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BOSTON MARATHON 2023

Kamil Duzynski

Bib: 9913•M

NY

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 30%
Gender (Male)
#0 / 15176
Top 44%
Masters (Masters Men)
#0 / 9891
Top 32%
Division (M40-44)
#0 / 2241
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
7:22/mi
22:52
↑ 97↓ 3451.5%
10K· 6.21 mi
7:17/mi
45:29
↑ 79↓ 1380.4%
15K· 9.32 mi
7:18/mi
1:08:09
↑ 67↓ 78
20K· 12.43 mi
7:24/mi
1:31:08
↑ 106↓ 860.1%
Half· 13.11 mi
7:21/mi
1:36:09
↑ 19↓ 370.5%
25K· 15.53 mi
7:28/mi
1:54:15
↑ 66↓ 880.2%
30K· 18.64 mi
7:43/mi
2:18:14
↑ 181↓ 1480.2%
20M
7:42/mi
2:28:42
↑ 64↓ 500.2%
21M
8:07/mi
2:36:49
↑ 106↓ 241.6%
35K· 21.75 mi
7:24/mi
2:42:21
↑ 17↓ 861.7%
23M
7:39/mi
2:51:56
↑ 23↓ 630.6%
24M
7:25/mi
2:59:21
↓ 821.3%
40K· 24.85 mi
7:28/mi
3:05:44
↓ 200.3%
25.2M
8:01/mi
3:08:30
↑ 13↓ 160.2%
Finish· 26.22 mi
7:16/mi
3:15:54
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:36:09
Pace7:20 /mi
2nd Half
Distance13.11 mi
Time1:39:45
Pace7:37 /mi
📊Positive Split: 3.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:48:3022:527:2222:52
7:22
-
10K
6.21 mi11:11:0745:297:1922:37
7:17
-0:05
15K
9.32 mi11:33:471:08:097:1922:40
7:18
+0:01
20K
12.43 mi11:56:461:31:087:2022:59
7:24
+0:06
Half
13.11 mi12:01:471:36:097:205:01
7:21
-0:03
25K
15.53 mi12:19:531:54:157:2118:06
7:28
+0:07
30K
18.64 mi12:43:522:18:147:2523:59
7:43
+0:15
20M
20.00 mi12:54:202:28:427:2610:28
7:42
-0:01
21M
21.00 mi13:02:272:36:497:288:07
8:07
+0:25
35K
21.75 mi13:07:592:42:217:285:32
7:24
-0:43
23M
23.00 mi13:17:342:51:567:299:35
7:39
+0:15
24M
24.00 mi13:24:592:59:217:287:25
7:25
-0:14
40K
24.85 mi13:31:223:05:447:286:23
7:28
+0:03
25.2M
25.20 mi13:34:083:08:307:292:46
8:01
+0:33
Finish
26.22 mi13:41:323:15:547:297:24
7:16
-0:45

