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BOSTON MARATHON 2023

Brendan Shearn

Bib: 353•M

PA

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 4%
Gender (Male)
#0 / 15176
Top 6%
Division (M18-39)
#0 / 5285
Top 15%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
17:30
Rank: #207
Start → 5K
17:30 | 5:38/mi
10K· 6.21 mi
35:21
Rank: #281 (-74)
5K → 10K
17:51 | 5:45/mi
15K· 9.32 mi
53:12
Rank: #291 (-10)
10K → 15K
17:51 | 5:45/mi
20K· 12.43 mi
1:11:14
Rank: #301 (-10)
15K → 20K
18:02 | 5:48/mi
Half· 13.11 mi
1:15:16
Rank: #310 (-9)
20K → Half
4:02 | 5:55/mi
25K· 15.53 mi
1:30:00
Rank: #338 (-28)
Half → 25K
14:44 | 6:05/mi
30K· 18.64 mi
1:50:07
Rank: #436 (-98)
25K → 30K
20:07 | 6:28/mi
20M
1:59:15
Rank: #486 (-50)
30K → 20M
9:08 | 6:43/mi
21M
2:06:41
Rank: #565 (-79)
20M → 21M
7:26 | 7:26/mi
35K· 21.75 mi
2:11:50
Rank: #619 (-54)
21M → 35K
5:09 | 6:53/mi
23M
2:20:52
Rank: #727 (-108)
35K → 23M
9:02 | 7:13/mi
24M
2:28:02
Rank: #799 (-72)
23M → 24M
7:10 | 7:10/mi
40K· 24.85 mi
2:34:09
Rank: #850 (-51)
24M → 40K
6:07 | 7:09/mi
25.2M
2:36:46
Rank: #872 (-22)
40K → 25.2M
2:37 | 7:35/mi
Finish· 26.22 mi
2:44:12
Rank: #986 (-114)
25.2M → Finish
7:26 | 7:18/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:15:16
Pace5:44 /mi
2nd Half
Distance13.11 mi
Time1:28:56
Pace6:47 /mi
📊Positive Split: 18.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:17:3817:305:3817:30
5:38
-
10K
6.21 mi10:35:2935:215:4117:51
5:45
+0:07
15K
9.32 mi10:53:2053:125:4217:51
5:45
0:00
20K
12.43 mi11:11:221:11:145:4418:02
5:48
+0:03
Half
13.11 mi11:15:241:15:165:444:02
5:55
+0:07
25K
15.53 mi11:30:081:30:005:4814:44
6:05
+0:10
30K
18.64 mi11:50:151:50:075:5420:07
6:28
+0:23
20M
20.00 mi11:59:231:59:155:589:08
6:43
+0:15
21M
21.00 mi12:06:492:06:416:027:26
7:26
+0:43
35K
21.75 mi12:11:582:11:506:045:09
6:53
-0:33
23M
23.00 mi12:21:002:20:526:079:02
7:13
+0:20
24M
24.00 mi12:28:102:28:026:107:10
7:10
-0:03
40K
24.85 mi12:34:172:34:096:126:07
7:09
-0:01
25.2M
25.20 mi12:36:542:36:466:132:37
7:35
+0:26
Finish
26.22 mi12:44:202:44:126:167:26
7:18
-0:17

