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BOSTON MARATHON 2023

Michal Iwanek

Bib: 32004•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Division (M45-49)
#0 / 2252
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Watch your race unfold from start to finish

Start
0:00:00
Race begins
5K· 3.11 mi
30:41
Rank: #23131
Start → 5K
30:41 | 9:53/mi
10K· 6.21 mi
1:00:39
Rank: #23065 (+66)
5K → 10K
29:58 | 9:39/mi
15K· 9.32 mi
1:30:33
Rank: #22927 (+138)
10K → 15K
29:54 | 9:37/mi
20K· 12.43 mi
2:01:04
Rank: #22776 (+151)
15K → 20K
30:31 | 9:49/mi
Half· 13.11 mi
2:07:42
Rank: #22778 (-2)
20K → Half
6:38 | 9:43/mi
25K· 15.53 mi
2:32:24
Rank: #22745 (+33)
Half → 25K
24:42 | 10:11/mi
30K· 18.64 mi
3:04:55
Rank: #22609 (+136)
25K → 30K
32:31 | 10:28/mi
20M
3:19:08
Rank: #22536 (+73)
30K → 20M
14:13 | 10:28/mi
21M
3:30:57
Rank: #22534 (+2)
20M → 21M
11:49 | 11:49/mi
35K· 21.75 mi
3:38:08
Rank: #22444 (+90)
21M → 35K
7:11 | 9:36/mi
23M
3:50:20
Rank: #22283 (+161)
35K → 23M
12:12 | 9:45/mi
24M
3:59:50
Rank: #22165 (+118)
23M → 24M
9:30 | 9:30/mi
40K· 24.85 mi
4:07:48
Rank: #22025 (+140)
24M → 40K
7:58 | 9:19/mi
25.2M
4:11:28
Rank: #21988 (+37)
40K → 25.2M
3:40 | 10:38/mi
Finish· 26.22 mi
4:21:00
Rank: #21934 (+54)
25.2M → Finish
9:32 | 9:21/mi

Course Map & Elevation

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:07:42
Pace9:44 /mi
2nd Half
Distance13.11 mi
Time2:13:18
Pace10:10 /mi
📊Positive Split: 4.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:50:3730:419:5330:41
9:53
-
10K
6.21 mi12:20:351:00:399:4629:58
9:39
-0:14
15K
9.32 mi12:50:291:30:339:4329:54
9:37
-0:02
20K
12.43 mi13:21:002:01:049:4530:31
9:49
+0:12
Half
13.11 mi13:27:382:07:429:446:38
9:43
-0:06
25K
15.53 mi13:52:202:32:249:4924:42
10:11
+0:28
30K
18.64 mi14:24:513:04:559:5532:31
10:28
+0:17
20M
20.00 mi14:39:043:19:089:5714:13
10:28
0:00
21M
21.00 mi14:50:533:30:5710:0311:49
11:49
+1:21
35K
21.75 mi14:58:043:38:0810:027:11
9:36
-2:13
23M
23.00 mi15:10:163:50:2010:0112:12
9:45
+0:09
24M
24.00 mi15:19:463:59:5010:009:30
9:30
-0:15
40K
24.85 mi15:27:444:07:489:587:58
9:19
-0:11
25.2M
25.20 mi15:31:244:11:289:593:40
10:38
+1:19
Finish
26.22 mi15:40:564:21:009:589:32
9:21
-1:17

