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BOSTON MARATHON 2023

Jakub Koscik

Bib: 25481•M

0:00
0:00
/ mi
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Overall
#0 / 26622
Gender (Male)
#0 / 15176
Division (M18-39)
#0 / 5285
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
28:26
Rank: #21045
Start → 5K
28:26 | 9:09/mi
10K· 6.21 mi
55:33
Rank: #20391 (+654)
5K → 10K
27:07 | 8:44/mi
15K· 9.32 mi
1:22:35
Rank: #19918 (+473)
10K → 15K
27:02 | 8:42/mi
20K· 12.43 mi
1:49:42
Rank: #19461 (+457)
15K → 20K
27:07 | 8:44/mi
Half· 13.11 mi
1:55:41
Rank: #19462 (-1)
20K → Half
5:59 | 8:46/mi
25K· 15.53 mi
2:17:37
Rank: #19399 (+63)
Half → 25K
21:56 | 9:03/mi
30K· 18.64 mi
2:46:23
Rank: #19235 (+164)
25K → 30K
28:46 | 9:16/mi
20M
2:59:56
Rank: #19351 (-116)
30K → 20M
13:33 | 9:58/mi
21M
3:10:13
Rank: #19316 (+35)
20M → 21M
10:17 | 10:17/mi
35K· 21.75 mi
3:17:44
Rank: #19424 (-108)
21M → 35K
7:31 | 10:03/mi
23M
3:30:55
Rank: #19608 (-184)
35K → 23M
13:11 | 10:32/mi
24M
3:41:23
Rank: #19760 (-152)
23M → 24M
10:28 | 10:28/mi
40K· 24.85 mi
3:50:21
Rank: #19837 (-77)
24M → 40K
8:58 | 10:29/mi
25.2M
3:54:03
Rank: #19848 (-11)
40K → 25.2M
3:42 | 10:44/mi
Finish· 26.22 mi
4:03:45
Rank: #19870 (-22)
25.2M → Finish
9:42 | 9:31/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:55:41
Pace8:49 /mi
2nd Half
Distance13.11 mi
Time2:08:04
Pace9:46 /mi
📊Positive Split: 10.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:44:3428:269:0928:26
9:09
-
10K
6.21 mi12:11:4155:338:5627:07
8:44
-0:25
15K
9.32 mi12:38:431:22:358:5227:02
8:42
-0:02
20K
12.43 mi13:05:501:49:428:5027:07
8:44
+0:02
Half
13.11 mi13:11:491:55:418:495:59
8:46
+0:02
25K
15.53 mi13:33:452:17:378:5221:56
9:03
+0:17
30K
18.64 mi14:02:312:46:238:5628:46
9:16
+0:13
20M
20.00 mi14:16:042:59:569:0013:33
9:58
+0:42
21M
21.00 mi14:26:213:10:139:0310:17
10:17
+0:19
35K
21.75 mi14:33:523:17:449:067:31
10:03
-0:14
23M
23.00 mi14:47:033:30:559:1013:11
10:32
+0:29
24M
24.00 mi14:57:313:41:239:1310:28
10:28
-0:04
40K
24.85 mi15:06:293:50:219:168:58
10:29
+0:01
25.2M
25.20 mi15:10:113:54:039:173:42
10:44
+0:15
Finish
26.22 mi15:19:534:03:459:189:42
9:31
-1:13

