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BOSTON MARATHON 2025

Carl Kern Ii

Bib: 23336•M

PA

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M60-64)
#0 / 1259
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
26:56
Rank: #20848
Start → 5K
26:56 | 8:40/mi
10K· 6.21 mi
53:39
Rank: #20573 (+275)
5K → 10K
26:43 | 8:36/mi
15K· 9.32 mi
1:20:12
Rank: #20226 (+347)
10K → 15K
26:33 | 8:33/mi
20K· 12.43 mi
1:47:10
Rank: #19994 (+232)
15K → 20K
26:58 | 8:41/mi
Half· 13.11 mi
1:52:58
Rank: #19951 (+43)
20K → Half
5:48 | 8:30/mi
25K· 15.53 mi
2:14:19
Rank: #19759 (+192)
Half → 25K
21:21 | 8:48/mi
30K· 18.64 mi
2:42:44
Rank: #19493 (+266)
25K → 30K
28:25 | 9:09/mi
20M
2:55:11
Rank: #19345 (+148)
30K → 20M
12:27 | 9:10/mi
21M
3:04:39
Rank: #19135 (+210)
20M → 21M
9:28 | 9:28/mi
35K· 21.75 mi
3:10:57
Rank: #18997 (+138)
21M → 35K
6:18 | 8:25/mi
23M
3:22:16
Rank: #18832 (+165)
35K → 23M
11:19 | 9:02/mi
24M
3:31:21
Rank: #18803 (+29)
23M → 24M
9:05 | 9:05/mi
40K· 24.85 mi
3:39:03
Rank: #18699 (+104)
24M → 40K
7:42 | 9:00/mi
25.2M
3:42:23
Rank: #18634 (+65)
40K → 25.2M
3:20 | 9:40/mi
Finish· 26.22 mi
3:51:13
Rank: #18587 (+47)
25.2M → Finish
8:50 | 8:40/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:52:58
Pace8:37 /mi
2nd Half
Distance13.11 mi
Time1:58:15
Pace9:01 /mi
📊Positive Split: 4.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:24:1926:568:4026:56
8:40
-
10K
6.21 mi11:51:0253:398:3826:43
8:36
-0:04
15K
9.32 mi12:17:351:20:128:3626:33
8:33
-0:03
20K
12.43 mi12:44:331:47:108:3726:58
8:41
+0:08
Half
13.11 mi12:50:211:52:588:375:48
8:30
-0:11
25K
15.53 mi13:11:422:14:198:3921:21
8:48
+0:18
30K
18.64 mi13:40:072:42:448:4428:25
9:09
+0:21
20M
20.00 mi13:52:342:55:118:4612:27
9:10
+0:01
21M
21.00 mi14:02:023:04:398:489:28
9:28
+0:18
35K
21.75 mi14:08:203:10:578:476:18
8:25
-1:03
23M
23.00 mi14:19:393:22:168:4811:19
9:02
+0:37
24M
24.00 mi14:28:443:31:218:489:05
9:05
+0:03
40K
24.85 mi14:36:263:39:038:497:42
9:00
-0:05
25.2M
25.20 mi14:39:463:42:238:493:20
9:40
+0:40
Finish
26.22 mi14:48:363:51:138:508:50
8:40
-1:00

