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BOSTON MARATHON 2023

John Shaw

Bib: 9955•M

WA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 16%
Gender (Male)
#0 / 15176
Top 27%
Masters (Masters Men)
#0 / 9891
Top 13%
Division (M40-44)
#0 / 2241
Top 32%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:49
Rank: #3674
Start → 5K
20:49 | 6:42/mi
10K· 6.21 mi
41:36
Rank: #3929 (-255)
5K → 10K
20:47 | 6:41/mi
15K· 9.32 mi
1:02:28
Rank: #4040 (-111)
10K → 15K
20:52 | 6:43/mi
20K· 12.43 mi
1:23:29
Rank: #4028 (+12)
15K → 20K
21:01 | 6:46/mi
Half· 13.11 mi
1:28:00
Rank: #4011 (+17)
20K → Half
4:31 | 6:37/mi
25K· 15.53 mi
1:44:50
Rank: #4198 (-187)
Half → 25K
16:50 | 6:57/mi
30K· 18.64 mi
2:07:13
Rank: #4527 (-329)
25K → 30K
22:23 | 7:12/mi
20M
2:16:48
Rank: #4507 (+20)
30K → 20M
9:35 | 7:03/mi
21M
2:24:20
Rank: #4526 (-19)
20M → 21M
7:32 | 7:32/mi
35K· 21.75 mi
2:29:27
Rank: #4506 (+20)
21M → 35K
5:07 | 6:50/mi
23M
2:38:16
Rank: #4459 (+47)
35K → 23M
8:49 | 7:03/mi
24M
2:45:06
Rank: #4406 (+53)
23M → 24M
6:50 | 6:50/mi
40K· 24.85 mi
2:51:08
Rank: #4390 (+16)
24M → 40K
6:02 | 7:03/mi
25.2M
2:53:45
Rank: #4376 (+14)
40K → 25.2M
2:37 | 7:35/mi
Finish· 26.22 mi
3:00:45
Rank: #4361 (+15)
25.2M → Finish
7:00 | 6:52/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:28:00
Pace6:43 /mi
2nd Half
Distance13.11 mi
Time1:32:45
Pace7:05 /mi
📊Positive Split: 5.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:46:2020:496:4220:49
6:42
-
10K
6.21 mi11:07:0741:366:4220:47
6:41
-0:01
15K
9.32 mi11:27:591:02:286:4220:52
6:43
+0:02
20K
12.43 mi11:49:001:23:296:4321:01
6:46
+0:03
Half
13.11 mi11:53:311:28:006:434:31
6:37
-0:09
25K
15.53 mi12:10:211:44:506:4516:50
6:57
+0:20
30K
18.64 mi12:32:442:07:136:4922:23
7:12
+0:15
20M
20.00 mi12:42:192:16:486:509:35
7:03
-0:09
21M
21.00 mi12:49:512:24:206:527:32
7:32
+0:29
35K
21.75 mi12:54:582:29:276:525:07
6:50
-0:42
23M
23.00 mi13:03:472:38:166:538:49
7:03
+0:13
24M
24.00 mi13:10:372:45:066:536:50
6:50
-0:13
40K
24.85 mi13:16:392:51:086:536:02
7:03
+0:13
25.2M
25.20 mi13:19:162:53:456:542:37
7:35
+0:32
Finish
26.22 mi13:26:163:00:456:547:00
6:52
-0:43

