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BOSTON MARATHON 2025

David Krupinski

Bib: 20197•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 (M55-59)
#0 / 1648
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Watch your race unfold from start to finish

Start
0:00:00
Race begins
5K· 3.11 mi
25:59
Rank: #19081
Start → 5K
25:59 | 8:22/mi
10K· 6.21 mi
52:15
Rank: #19285 (-204)
5K → 10K
26:16 | 8:27/mi
15K· 9.32 mi
1:18:50
Rank: #19404 (-119)
10K → 15K
26:35 | 8:33/mi
20K· 12.43 mi
1:46:09
Rank: #19543 (-139)
15K → 20K
27:19 | 8:48/mi
Half· 13.11 mi
1:52:03
Rank: #19567 (-24)
20K → Half
5:54 | 8:39/mi
25K· 15.53 mi
2:13:42
Rank: #19552 (+15)
Half → 25K
21:39 | 8:56/mi
30K· 18.64 mi
2:42:23
Rank: #19375 (+177)
25K → 30K
28:41 | 9:14/mi
20M
2:54:59
Rank: #19283 (+92)
30K → 20M
12:36 | 9:16/mi
21M
3:04:41
Rank: #19143 (+140)
20M → 21M
9:42 | 9:42/mi
35K· 21.75 mi
3:11:37
Rank: #19167 (-24)
21M → 35K
6:56 | 9:16/mi
23M
3:23:23
Rank: #19119 (+48)
35K → 23M
11:46 | 9:24/mi
24M
3:32:35
Rank: #19077 (+42)
23M → 24M
9:12 | 9:12/mi
40K· 24.85 mi
3:40:33
Rank: #19003 (+74)
24M → 40K
7:58 | 9:19/mi
25.2M
3:44:00
Rank: #18978 (+25)
40K → 25.2M
3:27 | 10:00/mi
Finish· 26.22 mi
3:52:48
Rank: #18910 (+68)
25.2M → Finish
8:48 | 8:38/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:52:03
Pace8:33 /mi
2nd Half
Distance13.11 mi
Time2:00:45
Pace9:13 /mi
📊Positive Split: 7.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:17:4225:598:2225:59
8:22
-
10K
6.21 mi11:43:5852:158:2526:16
8:27
+0:05
15K
9.32 mi12:10:331:18:508:2726:35
8:33
+0:06
20K
12.43 mi12:37:521:46:098:3227:19
8:48
+0:15
Half
13.11 mi12:43:461:52:038:335:54
8:39
-0:09
25K
15.53 mi13:05:252:13:428:3621:39
8:56
+0:17
30K
18.64 mi13:34:062:42:238:4328:41
9:14
+0:18
20M
20.00 mi13:46:422:54:598:4512:36
9:16
+0:02
21M
21.00 mi13:56:243:04:418:489:42
9:42
+0:26
35K
21.75 mi14:03:203:11:378:496:56
9:16
-0:26
23M
23.00 mi14:15:063:23:238:5111:46
9:24
+0:08
24M
24.00 mi14:24:183:32:358:519:12
9:12
-0:12
40K
24.85 mi14:32:163:40:338:527:58
9:19
+0:07
25.2M
25.20 mi14:35:433:44:008:533:27
10:00
+0:41
Finish
26.22 mi14:44:313:52:488:538:48
8:38
-1:22

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

8:22 /mi

Average Pace

8:53 /mi

Slowest Pace

10:00 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Bar length shows time spent in each segment. Colors mark your faster to slower segments, relative to your own pace.

Time at Faster Pace

2:31:42

65% of race

Time at Steady Pace

1:17:39

33% of race

Time at Slower Pace

3:27

1% of race

Average Pace: 8:53 /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

Enhanced split table showing pace trends through mini sparkline visualizations.