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

5:38 /mi

Average Pace

6:16 /mi

Slowest Pace

7:35 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:30:00

55% of race

Time at Steady Pace

34:24

21% of race

Time at Slower Pace

39:48

24% of race

Average Pace: 6:16 /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 mi10:17:3817:305:3817:30
5:38
#207
10K
6.21 mi10:35:2935:215:4117:51
5:45
#281
15K
9.32 mi10:53:2053:125:4217:51
5:45
#291
20K
12.43 mi11:11:221:11:145:4418:02
5:48
#301
Half
13.11 mi11:15:241:15:165:444:02
5:55
#310
25K
15.53 mi11:30:081:30:005:4814:44
6:05
#338
30K
18.64 mi11:50:151:50:075:5420:07
6:28
#436
20M
20.00 mi11:59:231:59:155:589:08
6:43
#486
21M
21.00 mi12:06:492:06:416:027:26
7:26
#565
35K
21.75 mi12:11:582:11:506:045:09
6:53
#619
23M
23.00 mi12:21:002:20:526:079:02
7:13
#727
24M
24.00 mi12:28:102:28:026:107:10
7:10
#799
40K
24.85 mi12:34:172:34:096:126:07
7:09
#850
25.2M
25.20 mi12:36:542:36:466:132:37
7:35
#872
Finish
26.22 mi12:44:202:44:126:167:26
7:18
#986
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi207207207324(Top 1%)291(Top 2%)291(Top 6%)
10K6.21 mi3.10 mi281-74254-47254-47373(Top 1%)338(Top 2%)338(Top 6%)
15K9.32 mi3.11 mi291-10263-9263-9324(Top 1%)291(Top 2%)291(Top 6%)
20K12.43 mi3.11 mi301-10271-8271-8317(Top 1%)286(Top 2%)286(Top 5%)
Half13.11 mi0.68 mi310-9278-7278-7589(Top 2%)551(Top 4%)551(Top 10%)
25K15.53 mi2.42 mi338-28306-28306-28696(Top 3%)655(Top 4%)655(Top 12%)
30K18.64 mi3.11 mi436-98400-94400-941466(Top 6%)1402(Top 9%)1402(Top 27%)
20M20.00 mi1.36 mi486-50449-49449-492351(Top 9%)2227(Top 15%)2227(Top 42%)
21M21.00 mi1.00 mi565-79525-76525-764241(Top 16%)3881(Top 26%)3881(Top 73%)
35K21.75 mi0.75 mi619-54578-53578-534627(Top 17%)4192(Top 28%)4192(Top 79%)
23M23.00 mi1.25 mi727-108685-107685-1074830(Top 18%)4329(Top 29%)4329(Top 82%)
24M24.00 mi1.00 mi799-72755-70755-705512(Top 21%)4774(Top 31%)4774(Top 90%)
40K24.85 mi0.85 mi850-51804-49804-494600(Top 17%)4051(Top 27%)4051(Top 77%)
25.2M25.20 mi0.35 mi872-22826-22826-224215(Top 16%)3685(Top 24%)3685(Top 70%)
Finish26.22 mi1.02 mi986-114938-112938-1127031(Top 26%)5570(Top 37%)5570(Top 105%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 1%
×21stories
+97ft-345ft

Overall

324

Males

291

M18-39

291

5K→10K

3.1 - 6.2 mi

Top 1%
×5stories
+79ft-138ft

Overall

373

Males

338

M18-39

338

10K→15K

6.2 - 9.3 mi

Top 1%
×3stories
+67ft-78ft

Overall

324

Males

291

M18-39

291

15K→20K

9.3 - 12.4 mi

Top 1%
×5stories
+106ft-86ft

Overall

317

Males

286

M18-39

286

20K→Half

12.4 - 13.1 mi

Top 2%
×2stories
+19ft-37ft

Overall

589

Males

551

M18-39

551

Half→25K

13.1 - 15.5 mi

Top 3%
×4stories
+66ft-88ft

Overall

696

Males

655

M18-39

655

25K→30K

15.5 - 18.6 mi

Top 6%
×9stories
+181ft-148ft

Overall

1466

Males

1402

M18-39

1402

30K→20M

18.6 - 20.0 mi

Top 9%
×5stories
+64ft-50ft

Overall

2351

Males

2227

M18-39

2227

20M→21M

20.0 - 21.0 mi

Top 16%
×8stories
+106ft-24ft

Overall

4241

Males

3881

M18-39

3881

21M→35K

21.0 - 21.8 mi

Top 17%
×7stories
+17ft-86ft

Overall

4627

Males

4192

M18-39

4192

35K→23M

21.8 - 23.0 mi

Top 18%
×5stories
+23ft-63ft

Overall

4830

Males

4329

M18-39

4329

23M→24M

23.0 - 24.0 mi

Top 21%
×6stories
+12ft-82ft

Overall

5512

Males

4774

M18-39

4774

24M→40K

24.0 - 24.9 mi

Top 17%
×1story
+6ft-20ft

Overall

4600

Males

4051

M18-39

4051

40K→25.2M

24.9 - 25.2 mi

Top 16%
×1story
+13ft-16ft

Overall

4215

Males

3685

M18-39

3685

25.2M→Finish

25.2 - 26.2 mi

Top 26%
×2stories
+22ft-21ft

Overall

7031

Males

5570

M18-39

5570

Passing Analysis

Category:
Athletes Passed
28
Passed By
807
Net Change
-779
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#207
5K → 10K276-74#207#281
10K → 15K515-10#281#291
15K → 20K717-10#291#301
20K → Half09-9#301#310
Half → 25K230-28#310#338
25K → 30K3101-98#338#436
30K → 20M050-50#436#486
20M → 21M180-79#486#565
21M → 35K054-54#565#619
35K → 23M1109-108#619#727
23M → 24M173-72#727#799
24M → 40K354-51#799#850
40K → 25.2M224-22#850#872
25.2M → Finish1115-114#872#986
TOTALS28807-779
📊

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