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BOSTON MARATHON 2023

Daniel Jamroz

Bib: 29628•M

MA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Division (M40-44)
#0 / 2241
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
28:26
Rank: #21044
Start → 5K
28:26 | 9:09/mi
10K· 6.21 mi
55:21
Rank: #20238 (+806)
5K → 10K
26:55 | 8:40/mi
15K· 9.32 mi
1:22:33
Rank: #19899 (+339)
10K → 15K
27:12 | 8:45/mi
20K· 12.43 mi
1:50:19
Rank: #19736 (+163)
15K → 20K
27:46 | 8:56/mi
Half· 13.11 mi
1:56:23
Rank: #19745 (-9)
20K → Half
6:04 | 8:54/mi
25K· 15.53 mi
2:18:46
Rank: #19797 (-52)
Half → 25K
22:23 | 9:14/mi
30K· 18.64 mi
2:49:51
Rank: #20108 (-311)
25K → 30K
31:05 | 10:00/mi
20M
3:03:25
Rank: #20131 (-23)
30K → 20M
13:34 | 9:59/mi
21M
3:14:08
Rank: #20135 (-4)
20M → 21M
10:43 | 10:43/mi
35K· 21.75 mi
3:21:07
Rank: #20101 (+34)
21M → 35K
6:59 | 9:20/mi
23M
3:32:59
Rank: #19981 (+120)
35K → 23M
11:52 | 9:29/mi
24M
3:42:12
Rank: #19891 (+90)
23M → 24M
9:13 | 9:13/mi
40K· 24.85 mi
3:50:11
Rank: #19822 (+69)
24M → 40K
7:59 | 9:20/mi
25.2M
3:53:39
Rank: #19789 (+33)
40K → 25.2M
3:28 | 10:03/mi
Finish· 26.22 mi
4:02:40
Rank: #19714 (+75)
25.2M → Finish
9:01 | 8:51/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:56:23
Pace8:53 /mi
2nd Half
Distance13.11 mi
Time2:06:17
Pace9:38 /mi
📊Positive Split: 8.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:46:3328:269:0928:26
9:09
-
10K
6.21 mi12:13:2855:218:5426:55
8:40
-0:29
15K
9.32 mi12:40:401:22:338:5127:12
8:45
+0:05
20K
12.43 mi13:08:261:50:198:5327:46
8:56
+0:11
Half
13.11 mi13:14:301:56:238:536:04
8:54
-0:02
25K
15.53 mi13:36:532:18:468:5622:23
9:14
+0:20
30K
18.64 mi14:07:582:49:519:0731:05
10:00
+0:46
20M
20.00 mi14:21:323:03:259:1013:34
9:59
-0:01
21M
21.00 mi14:32:153:14:089:1510:43
10:43
+0:44
35K
21.75 mi14:39:143:21:079:156:59
9:20
-1:23
23M
23.00 mi14:51:063:32:599:1611:52
9:29
+0:09
24M
24.00 mi15:00:193:42:129:169:13
9:13
-0:16
40K
24.85 mi15:08:183:50:119:167:59
9:20
+0:07
25.2M
25.20 mi15:11:463:53:399:163:28
10:03
+0:43
Finish
26.22 mi15:20:474:02:409:169:01
8:51
-1:12