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi11:17:4225:598:2225:59
8:22
#19081
10K
6.21 mi11:43:5852:158:2526:16
8:27
#19285
15K
9.32 mi12:10:331:18:508:2726:35
8:33
#19404
20K
12.43 mi12:37:521:46:098:3227:19
8:48
#19543
Half
13.11 mi12:43:461:52:038:335:54
8:39
#19567
25K
15.53 mi13:05:252:13:428:3621:39
8:56
#19552
30K
18.64 mi13:34:062:42:238:4328:41
9:14
#19375
20M
20.00 mi13:46:422:54:598:4512:36
9:16
#19283
21M
21.00 mi13:56:243:04:418:489:42
9:42
#19143
35K
21.75 mi14:03:203:11:378:496:56
9:16
#19167
23M
23.00 mi14:15:063:23:238:5111:46
9:24
#19119
24M
24.00 mi14:24:183:32:358:519:12
9:12
#19077
40K
24.85 mi14:32:163:40:338:527:58
9:19
#19003
25.2M
25.20 mi14:35:433:44:008:533:27
10:00
#18978
Finish
26.22 mi14:44:313:52:488:538:48
8:38
#18910
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM55-59Seg. OverallSeg. MalesSeg. M55-59
5K3.11 mi3.11 mi19081120731207319659(Top 69%)12352(Top 77%)12352(Top 750%)
10K6.21 mi3.10 mi19285-20412171-9812171-9819526(Top 69%)12281(Top 76%)12281(Top 745%)
15K9.32 mi3.11 mi19404-11912222-5112222-5119659(Top 69%)12352(Top 77%)12352(Top 750%)
20K12.43 mi3.11 mi19543-13912275-5312275-5319889(Top 70%)12408(Top 77%)12408(Top 753%)
Half13.11 mi0.68 mi19567-2412282-712282-720027(Top 71%)12468(Top 77%)12468(Top 757%)
25K15.53 mi2.42 mi19552+1512270+1212270+1219557(Top 69%)12208(Top 76%)12208(Top 741%)
30K18.64 mi3.11 mi19375+17712145+12512145+12518784(Top 66%)11735(Top 73%)11735(Top 712%)
20M20.00 mi1.36 mi19283+9212084+6112084+6118146(Top 64%)11301(Top 70%)11301(Top 686%)
21M21.00 mi1.00 mi19143+14012011+7312011+7317023(Top 60%)10713(Top 67%)10713(Top 650%)
35K21.75 mi0.75 mi19167-2412004+712004+719433(Top 68%)11700(Top 73%)11700(Top 710%)
23M23.00 mi1.25 mi19119+4811950+5411950+5418225(Top 64%)11083(Top 69%)11083(Top 673%)
24M24.00 mi1.00 mi19077+4211915+3511915+3518343(Top 65%)11082(Top 69%)11082(Top 672%)
40K24.85 mi0.85 mi19003+7411848+6711848+6717920(Top 63%)10787(Top 67%)10787(Top 655%)
25.2M25.20 mi0.35 mi18978+2511828+2011828+2017024(Top 60%)10389(Top 65%)10389(Top 630%)
Finish26.22 mi1.02 mi18910+6811779+4911779+4917064(Top 60%)10429(Top 65%)10429(Top 633%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 69%
×21stories
+97ft-345ft

Overall

19659

Males

12352

M55-59

12352

5K→10K

3.1 - 6.2 mi

Top 69%
×5stories
+79ft-138ft

Overall

19526

Males

12281

M55-59

12281

10K→15K

6.2 - 9.3 mi

Top 69%
×3stories
+67ft-78ft

Overall

19659

Males

12352

M55-59

12352

15K→20K

9.3 - 12.4 mi

Top 70%
×5stories
+106ft-86ft

Overall

19889

Males

12408

M55-59

12408

20K→Half

12.4 - 13.1 mi

Top 71%
×2stories
+19ft-37ft

Overall

20027

Males

12468

M55-59

12468

Half→25K

13.1 - 15.5 mi

Top 69%
×4stories
+66ft-88ft

Overall

19557

Males

12208

M55-59

12208

25K→30K

15.5 - 18.6 mi

Top 66%
×9stories
+181ft-148ft

Overall

18784

Males

11735

M55-59

11735

30K→20M

18.6 - 20.0 mi

Top 64%
×5stories
+64ft-50ft

Overall

18146

Males

11301

M55-59

11301

20M→21M

20.0 - 21.0 mi

Top 60%
×8stories
+106ft-24ft

Overall

17023

Males

10713

M55-59

10713

21M→35K

21.0 - 21.8 mi

Top 68%
×7stories
+17ft-86ft

Overall

19433

Males

11700

M55-59

11700

35K→23M

21.8 - 23.0 mi

Top 64%
×5stories
+23ft-63ft

Overall

18225

Males

11083

M55-59

11083

23M→24M

23.0 - 24.0 mi

Top 65%
×6stories
+12ft-82ft

Overall

18343

Males

11082

M55-59

11082

24M→40K

24.0 - 24.9 mi

Top 63%
×1story
+6ft-20ft

Overall

17920

Males

10787

M55-59

10787

40K→25.2M

24.9 - 25.2 mi

Top 60%
×1story
+13ft-16ft

Overall

17024

Males

10389

M55-59

10389

25.2M→Finish

25.2 - 26.2 mi

Top 60%
×2stories
+22ft-21ft

Overall

17064

Males

10429

M55-59

10429

Passing Analysis

Category:
Athletes Passed
1784
Passed By
1613
Net Change
+171
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#19081
5K → 10K171375-204#19081#19285
10K → 15K147266-119#19285#19404
15K → 20K157296-139#19404#19543
20K → Half2751-24#19543#19567
Half → 25K169154+15#19567#19552
25K → 30K299122+177#19552#19375
30K → 20M14856+92#19375#19283
20M → 21M17434+140#19283#19143
21M → 35K4872-24#19143#19167
35K → 23M10961+48#19167#19119
23M → 24M8846+42#19119#19077
24M → 40K10935+74#19077#19003
40K → 25.2M4116+25#19003#18978
25.2M → Finish9729+68#18978#18910
TOTALS17841613+171
📊

Passing Visuals

Category:

📈Position Graph

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🎨Heatmap Timeline

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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