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BOSTON MARATHON 2023

Joseph Kaszuba

Bib: 25455•M

MA

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
29:50
Rank: #22375
Start → 5K
29:50 | 9:36/mi
10K· 6.21 mi
58:01
Rank: #21842 (+533)
5K → 10K
28:11 | 9:04/mi
15K· 9.32 mi
1:26:06
Rank: #21489 (+353)
10K → 15K
28:05 | 9:02/mi
20K· 12.43 mi
1:55:18
Rank: #21436 (+53)
15K → 20K
29:12 | 9:24/mi
Half· 13.11 mi
2:01:40
Rank: #21441 (-5)
20K → Half
6:22 | 9:20/mi
25K· 15.53 mi
2:25:04
Rank: #21399 (+42)
Half → 25K
23:24 | 9:39/mi
30K· 18.64 mi
2:56:20
Rank: #21351 (+48)
25K → 30K
31:16 | 10:04/mi
20M
3:10:14
Rank: #21317 (+34)
30K → 20M
13:54 | 10:14/mi
21M
3:21:12
Rank: #21283 (+34)
20M → 21M
10:58 | 10:58/mi
35K· 21.75 mi
3:29:02
Rank: #21320 (-37)
21M → 35K
7:50 | 10:28/mi
23M
3:42:42
Rank: #21388 (-68)
35K → 23M
13:40 | 10:55/mi
24M
3:53:31
Rank: #21478 (-90)
23M → 24M
10:49 | 10:49/mi
40K· 24.85 mi
4:03:04
Rank: #21537 (-59)
24M → 40K
9:33 | 11:10/mi
25.2M
4:07:17
Rank: #21567 (-30)
40K → 25.2M
4:13 | 12:14/mi
Finish· 26.22 mi
4:18:09
Rank: #21649 (-82)
25.2M → Finish
10:52 | 10:40/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:01:40
Pace9:17 /mi
2nd Half
Distance13.11 mi
Time2:16:29
Pace10:25 /mi
📊Positive Split: 12.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:46:0029:509:3629:50
9:36
-
10K
6.21 mi12:14:1158:019:2028:11
9:04
-0:32
15K
9.32 mi12:42:161:26:069:1428:05
9:02
-0:02
20K
12.43 mi13:11:281:55:189:1729:12
9:24
+0:22
Half
13.11 mi13:17:502:01:409:176:22
9:20
-0:04
25K
15.53 mi13:41:142:25:049:2023:24
9:39
+0:19
30K
18.64 mi14:12:302:56:209:2831:16
10:04
+0:25
20M
20.00 mi14:26:243:10:149:3113:54
10:14
+0:10
21M
21.00 mi14:37:223:21:129:3510:58
10:58
+0:44
35K
21.75 mi14:45:123:29:029:377:50
10:28
-0:30
23M
23.00 mi14:58:523:42:429:4113:40
10:55
+0:27
24M
24.00 mi15:09:413:53:319:4410:49
10:49
-0:06
40K
24.85 mi15:19:144:03:049:479:33
11:10
+0:21
25.2M
25.20 mi15:23:274:07:179:494:13
12:14
+1:04
Finish
26.22 mi15:34:194:18:099:5110:52
10:40
-1:34

