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BOSTON MARATHON 2025

Doug Kern

Bib: 21729•M

TX

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
Top 48%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
25:43
Rank: #18566
Start → 5K
25:43 | 8:17/mi
10K· 6.21 mi
52:16
Rank: #19306 (-740)
5K → 10K
26:33 | 8:33/mi
15K· 9.32 mi
1:18:21
Rank: #19057 (+249)
10K → 15K
26:05 | 8:24/mi
20K· 12.43 mi
1:44:29
Rank: #18703 (+354)
15K → 20K
26:08 | 8:25/mi
Half· 13.11 mi
1:50:13
Rank: #18681 (+22)
20K → Half
5:44 | 8:24/mi
25K· 15.53 mi
2:11:15
Rank: #18585 (+96)
Half → 25K
21:02 | 8:41/mi
30K· 18.64 mi
2:38:58
Rank: #18306 (+279)
25K → 30K
27:43 | 8:55/mi
20M
2:51:01
Rank: #18103 (+203)
30K → 20M
12:03 | 8:52/mi
21M
3:01:15
Rank: #18196 (-93)
20M → 21M
10:14 | 10:14/mi
35K· 21.75 mi
3:07:56
Rank: #18182 (+14)
21M → 35K
6:41 | 8:56/mi
23M
3:19:44
Rank: #18194 (-12)
35K → 23M
11:48 | 9:25/mi
24M
3:28:54
Rank: #18179 (+15)
23M → 24M
9:10 | 9:10/mi
40K· 24.85 mi
3:37:12
Rank: #18242 (-63)
24M → 40K
8:18 | 9:42/mi
25.2M
3:40:57
Rank: #18296 (-54)
40K → 25.2M
3:45 | 10:52/mi
Finish· 26.22 mi
3:50:11
Rank: #18353 (-57)
25.2M → Finish
9:14 | 9:04/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:50:13
Pace8:24 /mi
2nd Half
Distance13.11 mi
Time1:59:58
Pace9:09 /mi
📊Positive Split: 8.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:19:5325:438:1725:43
8:17
-
10K
6.21 mi11:46:2652:168:2526:33
8:33
+0:16
15K
9.32 mi12:12:311:18:218:2426:05
8:24
-0:09
20K
12.43 mi12:38:391:44:298:2426:08
8:25
+0:01
Half
13.11 mi12:44:231:50:138:245:44
8:24
-0:01
25K
15.53 mi13:05:252:11:158:2721:02
8:41
+0:17
30K
18.64 mi13:33:082:38:588:3227:43
8:55
+0:14
20M
20.00 mi13:45:112:51:018:3312:03
8:52
-0:03
21M
21.00 mi13:55:253:01:158:3810:14
10:14
+1:22
35K
21.75 mi14:02:063:07:568:386:41
8:56
-1:18
23M
23.00 mi14:13:543:19:448:4111:48
9:25
+0:29
24M
24.00 mi14:23:043:28:548:429:10
9:10
-0:15
40K
24.85 mi14:31:223:37:128:448:18
9:42
+0:32
25.2M
25.20 mi14:35:073:40:578:463:45
10:52
+1:10
Finish
26.22 mi14:44:213:50:118:479:14
9:04
-1:48