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

6:37 /mi

Average Pace

6:54 /mi

Slowest Pace

7:35 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:50:36

94% of race

Time at Steady Pace

10:09

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:54 /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 mi10:46:2020:496:4220:49
6:42
#3674
10K
6.21 mi11:07:0741:366:4220:47
6:41
#3929
15K
9.32 mi11:27:591:02:286:4220:52
6:43
#4040
20K
12.43 mi11:49:001:23:296:4321:01
6:46
#4028
Half
13.11 mi11:53:311:28:006:434:31
6:37
#4011
25K
15.53 mi12:10:211:44:506:4516:50
6:57
#4198
30K
18.64 mi12:32:442:07:136:4922:23
7:12
#4527
20M
20.00 mi12:42:192:16:486:509:35
7:03
#4507
21M
21.00 mi12:49:512:24:206:527:32
7:32
#4526
35K
21.75 mi12:54:582:29:276:525:07
6:50
#4506
23M
23.00 mi13:03:472:38:166:538:49
7:03
#4459
24M
24.00 mi13:10:372:45:066:536:50
6:50
#4406
40K
24.85 mi13:16:392:51:086:536:02
7:03
#4390
25.2M
25.20 mi13:19:162:53:456:542:37
7:35
#4376
Finish
26.22 mi13:26:163:00:456:547:00
6:52
#4361
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi3674345834584286(Top 16%)4016(Top 26%)4016(Top 179%)
10K6.21 mi3.10 mi3929-2553699-2413699-2414236(Top 16%)3969(Top 26%)3969(Top 177%)
15K9.32 mi3.11 mi4040-1113800-1013800-1014286(Top 16%)4016(Top 26%)4016(Top 179%)
20K12.43 mi3.11 mi4028+123785+153785+154135(Top 16%)3879(Top 26%)3879(Top 173%)
Half13.11 mi0.68 mi4011+173769+163769+163622(Top 14%)3430(Top 23%)3430(Top 153%)
25K15.53 mi2.42 mi4198-1873936-1673936-1675224(Top 20%)4816(Top 32%)4816(Top 215%)
30K18.64 mi3.11 mi4527-3294227-2914227-2915516(Top 21%)5003(Top 33%)5003(Top 223%)
20M20.00 mi1.36 mi4507+204202+254202+254334(Top 16%)3994(Top 26%)3994(Top 178%)
21M21.00 mi1.00 mi4526-194223-214223-214736(Top 18%)4277(Top 28%)4277(Top 191%)
35K21.75 mi0.75 mi4506+204202+214202+214435(Top 17%)4053(Top 27%)4053(Top 181%)
23M23.00 mi1.25 mi4459+474159+434159+433994(Top 15%)3675(Top 24%)3675(Top 164%)
24M24.00 mi1.00 mi4406+534113+464113+463835(Top 14%)3507(Top 23%)3507(Top 156%)
40K24.85 mi0.85 mi4390+164098+154098+154136(Top 16%)3697(Top 24%)3697(Top 165%)
25.2M25.20 mi0.35 mi4376+144083+154083+154293(Top 16%)3763(Top 25%)3763(Top 168%)
Finish26.22 mi1.02 mi4361+154068+154068+154440(Top 17%)3873(Top 26%)3873(Top 173%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 16%
×21stories
+97ft-345ft

Overall

4286

Males

4016

M40-44

4016

5K→10K

3.1 - 6.2 mi

Top 16%
×5stories
+79ft-138ft

Overall

4236

Males

3969

M40-44

3969

10K→15K

6.2 - 9.3 mi

Top 16%
×3stories
+67ft-78ft

Overall

4286

Males

4016

M40-44

4016

15K→20K

9.3 - 12.4 mi

Top 16%
×5stories
+106ft-86ft

Overall

4135

Males

3879

M40-44

3879

20K→Half

12.4 - 13.1 mi

Top 14%
×2stories
+19ft-37ft

Overall

3622

Males

3430

M40-44

3430

Half→25K

13.1 - 15.5 mi

Top 20%
×4stories
+66ft-88ft

Overall

5224

Males

4816

M40-44

4816

25K→30K

15.5 - 18.6 mi

Top 21%
×9stories
+181ft-148ft

Overall

5516

Males

5003

M40-44

5003

30K→20M

18.6 - 20.0 mi

Top 16%
×5stories
+64ft-50ft

Overall

4334

Males

3994

M40-44

3994

20M→21M

20.0 - 21.0 mi

Top 18%
×8stories
+106ft-24ft

Overall

4736

Males

4277

M40-44

4277

21M→35K

21.0 - 21.8 mi

Top 17%
×7stories
+17ft-86ft

Overall

4435

Males

4053

M40-44

4053

35K→23M

21.8 - 23.0 mi

Top 15%
×5stories
+23ft-63ft

Overall

3994

Males

3675

M40-44

3675

23M→24M

23.0 - 24.0 mi

Top 14%
×6stories
+12ft-82ft

Overall

3835

Males

3507

M40-44

3507

24M→40K

24.0 - 24.9 mi

Top 16%
×1story
+6ft-20ft

Overall

4136

Males

3697

M40-44

3697

40K→25.2M

24.9 - 25.2 mi

Top 16%
×1story
+13ft-16ft

Overall

4293

Males

3763

M40-44

3763

25.2M→Finish

25.2 - 26.2 mi

Top 17%
×2stories
+22ft-21ft

Overall

4440

Males

3873

M40-44

3873

Passing Analysis

Category:
Athletes Passed
876
Passed By
1563
Net Change
-687
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#3674
5K → 10K114369-255#3674#3929
10K → 15K71182-111#3929#4040
15K → 20K117105+12#4040#4028
20K → Half269+17#4028#4011
Half → 25K32219-187#4011#4198
25K → 30K50379-329#4198#4527
30K → 20M6545+20#4527#4507
20M → 21M5675-19#4507#4526
21M → 35K4828+20#4526#4506
35K → 23M10154+47#4506#4459
23M → 24M7320+53#4459#4406
24M → 40K4731+16#4406#4390
40K → 25.2M2915+14#4390#4376
25.2M → Finish4732+15#4376#4361
TOTALS8761563-687
📊

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