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

9:19 /mi

Average Pace

9:58 /mi

Slowest Pace

11:49 /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

17:30

7% of race

Time at Steady Pace

2:36:35

60% of race

Time at Slower Pace

1:26:55

33% of race

Average Pace: 9:57 /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 mi11:50:3730:419:5330:41
9:53
#23131
10K
6.21 mi12:20:351:00:399:4629:58
9:39
#23065
15K
9.32 mi12:50:291:30:339:4329:54
9:37
#22927
20K
12.43 mi13:21:002:01:049:4530:31
9:49
#22776
Half
13.11 mi13:27:382:07:429:446:38
9:43
#22778
25K
15.53 mi13:52:202:32:249:4924:42
10:11
#22745
30K
18.64 mi14:24:513:04:559:5532:31
10:28
#22609
20M
20.00 mi14:39:043:19:089:5714:13
10:28
#22536
21M
21.00 mi14:50:533:30:5710:0311:49
11:49
#22534
35K
21.75 mi14:58:043:38:0810:027:11
9:36
#22444
23M
23.00 mi15:10:163:50:2010:0112:12
9:45
#22283
24M
24.00 mi15:19:463:59:5010:009:30
9:30
#22165
40K
24.85 mi15:27:444:07:489:587:58
9:19
#22025
25.2M
25.20 mi15:31:244:11:289:593:40
10:38
#21988
Finish
26.22 mi15:40:564:21:009:589:32
9:21
#21934
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi23131136481364822582(Top 85%)13442(Top 89%)13442(Top 597%)
10K6.21 mi3.10 mi23065+6613644+413644+422917(Top 86%)13600(Top 90%)13600(Top 604%)
15K9.32 mi3.11 mi22927+13813590+5413590+5422582(Top 85%)13442(Top 89%)13442(Top 597%)
20K12.43 mi3.11 mi22776+15113528+6213528+6222458(Top 84%)13378(Top 88%)13378(Top 594%)
Half13.11 mi0.68 mi22778-213524+413524+422675(Top 85%)13475(Top 89%)13475(Top 598%)
25K15.53 mi2.42 mi22745+3313494+3013494+3022575(Top 85%)13395(Top 88%)13395(Top 595%)
30K18.64 mi3.11 mi22609+13613397+9713397+9722136(Top 83%)13140(Top 87%)13140(Top 583%)
20M20.00 mi1.36 mi22536+7313357+4013357+4021635(Top 81%)12840(Top 85%)12840(Top 570%)
21M21.00 mi1.00 mi22534+213355+213355+222440(Top 84%)13172(Top 87%)13172(Top 585%)
35K21.75 mi0.75 mi22444+9013308+4713308+4720164(Top 76%)12118(Top 80%)12118(Top 538%)
23M23.00 mi1.25 mi22283+16113232+7613232+7619230(Top 72%)11671(Top 77%)11671(Top 518%)
24M24.00 mi1.00 mi22165+11813168+6413168+6419204(Top 72%)11625(Top 77%)11625(Top 516%)
40K24.85 mi0.85 mi22025+14013103+6513103+6517594(Top 66%)10849(Top 71%)10849(Top 482%)
25.2M25.20 mi0.35 mi21988+3713080+2313080+2319496(Top 73%)11704(Top 77%)11704(Top 520%)
Finish26.22 mi1.02 mi21934+5413043+3713043+3719597(Top 74%)11803(Top 78%)11803(Top 524%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 85%
×21stories
+97ft-345ft

Overall

22582

Males

13442

M45-49

13442

5K→10K

3.1 - 6.2 mi

Top 86%
×5stories
+79ft-138ft

Overall

22917

Males

13600

M45-49

13600

10K→15K

6.2 - 9.3 mi

Top 85%
×3stories
+67ft-78ft

Overall

22582

Males

13442

M45-49

13442

15K→20K

9.3 - 12.4 mi

Top 84%
×5stories
+106ft-86ft

Overall

22458

Males

13378

M45-49

13378

20K→Half

12.4 - 13.1 mi

Top 85%
×2stories
+19ft-37ft

Overall

22675

Males

13475

M45-49

13475

Half→25K

13.1 - 15.5 mi

Top 85%
×4stories
+66ft-88ft

Overall

22575

Males

13395

M45-49

13395

25K→30K

15.5 - 18.6 mi

Top 83%
×9stories
+181ft-148ft

Overall

22136

Males

13140

M45-49

13140

30K→20M

18.6 - 20.0 mi

Top 81%
×5stories
+64ft-50ft

Overall

21635

Males

12840

M45-49

12840

20M→21M

20.0 - 21.0 mi

Top 84%
×8stories
+106ft-24ft

Overall

22440

Males

13172

M45-49

13172

21M→35K

21.0 - 21.8 mi

Top 76%
×7stories
+17ft-86ft

Overall

20164

Males

12118

M45-49

12118

35K→23M

21.8 - 23.0 mi

Top 72%
×5stories
+23ft-63ft

Overall

19230

Males

11671

M45-49

11671

23M→24M

23.0 - 24.0 mi

Top 72%
×6stories
+12ft-82ft

Overall

19204

Males

11625

M45-49

11625

24M→40K

24.0 - 24.9 mi

Top 66%
×1story
+6ft-20ft

Overall

17594

Males

10849

M45-49

10849

40K→25.2M

24.9 - 25.2 mi

Top 73%
×1story
+13ft-16ft

Overall

19496

Males

11704

M45-49

11704

25.2M→Finish

25.2 - 26.2 mi

Top 74%
×2stories
+22ft-21ft

Overall

19597

Males

11803

M45-49

11803

Passing Analysis

Category:
Athletes Passed
1779
Passed By
582
Net Change
+1197
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#23131
5K → 10K251185+66#23131#23065
10K → 15K22486+138#23065#22927
15K → 20K21261+151#22927#22776
20K → Half2527-2#22776#22778
Half → 25K10976+33#22778#22745
25K → 30K18751+136#22745#22609
30K → 20M9017+73#22609#22536
20M → 21M6159+2#22536#22534
21M → 35K922+90#22534#22444
35K → 23M1643+161#22444#22283
23M → 24M1191+118#22283#22165
24M → 40K1422+140#22165#22025
40K → 25.2M381+37#22025#21988
25.2M → Finish6511+54#21988#21934
TOTALS1779582+1197
📊

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