23731

Males

13678

M50-54

13678

24M→40K

24.0 - 24.9 mi

Top 80%
×1story
+6ft-20ft

Overall

22583

Males

13033

M50-54

13033

40K→25.2M

24.9 - 25.2 mi

Top 80%
×1story
+13ft-16ft

Overall

22656

Males

13111

M50-54

13111

25.2M→Finish

25.2 - 26.2 mi

Top 72%
×2stories
+22ft-21ft

Overall

20337

Males

11980

M50-54

11980

Passing Analysis

Category:
Athletes Passed
2103
Passed By
687
Net Change
+1416
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#24020
5K → 10K270195+75#24020#23945
10K → 15K28850+238#23945#23707
15K → 20K33533+302#23707#23405
20K → Half6713+54#23405#23351
Half → 25K25624+232#23351#23119
25K → 30K33534+301#23119#22818
30K → 20M11547+68#22818#22750
20M → 21M8944+45#22750#22705
21M → 35K6434+30#22705#22675
35K → 23M8857+31#22675#22644
23M → 24M4783-36#22644#22680
24M → 40K4733+14#22680#22666
40K → 25.2M2023-3#22666#22669
25.2M → Finish8217+65#22669#22604
TOTALS2103687+1416
📊

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