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

8:25 /mi

Average Pace

8:50 /mi

Slowest Pace

9:40 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:38:25

94% of race

Time at Steady Pace

12:48

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:49 /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 mi11:24:1926:568:4026:56
8:40
#20848
10K
6.21 mi11:51:0253:398:3826:43
8:36
#20573
15K
9.32 mi12:17:351:20:128:3626:33
8:33
#20226
20K
12.43 mi12:44:331:47:108:3726:58
8:41
#19994
Half
13.11 mi12:50:211:52:588:375:48
8:30
#19951
25K
15.53 mi13:11:422:14:198:3921:21
8:48
#19759
30K
18.64 mi13:40:072:42:448:4428:25
9:09
#19493
20M
20.00 mi13:52:342:55:118:4612:27
9:10
#19345
21M
21.00 mi14:02:023:04:398:489:28
9:28
#19135
35K
21.75 mi14:08:203:10:578:476:18
8:25
#18997
23M
23.00 mi14:19:393:22:168:4811:19
9:02
#18832
24M
24.00 mi14:28:443:31:218:489:05
9:05
#18803
40K
24.85 mi14:36:263:39:038:497:42
9:00
#18699
25.2M
25.20 mi14:39:463:42:238:493:20
9:40
#18634
Finish
26.22 mi14:48:363:51:138:508:50
8:40
#18587
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM60-64Seg. OverallSeg. MalesSeg. M60-64
5K3.11 mi3.11 mi20848127881278819597(Top 69%)12320(Top 76%)12320(Top 979%)
10K6.21 mi3.10 mi20573+27512703+8512703+8520341(Top 72%)12625(Top 78%)12625(Top 1003%)
15K9.32 mi3.11 mi20226+34712568+13512568+13519597(Top 69%)12320(Top 76%)12320(Top 979%)
20K12.43 mi3.11 mi19994+23212466+10212466+10219306(Top 68%)12165(Top 76%)12165(Top 966%)
Half13.11 mi0.68 mi19951+4312445+2112445+2119161(Top 67%)12109(Top 75%)12109(Top 962%)
25K15.53 mi2.42 mi19759+19212359+8612359+8618948(Top 67%)11942(Top 74%)11942(Top 949%)
30K18.64 mi3.11 mi19493+26612204+15512204+15518377(Top 65%)11557(Top 72%)11557(Top 918%)
20M20.00 mi1.36 mi19345+14812112+9212112+9217593(Top 62%)11080(Top 69%)11080(Top 880%)
21M21.00 mi1.00 mi19135+21012008+10412008+10415926(Top 56%)10221(Top 63%)10221(Top 812%)
35K21.75 mi0.75 mi18997+13811923+8511923+8514991(Top 53%)9740(Top 60%)9740(Top 774%)
23M23.00 mi1.25 mi18832+16511820+10311820+10316473(Top 58%)10282(Top 64%)10282(Top 817%)
24M24.00 mi1.00 mi18803+2911792+2811792+2817780(Top 63%)10822(Top 67%)10822(Top 860%)
40K24.85 mi0.85 mi18699+10411712+8011712+8016318(Top 57%)10067(Top 63%)10067(Top 800%)
25.2M25.20 mi0.35 mi18634+6511672+4011672+4015416(Top 54%)9611(Top 60%)9611(Top 763%)
Finish26.22 mi1.02 mi18587+4711641+3111641+3117264(Top 61%)10532(Top 65%)10532(Top 837%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 69%
×21stories
+97ft-345ft

Overall

19597

Males

12320

M60-64

12320

5K→10K

3.1 - 6.2 mi

Top 72%
×5stories
+79ft-138ft

Overall

20341

Males

12625

M60-64

12625

10K→15K

6.2 - 9.3 mi

Top 69%
×3stories
+67ft-78ft

Overall

19597

Males

12320

M60-64

12320

15K→20K

9.3 - 12.4 mi

Top 68%
×5stories
+106ft-86ft

Overall

19306

Males

12165

M60-64

12165

20K→Half

12.4 - 13.1 mi

Top 67%
×2stories
+19ft-37ft

Overall

19161

Males

12109

M60-64

12109

Half→25K

13.1 - 15.5 mi

Top 67%
×4stories
+66ft-88ft

Overall

18948

Males

11942

M60-64

11942

25K→30K

15.5 - 18.6 mi

Top 65%
×9stories
+181ft-148ft

Overall

18377

Males

11557

M60-64

11557

30K→20M

18.6 - 20.0 mi

Top 62%
×5stories
+64ft-50ft

Overall

17593

Males

11080

M60-64

11080

20M→21M

20.0 - 21.0 mi

Top 56%
×8stories
+106ft-24ft

Overall

15926

Males

10221

M60-64

10221

21M→35K

21.0 - 21.8 mi

Top 53%
×7stories
+17ft-86ft

Overall

14991

Males

9740

M60-64

9740

35K→23M

21.8 - 23.0 mi

Top 58%
×5stories
+23ft-63ft

Overall

16473

Males

10282

M60-64

10282

23M→24M

23.0 - 24.0 mi

Top 63%
×6stories
+12ft-82ft

Overall

17780

Males

10822

M60-64

10822

24M→40K

24.0 - 24.9 mi

Top 57%
×1story
+6ft-20ft

Overall

16318

Males

10067

M60-64

10067

40K→25.2M

24.9 - 25.2 mi

Top 54%
×1story
+13ft-16ft

Overall

15416

Males

9611

M60-64

9611

25.2M→Finish

25.2 - 26.2 mi

Top 61%
×2stories
+22ft-21ft

Overall

17264

Males

10532

M60-64

10532

Passing Analysis

Category:
Athletes Passed
2919
Passed By
658
Net Change
+2261
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#20848
5K → 10K446171+275#20848#20573
10K → 15K39851+347#20573#20226
15K → 20K31482+232#20226#19994
20K → Half5411+43#19994#19951
Half → 25K25058+192#19951#19759
25K → 30K35488+266#19759#19493
30K → 20M17931+148#19493#19345
20M → 21M23020+210#19345#19135
21M → 35K1446+138#19135#18997
35K → 23M18520+165#18997#18832
23M → 24M7849+29#18832#18803
24M → 40K12622+104#18803#18699
40K → 25.2M727+65#18699#18634
25.2M → Finish8942+47#18634#18587
TOTALS2919658+2261
📊

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