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

8:17 /mi

Average Pace

8:47 /mi

Slowest Pace

10:52 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:50:13

48% of race

Time at Steady Pace

1:25:53

37% of race

Time at Slower Pace

34:05

15% of race

Average Pace: 8:47 /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 mi11:19:5325:438:1725:43
8:17
#18566
10K
6.21 mi11:46:2652:168:2526:33
8:33
#19306
15K
9.32 mi12:12:311:18:218:2426:05
8:24
#19057
20K
12.43 mi12:38:391:44:298:2426:08
8:25
#18703
Half
13.11 mi12:44:231:50:138:245:44
8:24
#18681
25K
15.53 mi13:05:252:11:158:2721:02
8:41
#18585
30K
18.64 mi13:33:082:38:588:3227:43
8:55
#18306
20M
20.00 mi13:45:112:51:018:3312:03
8:52
#18103
21M
21.00 mi13:55:253:01:158:3810:14
10:14
#18196
35K
21.75 mi14:02:063:07:568:386:41
8:56
#18182
23M
23.00 mi14:13:543:19:448:4111:48
9:25
#18194
24M
24.00 mi14:23:043:28:548:429:10
9:10
#18179
40K
24.85 mi14:31:223:37:128:448:18
9:42
#18242
25.2M
25.20 mi14:35:073:40:578:463:45
10:52
#18296
Finish
26.22 mi14:44:213:50:118:479:14
9:04
#18353
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM60-64Seg. OverallSeg. MalesSeg. M60-64
5K3.11 mi3.11 mi18566118441184418666(Top 66%)11911(Top 74%)11911(Top 946%)
10K6.21 mi3.10 mi19306-74012179-33512179-33520058(Top 71%)12505(Top 78%)12505(Top 993%)
15K9.32 mi3.11 mi19057+24912059+12012059+12018666(Top 66%)11911(Top 74%)11911(Top 946%)
20K12.43 mi3.11 mi18703+35411913+14611913+14617619(Top 62%)11449(Top 71%)11449(Top 909%)
Half13.11 mi0.68 mi18681+2211904+911904+918584(Top 65%)11857(Top 74%)11857(Top 942%)
25K15.53 mi2.42 mi18585+9611847+5711847+5718229(Top 64%)11627(Top 72%)11627(Top 924%)
30K18.64 mi3.11 mi18306+27911693+15411693+15417262(Top 61%)11048(Top 69%)11048(Top 878%)
20M20.00 mi1.36 mi18103+20311575+11811575+11816039(Top 56%)10389(Top 65%)10389(Top 825%)
21M21.00 mi1.00 mi18196-9311594-1911594-1919116(Top 67%)11672(Top 72%)11672(Top 927%)
35K21.75 mi0.75 mi18182+1411569+2511569+2517907(Top 63%)11010(Top 68%)11010(Top 875%)
23M23.00 mi1.25 mi18194-1211545+2411545+2418338(Top 65%)11136(Top 69%)11136(Top 885%)
24M24.00 mi1.00 mi18179+1511514+3111514+3118165(Top 64%)10997(Top 68%)10997(Top 873%)
40K24.85 mi0.85 mi18242-6311512+211512+219492(Top 69%)11555(Top 72%)11555(Top 918%)
25.2M25.20 mi0.35 mi18296-5411523-1111523-1120217(Top 71%)11886(Top 74%)11886(Top 944%)
Finish26.22 mi1.02 mi18353-5711528-511528-519317(Top 68%)11494(Top 71%)11494(Top 913%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 66%
×21stories
+97ft-345ft

Overall

18666

Males

11911

M60-64

11911

5K→10K

3.1 - 6.2 mi

Top 71%
×5stories
+79ft-138ft

Overall

20058

Males

12505

M60-64

12505

10K→15K

6.2 - 9.3 mi

Top 66%
×3stories
+67ft-78ft

Overall

18666

Males

11911

M60-64

11911

15K→20K

9.3 - 12.4 mi

Top 62%
×5stories
+106ft-86ft

Overall

17619

Males

11449

M60-64

11449

20K→Half

12.4 - 13.1 mi

Top 65%
×2stories
+19ft-37ft

Overall

18584

Males

11857

M60-64

11857

Half→25K

13.1 - 15.5 mi

Top 64%
×4stories
+66ft-88ft

Overall

18229

Males

11627

M60-64

11627

25K→30K

15.5 - 18.6 mi

Top 61%
×9stories
+181ft-148ft

Overall

17262

Males

11048

M60-64

11048

30K→20M

18.6 - 20.0 mi

Top 56%
×5stories
+64ft-50ft

Overall

16039

Males

10389

M60-64

10389

20M→21M

20.0 - 21.0 mi

Top 67%
×8stories
+106ft-24ft

Overall

19116

Males

11672

M60-64

11672

21M→35K

21.0 - 21.8 mi

Top 63%
×7stories
+17ft-86ft

Overall

17907

Males

11010

M60-64

11010

35K→23M

21.8 - 23.0 mi

Top 65%
×5stories
+23ft-63ft

Overall

18338

Males

11136

M60-64

11136

23M→24M

23.0 - 24.0 mi

Top 64%
×6stories
+12ft-82ft

Overall

18165

Males

10997

M60-64

10997

24M→40K

24.0 - 24.9 mi

Top 69%
×1story
+6ft-20ft

Overall

19492

Males

11555

M60-64

11555

40K→25.2M

24.9 - 25.2 mi

Top 71%
×1story
+13ft-16ft

Overall

20217

Males

11886

M60-64

11886

25.2M→Finish

25.2 - 26.2 mi

Top 68%
×2stories
+22ft-21ft

Overall

19317

Males

11494

M60-64

11494

Passing Analysis

Category:
Athletes Passed
2084
Passed By
1871
Net Change
+213
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18566
5K → 10K75815-740#18566#19306
10K → 15K34192+249#19306#19057
15K → 20K39137+354#19057#18703
20K → Half5129+22#18703#18681
Half → 25K205109+96#18681#18585
25K → 30K37596+279#18585#18306
30K → 20M23633+203#18306#18103
20M → 21M67160-93#18103#18196
21M → 35K6349+14#18196#18182
35K → 23M100112-12#18182#18194
23M → 24M8368+15#18194#18179
24M → 40K48111-63#18179#18242
40K → 25.2M1266-54#18242#18296
25.2M → Finish3794-57#18296#18353
TOTALS20841871+213
📊

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