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

7:16 /mi

Average Pace

7:29 /mi

Slowest Pace

8:07 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:05:01

94% of race

Time at Steady Pace

10:53

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:28 /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 mi10:48:3022:527:2222:52
7:22
#8504
10K
6.21 mi11:11:0745:297:1922:37
7:17
#8576
15K
9.32 mi11:33:471:08:097:1922:40
7:18
#8541
20K
12.43 mi11:56:461:31:087:2022:59
7:24
#8495
Half
13.11 mi12:01:471:36:097:205:01
7:21
#8523
25K
15.53 mi12:19:531:54:157:2118:06
7:28
#8473
30K
18.64 mi12:43:522:18:147:2523:59
7:43
#8482
20M
20.00 mi12:54:202:28:427:2610:28
7:42
#8441
21M
21.00 mi13:02:272:36:497:288:07
8:07
#8406
35K
21.75 mi13:07:592:42:217:285:32
7:24
#8379
23M
23.00 mi13:17:342:51:567:299:35
7:39
#8278
24M
24.00 mi13:24:592:59:217:287:25
7:25
#8185
40K
24.85 mi13:31:223:05:447:286:23
7:28
#8096
25.2M
25.20 mi13:34:083:08:307:292:46
8:01
#8057
Finish
26.22 mi13:41:323:15:547:297:24
7:16
#7985
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi8504730473048507(Top 32%)7245(Top 48%)7245(Top 323%)
10K6.21 mi3.10 mi8576-727315-117315-118700(Top 33%)7383(Top 49%)7383(Top 329%)
15K9.32 mi3.11 mi8541+357294+217294+218507(Top 32%)7245(Top 48%)7245(Top 323%)
20K12.43 mi3.11 mi8495+467250+447250+448483(Top 32%)7182(Top 47%)7182(Top 320%)
Half13.11 mi0.68 mi8523-287271-217271-218954(Top 34%)7470(Top 49%)7470(Top 333%)
25K15.53 mi2.42 mi8473+507216+557216+558506(Top 32%)7136(Top 47%)7136(Top 318%)
30K18.64 mi3.11 mi8482-97179+377179+378770(Top 33%)7139(Top 47%)7139(Top 319%)
20M20.00 mi1.36 mi8441+417136+437136+438184(Top 31%)6707(Top 44%)6707(Top 299%)
21M21.00 mi1.00 mi8406+357092+447092+448092(Top 30%)6528(Top 43%)6528(Top 291%)
35K21.75 mi0.75 mi8379+277066+267066+267744(Top 29%)6340(Top 42%)6340(Top 283%)
23M23.00 mi1.25 mi8278+1016984+826984+827443(Top 28%)6084(Top 40%)6084(Top 271%)
24M24.00 mi1.00 mi8185+936902+826902+827158(Top 27%)5808(Top 38%)5808(Top 259%)
40K24.85 mi0.85 mi8096+896827+756827+756493(Top 24%)5339(Top 35%)5339(Top 238%)
25.2M25.20 mi0.35 mi8057+396794+336794+336612(Top 25%)5338(Top 35%)5338(Top 238%)
Finish26.22 mi1.02 mi7985+726729+656729+656833(Top 26%)5468(Top 36%)5468(Top 244%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 32%
×21story building
+97ft-345ft

Overall

8507

Males

7245

M40-44

7245

5K→10K

3.1 - 6.2 mi

Top 33%
×5story building
+79ft-138ft

Overall

8700

Males

7383

M40-44

7383

10K→15K

6.2 - 9.3 mi

Top 32%
×3story building
+67ft-78ft

Overall

8507

Males

7245

M40-44

7245

15K→20K

9.3 - 12.4 mi

Top 32%
×5story building
+106ft-86ft

Overall

8483

Males

7182

M40-44

7182

20K→Half

12.4 - 13.1 mi

Top 34%
×2story building
+19ft-37ft

Overall

8954

Males

7470

M40-44

7470

Half→25K

13.1 - 15.5 mi

Top 32%
×4story building
+66ft-88ft

Overall

8506

Males

7136

M40-44

7136

25K→30K

15.5 - 18.6 mi

Top 33%
×9story building
+181ft-148ft

Overall

8770

Males

7139

M40-44

7139

30K→20M

18.6 - 20.0 mi

Top 31%
×5story building
+64ft-50ft

Overall

8184

Males

6707

M40-44

6707

20M→21M

20.0 - 21.0 mi

Top 30%
×8story building
+106ft-24ft

Overall

8092

Males

6528

M40-44

6528

21M→35K

21.0 - 21.8 mi

Top 29%
×7story building
+17ft-86ft

Overall

7744

Males

6340

M40-44

6340

35K→23M

21.8 - 23.0 mi

Top 28%
×5story building
+23ft-63ft

Overall

7443

Males

6084

M40-44

6084

23M→24M

23.0 - 24.0 mi

Top 27%
×6story building
+12ft-82ft

Overall

7158

Males

5808

M40-44

5808

24M→40K

24.0 - 24.9 mi

Top 24%
×1story
+6ft-20ft

Overall

6493

Males

5339

M40-44

5339

40K→25.2M

24.9 - 25.2 mi

Top 25%
×1story
+13ft-16ft

Overall

6612

Males

5338

M40-44

5338

25.2M→Finish

25.2 - 26.2 mi

Top 26%
×2story building
+22ft-21ft

Overall

6833

Males

5468

M40-44

5468

Passing Analysis

Category:
Athletes Passed
1553
Passed By
1034
Net Change
+519
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#8504
5K → 10K209281-72#8504#8576
10K → 15K148113+35#8576#8541
15K → 20K160114+46#8541#8495
20K → Half1543-28#8495#8523
Half → 25K11868+50#8523#8473
25K → 30K155164-9#8473#8482
30K → 20M10261+41#8482#8441
20M → 21M8651+35#8441#8406
21M → 35K5528+27#8406#8379
35K → 23M13534+101#8379#8278
23M → 24M10916+93#8278#8185
24M → 40K10920+89#8185#8096
40K → 25.2M4910+39#8096#8057
25.2M → Finish10331+72#8057#7985
TOTALS15531034+519
📊

Passing Visuals

Category:
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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