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

8:42 /mi

Average Pace

9:18 /mi

Slowest Pace

10:44 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:49:11

45% of race

Time at Steady Pace

1:06:54

27% of race

Time at Slower Pace

1:07:40

28% of race

Average Pace: 9:18 /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 mi11:44:3428:269:0928:26
9:09
#21045
10K
6.21 mi12:11:4155:338:5627:07
8:44
#20391
15K
9.32 mi12:38:431:22:358:5227:02
8:42
#19918
20K
12.43 mi13:05:501:49:428:5027:07
8:44
#19461
Half
13.11 mi13:11:491:55:418:495:59
8:46
#19462
25K
15.53 mi13:33:452:17:378:5221:56
9:03
#19399
30K
18.64 mi14:02:312:46:238:5628:46
9:16
#19235
20M
20.00 mi14:16:042:59:569:0013:33
9:58
#19351
21M
21.00 mi14:26:213:10:139:0310:17
10:17
#19316
35K
21.75 mi14:33:523:17:449:067:31
10:03
#19424
23M
23.00 mi14:47:033:30:559:1013:11
10:32
#19608
24M
24.00 mi14:57:313:41:239:1310:28
10:28
#19760
40K
24.85 mi15:06:293:50:219:168:58
10:29
#19837
25.2M
25.20 mi15:10:113:54:039:173:42
10:44
#19848
Finish
26.22 mi15:19:534:03:459:189:42
9:31
#19870
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi21045126281262818979(Top 71%)11873(Top 78%)11873(Top 225%)
10K6.21 mi3.10 mi20391+65412396+23212396+23219561(Top 73%)12115(Top 80%)12115(Top 229%)
15K9.32 mi3.11 mi19918+47312209+18712209+18718979(Top 71%)11873(Top 78%)11873(Top 225%)
20K12.43 mi3.11 mi19461+45712036+17312036+17318285(Top 69%)11603(Top 76%)11603(Top 220%)
Half13.11 mi0.68 mi19462-1120361203619324(Top 73%)12030(Top 79%)12030(Top 228%)
25K15.53 mi2.42 mi19399+6312021+1512021+1519184(Top 72%)11929(Top 79%)11929(Top 226%)
30K18.64 mi3.11 mi19235+16411937+8411937+8418440(Top 69%)11538(Top 76%)11538(Top 218%)
20M20.00 mi1.36 mi19351-11611975-3811975-3820397(Top 77%)12298(Top 81%)12298(Top 233%)
21M21.00 mi1.00 mi19316+3511943+3211943+3218972(Top 71%)11631(Top 77%)11631(Top 220%)
35K21.75 mi0.75 mi19424-10811985-4211985-4221385(Top 80%)12654(Top 83%)12654(Top 239%)
23M23.00 mi1.25 mi19608-18412061-7612061-7621379(Top 80%)12630(Top 83%)12630(Top 239%)
24M24.00 mi1.00 mi19760-15212112-5112112-5121950(Top 82%)12850(Top 85%)12850(Top 243%)
40K24.85 mi0.85 mi19837-7712129-1712129-1721171(Top 80%)12441(Top 82%)12441(Top 235%)
25.2M25.20 mi0.35 mi19848-1112130-112130-119759(Top 74%)11811(Top 78%)11811(Top 223%)
Finish26.22 mi1.02 mi19870-2212133-312133-320186(Top 76%)12055(Top 79%)12055(Top 228%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 71%
×21stories
+97ft-345ft

Overall

18979

Males

11873

M18-39

11873

5K→10K

3.1 - 6.2 mi

Top 73%
×5stories
+79ft-138ft

Overall

19561

Males

12115

M18-39

12115

10K→15K

6.2 - 9.3 mi

Top 71%
×3stories
+67ft-78ft

Overall

18979

Males

11873

M18-39

11873

15K→20K

9.3 - 12.4 mi

Top 69%
×5stories
+106ft-86ft

Overall

18285

Males

11603

M18-39

11603

20K→Half

12.4 - 13.1 mi

Top 73%
×2stories
+19ft-37ft

Overall

19324

Males

12030

M18-39

12030

Half→25K

13.1 - 15.5 mi

Top 72%
×4stories
+66ft-88ft

Overall

19184

Males

11929

M18-39

11929

25K→30K

15.5 - 18.6 mi

Top 69%
×9stories
+181ft-148ft

Overall

18440

Males

11538

M18-39

11538

30K→20M

18.6 - 20.0 mi

Top 77%
×5stories
+64ft-50ft

Overall

20397

Males

12298

M18-39

12298

20M→21M

20.0 - 21.0 mi

Top 71%
×8stories
+106ft-24ft

Overall

18972

Males

11631

M18-39

11631

21M→35K

21.0 - 21.8 mi

Top 80%
×7stories
+17ft-86ft

Overall

21385

Males

12654

M18-39

12654

35K→23M

21.8 - 23.0 mi

Top 80%
×5stories
+23ft-63ft

Overall

21379

Males

12630

M18-39

12630

23M→24M

23.0 - 24.0 mi

Top 82%
×6stories
+12ft-82ft

Overall

21950

Males

12850

M18-39

12850

24M→40K

24.0 - 24.9 mi

Top 80%
×1story
+6ft-20ft

Overall

21171

Males

12441

M18-39

12441

40K→25.2M

24.9 - 25.2 mi

Top 74%
×1story
+13ft-16ft

Overall

19759

Males

11811

M18-39

11811

25.2M→Finish

25.2 - 26.2 mi

Top 76%
×2stories
+22ft-21ft

Overall

20186

Males

12055

M18-39

12055

Passing Analysis

Category:
Athletes Passed
2476
Passed By
1301
Net Change
+1175
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#21045
5K → 10K74995+654#21045#20391
10K → 15K51744+473#20391#19918
15K → 20K47518+457#19918#19461
20K → Half2930-1#19461#19462
Half → 25K14784+63#19462#19399
25K → 30K24985+164#19399#19235
30K → 20M55171-116#19235#19351
20M → 21M9661+35#19351#19316
21M → 35K18126-108#19316#19424
35K → 23M35219-184#19424#19608
23M → 24M19171-152#19608#19760
24M → 40K30107-77#19760#19837
40K → 25.2M2536-11#19837#19848
25.2M → Finish3254-22#19848#19870
TOTALS24761301+1175
📊

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