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BOSTON MARATHON 2023

Michael Zelwin

Bib: 1136•M

NY

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 12%
Gender (Male)
#0 / 15176
Top 20%
Division (M18-39)
#0 / 5285
Top 43%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:20
Rank: #5255
Start → 5K
6:52/mi
21:20 split
10K· 6.21 mi
42:36
Rank: #5452 (-197)
5K → 10K
6:51/mi
21:16 split
15K· 9.32 mi
1:03:45
Rank: #5352 (+100)
10K → 15K
6:48/mi
21:09 split
20K· 12.43 mi
1:24:51
Rank: #5099 (+253)
15K → 20K
6:47/mi
21:06 split
Half· 13.11 mi
1:29:28
Rank: #5097 (+2)
20K → Half
6:46/mi
4:37 split
25K· 15.53 mi
1:45:56
Rank: #4879 (+218)
Half → 25K
6:47/mi
16:28 split
30K· 18.64 mi
2:06:51
Rank: #4345 (+534)
25K → 30K
6:44/mi
20:55 split
20M
2:15:59
Rank: #4155 (+190)
30K → 20M
6:44/mi
9:08 split
21M
2:22:43
Rank: #3821 (+334)
20M → 21M
6:44/mi
6:44 split
35K· 21.75 mi
2:27:37
Rank: #3760 (+61)
21M → 35K
6:33/mi
4:54 split
23M
2:36:02
Rank: #3595 (+165)
35K → 23M
6:43/mi
8:25 split
24M
2:42:36
Rank: #3512 (+83)
23M → 24M
6:34/mi
6:34 split
40K· 24.85 mi
2:48:17
Rank: #3427 (+85)
24M → 40K
6:39/mi
5:41 split
25.2M
2:50:44
Rank: #3383 (+44)
40K → 25.2M
7:06/mi
2:27 split
Finish· 26.22 mi
2:57:18
Rank: #3276 (+107)
25.2M → Finish
6:27/mi
6:34 split

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:29:28
Pace6:49 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:27:50
Pace6:42 /mi
📊Negative Split: 1.8% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:21:5521:206:5221:20
6:52
-
10K
6.21 mi10:43:1142:366:5121:16
6:51
-0:01
15K
9.32 mi11:04:201:03:456:5021:09
6:48
-0:03
20K
12.43 mi11:25:261:24:516:5021:06
6:47
-0:01
Half
13.11 mi11:30:031:29:286:494:37
6:46
-0:01
25K
15.53 mi11:46:311:45:566:4916:28
6:47
+0:01
30K
18.64 mi12:07:262:06:516:4820:55
6:44
-0:03
20M
20.00 mi12:16:342:15:596:489:08
6:44
0:00
21M
21.00 mi12:23:182:22:436:486:44
6:44
0:00
35K
21.75 mi12:28:122:27:376:474:54
6:33
-0:11
23M
23.00 mi12:36:372:36:026:478:25
6:43
+0:10
24M
24.00 mi12:43:112:42:366:476:34
6:34
-0:09
40K
24.85 mi12:48:522:48:176:465:41
6:39
+0:05
25.2M
25.20 mi12:51:192:50:446:472:27
7:06
+0:27
Finish
26.22 mi12:57:532:57:186:466:34
6:27
-0:39