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

8:40 /mi

Average Pace

9:16 /mi

Slowest Pace

10:43 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:36:58

40% of race

Time at Steady Pace

1:26:52

36% of race

Time at Slower Pace

58:50

24% of race

Average Pace: 9:15 /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 mi11:46:3328:269:0928:26
9:09
#21044
10K
6.21 mi12:13:2855:218:5426:55
8:40
#20238
15K
9.32 mi12:40:401:22:338:5127:12
8:45
#19899
20K
12.43 mi13:08:261:50:198:5327:46
8:56
#19736
Half
13.11 mi13:14:301:56:238:536:04
8:54
#19745
25K
15.53 mi13:36:532:18:468:5622:23
9:14
#19797
30K
18.64 mi14:07:582:49:519:0731:05
10:00
#20108
20M
20.00 mi14:21:323:03:259:1013:34
9:59
#20131
21M
21.00 mi14:32:153:14:089:1510:43
10:43
#20135
35K
21.75 mi14:39:143:21:079:156:59
9:20
#20101
23M
23.00 mi14:51:063:32:599:1611:52
9:29
#19981
24M
24.00 mi15:00:193:42:129:169:13
9:13
#19891
40K
24.85 mi15:08:183:50:119:167:59
9:20
#19822
25.2M
25.20 mi15:11:463:53:399:163:28
10:03
#19789
Finish
26.22 mi15:20:474:02:409:169:01
8:51
#19714
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi21044126271262719256(Top 72%)11990(Top 79%)11990(Top 535%)
10K6.21 mi3.10 mi20238+80612329+29812329+29819211(Top 72%)11985(Top 79%)11985(Top 535%)
15K9.32 mi3.11 mi19899+33912201+12812201+12819256(Top 72%)11990(Top 79%)11990(Top 535%)
20K12.43 mi3.11 mi19736+16312154+4712154+4719395(Top 73%)12053(Top 79%)12053(Top 538%)
Half13.11 mi0.68 mi19745-912166-1212166-1219932(Top 75%)12285(Top 81%)12285(Top 548%)
25K15.53 mi2.42 mi19797-5212172-612172-619953(Top 75%)12270(Top 81%)12270(Top 548%)
30K18.64 mi3.11 mi20108-31112300-12812300-12821038(Top 79%)12647(Top 83%)12647(Top 564%)
20M20.00 mi1.36 mi20131-2312289+1112289+1120429(Top 77%)12312(Top 81%)12312(Top 549%)
21M21.00 mi1.00 mi20135-412284+512284+520178(Top 76%)12135(Top 80%)12135(Top 541%)
35K21.75 mi0.75 mi20101+3412266+1812266+1819280(Top 72%)11726(Top 77%)11726(Top 523%)
23M23.00 mi1.25 mi19981+12012203+6312203+6318254(Top 69%)11238(Top 74%)11238(Top 501%)
24M24.00 mi1.00 mi19891+9012162+4112162+4118115(Top 68%)11138(Top 73%)11138(Top 497%)
40K24.85 mi0.85 mi19822+6912121+4112121+4117683(Top 66%)10887(Top 72%)10887(Top 486%)
25.2M25.20 mi0.35 mi19789+3312105+1612105+1617579(Top 66%)10836(Top 71%)10836(Top 484%)
Finish26.22 mi1.02 mi19714+7512071+3412071+3417256(Top 65%)10728(Top 71%)10728(Top 479%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 72%
×21stories
+97ft-345ft

Overall

19256

Males

11990

M40-44

11990

5K→10K

3.1 - 6.2 mi

Top 72%
×5stories
+79ft-138ft

Overall

19211

Males

11985

M40-44

11985

10K→15K

6.2 - 9.3 mi

Top 72%
×3stories
+67ft-78ft

Overall

19256

Males

11990

M40-44

11990

15K→20K

9.3 - 12.4 mi

Top 73%
×5stories
+106ft-86ft

Overall

19395

Males

12053

M40-44

12053

20K→Half

12.4 - 13.1 mi

Top 75%
×2stories
+19ft-37ft

Overall

19932

Males

12285

M40-44

12285

Half→25K

13.1 - 15.5 mi

Top 75%
×4stories
+66ft-88ft

Overall

19953

Males

12270

M40-44

12270

25K→30K

15.5 - 18.6 mi

Top 79%
×9stories
+181ft-148ft

Overall

21038

Males

12647

M40-44

12647

30K→20M

18.6 - 20.0 mi

Top 77%
×5stories
+64ft-50ft

Overall

20429

Males

12312

M40-44

12312

20M→21M

20.0 - 21.0 mi

Top 76%
×8stories
+106ft-24ft

Overall

20178

Males

12135

M40-44

12135

21M→35K

21.0 - 21.8 mi

Top 72%
×7stories
+17ft-86ft

Overall

19280

Males

11726

M40-44

11726

35K→23M

21.8 - 23.0 mi

Top 69%
×5stories
+23ft-63ft

Overall

18254

Males

11238

M40-44

11238

23M→24M

23.0 - 24.0 mi

Top 68%
×6stories
+12ft-82ft

Overall

18115

Males

11138

M40-44

11138

24M→40K

24.0 - 24.9 mi

Top 66%
×1story
+6ft-20ft

Overall

17683

Males

10887

M40-44

10887

40K→25.2M

24.9 - 25.2 mi

Top 66%
×1story
+13ft-16ft

Overall

17579

Males

10836

M40-44

10836

25.2M→Finish

25.2 - 26.2 mi

Top 65%
×2stories
+22ft-21ft

Overall

17256

Males

10728

M40-44

10728

Passing Analysis

Category:
Athletes Passed
2418
Passed By
1088
Net Change
+1330
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#21044
5K → 10K87670+806#21044#20238
10K → 15K41475+339#20238#19899
15K → 20K25996+163#19899#19736
20K → Half2534-9#19736#19745
Half → 25K96148-52#19745#19797
25K → 30K79390-311#19797#20108
30K → 20M83106-23#20108#20131
20M → 21M7074-4#20131#20135
21M → 35K5723+34#20135#20101
35K → 23M13818+120#20101#19981
23M → 24M10717+90#19981#19891
24M → 40K8112+69#19891#19822
40K → 25.2M4310+33#19822#19789
25.2M → Finish9015+75#19789#19714
TOTALS24181088+1330
📊

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