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

9:02 /mi

Average Pace

9:51 /mi

Slowest Pace

12:14 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:25:04

56% of race

Time at Steady Pace

1:03:52

25% of race

Time at Slower Pace

49:13

19% of race

Average Pace: 9:51 /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 mi11:46:0029:509:3629:50
9:36
#22375
10K
6.21 mi12:14:1158:019:2028:11
9:04
#21842
15K
9.32 mi12:42:161:26:069:1428:05
9:02
#21489
20K
12.43 mi13:11:281:55:189:1729:12
9:24
#21436
Half
13.11 mi13:17:502:01:409:176:22
9:20
#21441
25K
15.53 mi13:41:142:25:049:2023:24
9:39
#21399
30K
18.64 mi14:12:302:56:209:2831:16
10:04
#21351
20M
20.00 mi14:26:243:10:149:3113:54
10:14
#21317
21M
21.00 mi14:37:223:21:129:3510:58
10:58
#21283
35K
21.75 mi14:45:123:29:029:377:50
10:28
#21320
23M
23.00 mi14:58:523:42:429:4113:40
10:55
#21388
24M
24.00 mi15:09:413:53:319:4410:49
10:49
#21478
40K
24.85 mi15:19:144:03:049:479:33
11:10
#21537
25.2M
25.20 mi15:23:274:07:179:494:13
12:14
#21567
Finish
26.22 mi15:34:194:18:099:5110:52
10:40
#21649
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi22375132911329120671(Top 78%)12603(Top 83%)12603(Top 238%)
10K6.21 mi3.10 mi21842+53313056+23513056+23521158(Top 79%)12783(Top 84%)12783(Top 242%)
15K9.32 mi3.11 mi21489+35312920+13612920+13620671(Top 78%)12603(Top 83%)12603(Top 238%)
20K12.43 mi3.11 mi21436+5312900+2012900+2021242(Top 80%)12855(Top 85%)12855(Top 243%)
Half13.11 mi0.68 mi21441-512906-612906-621608(Top 81%)13013(Top 86%)13013(Top 246%)
25K15.53 mi2.42 mi21399+4212889+1712889+1721297(Top 80%)12838(Top 85%)12838(Top 243%)
30K18.64 mi3.11 mi21351+4812851+3812851+3821194(Top 80%)12717(Top 84%)12717(Top 241%)
20M20.00 mi1.36 mi21317+3412821+3012821+3021087(Top 79%)12605(Top 83%)12605(Top 239%)
21M21.00 mi1.00 mi21283+3412792+2912792+2920754(Top 78%)12407(Top 82%)12407(Top 235%)
35K21.75 mi0.75 mi21320-3712807-1512807-1522321(Top 84%)13073(Top 86%)13073(Top 247%)
23M23.00 mi1.25 mi21388-6812828-2112828-2122175(Top 83%)13001(Top 86%)13001(Top 246%)
24M24.00 mi1.00 mi21478-9012857-2912857-2922682(Top 85%)13198(Top 87%)13198(Top 250%)
40K24.85 mi0.85 mi21537-5912867-1012867-1022674(Top 85%)13162(Top 87%)13162(Top 249%)
25.2M25.20 mi0.35 mi21567-3012878-1112878-1122853(Top 86%)13251(Top 87%)13251(Top 251%)
Finish26.22 mi1.02 mi21649-8212910-3212910-3223340(Top 88%)13490(Top 89%)13490(Top 255%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 78%
×21stories
+97ft-345ft

Overall

20671

Males

12603

M18-39

12603

5K→10K

3.1 - 6.2 mi

Top 79%
×5stories
+79ft-138ft

Overall

21158

Males

12783

M18-39

12783

10K→15K

6.2 - 9.3 mi

Top 78%
×3stories
+67ft-78ft

Overall

20671

Males

12603

M18-39

12603

15K→20K

9.3 - 12.4 mi

Top 80%
×5stories
+106ft-86ft

Overall

21242

Males

12855

M18-39

12855

20K→Half

12.4 - 13.1 mi

Top 81%
×2stories
+19ft-37ft

Overall

21608

Males

13013

M18-39

13013

Half→25K

13.1 - 15.5 mi

Top 80%
×4stories
+66ft-88ft

Overall

21297

Males

12838

M18-39

12838

25K→30K

15.5 - 18.6 mi

Top 80%
×9stories
+181ft-148ft

Overall

21194

Males

12717

M18-39

12717

30K→20M

18.6 - 20.0 mi

Top 79%
×5stories
+64ft-50ft

Overall

21087

Males

12605

M18-39

12605

20M→21M

20.0 - 21.0 mi

Top 78%
×8stories
+106ft-24ft

Overall

20754

Males

12407

M18-39

12407

21M→35K

21.0 - 21.8 mi

Top 84%
×7stories
+17ft-86ft

Overall

22321

Males

13073

M18-39

13073

35K→23M

21.8 - 23.0 mi

Top 83%
×5stories
+23ft-63ft

Overall

22175

Males

13001

M18-39

13001

23M→24M

23.0 - 24.0 mi

Top 85%
×6stories
+12ft-82ft

Overall

22682

Males

13198

M18-39

13198

24M→40K

24.0 - 24.9 mi

Top 85%
×1story
+6ft-20ft

Overall

22674

Males

13162

M18-39

13162

40K→25.2M

24.9 - 25.2 mi

Top 86%
×1story
+13ft-16ft

Overall

22853

Males

13251

M18-39

13251

25.2M→Finish

25.2 - 26.2 mi

Top 88%
×2stories
+22ft-21ft

Overall

23340

Males

13490

M18-39

13490

Passing Analysis

Category:
Athletes Passed
1772
Passed By
1046
Net Change
+726
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#22375
5K → 10K61582+533#22375#21842
10K → 15K39744+353#21842#21489
15K → 20K162109+53#21489#21436
20K → Half2429-5#21436#21441
Half → 25K11068+42#21441#21399
25K → 30K150102+48#21399#21351
30K → 20M8854+34#21351#21317
20M → 21M8349+34#21317#21283
21M → 35K1653-37#21283#21320
35K → 23M50118-68#21320#21388
23M → 24M20110-90#21388#21478
24M → 40K3089-59#21478#21537
40K → 25.2M1141-30#21537#21567
25.2M → Finish1698-82#21567#21649
TOTALS17721046+726
📊

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