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

6:27 /mi

Average Pace

6:46 /mi

Slowest Pace

7:06 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:54:51

99% of race

Time at Steady Pace

2:27

1% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:46 /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 mi10:21:5521:206:5221:20
6:52
#5255
10K
6.21 mi10:43:1142:366:5121:16
6:51
#5452
15K
9.32 mi11:04:201:03:456:5021:09
6:48
#5352
20K
12.43 mi11:25:261:24:516:5021:06
6:47
#5099
Half
13.11 mi11:30:031:29:286:494:37
6:46
#5097
25K
15.53 mi11:46:311:45:566:4916:28
6:47
#4879
30K
18.64 mi12:07:262:06:516:4820:55
6:44
#4345
20M
20.00 mi12:16:342:15:596:489:08
6:44
#4155
21M
21.00 mi12:23:182:22:436:486:44
6:44
#3821
35K
21.75 mi12:28:122:27:376:474:54
6:33
#3760
23M
23.00 mi12:36:372:36:026:478:25
6:43
#3595
24M
24.00 mi12:43:112:42:366:476:34
6:34
#3512
40K
24.85 mi12:48:522:48:176:465:41
6:39
#3427
25.2M
25.20 mi12:51:192:50:446:472:27
7:06
#3383
Finish
26.22 mi12:57:532:57:186:466:34
6:27
#3276
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi5255486248625180(Top 19%)4788(Top 32%)4788(Top 91%)
10K6.21 mi3.10 mi5452-1975032-1705032-1705680(Top 21%)5201(Top 34%)5201(Top 98%)
15K9.32 mi3.11 mi5352+1004950+824950+825180(Top 19%)4788(Top 32%)4788(Top 91%)
20K12.43 mi3.11 mi5099+2534731+2194731+2194351(Top 16%)4061(Top 27%)4061(Top 77%)
Half13.11 mi0.68 mi5097+24728+34728+34884(Top 18%)4516(Top 30%)4516(Top 85%)
25K15.53 mi2.42 mi4879+2184535+1934535+1934051(Top 15%)3797(Top 25%)3797(Top 72%)
30K18.64 mi3.11 mi4345+5344065+4704065+4702582(Top 10%)2456(Top 16%)2456(Top 46%)
20M20.00 mi1.36 mi4155+1903898+1673898+1672409(Top 9%)2284(Top 15%)2284(Top 43%)
21M21.00 mi1.00 mi3821+3343598+3003598+3001170(Top 4%)1112(Top 7%)1112(Top 21%)
35K21.75 mi0.75 mi3760+613543+553543+552718(Top 10%)2561(Top 17%)2561(Top 48%)
23M23.00 mi1.25 mi3595+1653394+1493394+1492282(Top 9%)2153(Top 14%)2153(Top 41%)
24M24.00 mi1.00 mi3512+833318+763318+762401(Top 9%)2244(Top 15%)2244(Top 42%)
40K24.85 mi0.85 mi3427+853237+813237+812113(Top 8%)1977(Top 13%)1977(Top 37%)
25.2M25.20 mi0.35 mi3383+443195+423195+422149(Top 8%)2005(Top 13%)2005(Top 38%)
Finish26.22 mi1.02 mi3276+1073098+973098+972224(Top 8%)2064(Top 14%)2064(Top 39%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 19%
×21story building
+97ft-345ft

Overall

5180

Males

4788

M18-39

4788

5K→10K

3.1 - 6.2 mi

Top 21%
×5story building
+79ft-138ft

Overall

5680

Males

5201

M18-39

5201

10K→15K

6.2 - 9.3 mi

Top 19%
×3story building
+67ft-78ft

Overall

5180

Males

4788

M18-39

4788

15K→20K

9.3 - 12.4 mi

Top 16%
×5story building
+106ft-86ft

Overall

4351

Males

4061

M18-39

4061

20K→Half

12.4 - 13.1 mi

Top 18%
×2story building
+19ft-37ft

Overall

4884

Males

4516

M18-39

4516

Half→25K

13.1 - 15.5 mi

Top 15%
×4story building
+66ft-88ft

Overall

4051

Males

3797

M18-39

3797

25K→30K

15.5 - 18.6 mi

Top 10%
×9story building
+181ft-148ft

Overall

2582

Males

2456

M18-39

2456

30K→20M

18.6 - 20.0 mi

Top 9%
×5story building
+64ft-50ft

Overall

2409

Males

2284

M18-39

2284

20M→21M

20.0 - 21.0 mi

Top 4%
×8story building
+106ft-24ft

Overall

1170

Males

1112

M18-39

1112

21M→35K

21.0 - 21.8 mi

Top 10%
×7story building
+17ft-86ft

Overall

2718

Males

2561

M18-39

2561

35K→23M

21.8 - 23.0 mi

Top 9%
×5story building
+23ft-63ft

Overall

2282

Males

2153

M18-39

2153

23M→24M

23.0 - 24.0 mi

Top 9%
×6story building
+12ft-82ft

Overall

2401

Males

2244

M18-39

2244

24M→40K

24.0 - 24.9 mi

Top 8%
×1story
+6ft-20ft

Overall

2113

Males

1977

M18-39

1977

40K→25.2M

24.9 - 25.2 mi

Top 8%
×1story
+13ft-16ft

Overall

2149

Males

2005

M18-39

2005

25.2M→Finish

25.2 - 26.2 mi

Top 8%
×2story building
+22ft-21ft

Overall

2224

Males

2064

M18-39

2064

Passing Analysis

Category:
Athletes Passed
2466
Passed By
487
Net Change
+1979
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5255
5K → 10K120317-197#5255#5452
10K → 15K16767+100#5452#5352
15K → 20K27118+253#5352#5099
20K → Half2422+2#5099#5097
Half → 25K22911+218#5097#4879
25K → 30K5351+534#4879#4345
30K → 20M1955+190#4345#4155
20M → 21M3340+334#4155#3821
21M → 35K665+61#3821#3760
35K → 23M1749+165#3760#3595
23M → 24M9411+83#3595#3512
24M → 40K916+85#3512#3427
40K → 25.2M462+44#3427#3383
25.2M → Finish12013+107#3383#3276
TOTALS2466487+1979
📊

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