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BOSTON MARATHON 2023

David Brown

Bib: 8525•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 6%
Gender (Male)
#0 / 15176
Top 11%
Masters (Masters Men)
#0 / 9891
Top 3%
Division (M40-44)
#0 / 2241
Top 9%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
19:56
Rank: #1876
Start → 5K
19:56 | 6:25/mi
10K· 6.21 mi
39:41
Rank: #1922 (-46)
5K → 10K
19:45 | 6:21/mi
15K· 9.32 mi
59:28
Rank: #1920 (+2)
10K → 15K
19:47 | 6:22/mi
20K· 12.43 mi
1:19:29
Rank: #1918 (+2)
15K → 20K
20:01 | 6:27/mi
Half· 13.11 mi
1:23:50
Rank: #1919 (-1)
20K → Half
4:21 | 6:23/mi
25K· 15.53 mi
1:39:35
Rank: #1932 (-13)
Half → 25K
15:45 | 6:30/mi
30K· 18.64 mi
2:00:13
Rank: #1959 (-27)
25K → 30K
20:38 | 6:38/mi
20M
2:09:11
Rank: #1931 (+28)
30K → 20M
8:58 | 6:36/mi
21M
2:15:59
Rank: #1888 (+43)
20M → 21M
6:48 | 6:48/mi
35K· 21.75 mi
2:20:40
Rank: #1860 (+28)
21M → 35K
4:41 | 6:16/mi
23M
2:28:54
Rank: #1827 (+33)
35K → 23M
8:14 | 6:35/mi
24M
2:35:20
Rank: #1796 (+31)
23M → 24M
6:26 | 6:26/mi
40K· 24.85 mi
2:40:49
Rank: #1750 (+46)
24M → 40K
5:29 | 6:25/mi
25.2M
2:43:09
Rank: #1731 (+19)
40K → 25.2M
2:20 | 6:46/mi
Finish· 26.22 mi
2:49:22
Rank: #1673 (+58)
25.2M → Finish
6:13 | 6:06/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:23:50
Pace6:24 /mi
2nd Half
Distance13.11 mi
Time1:25:32
Pace6:31 /mi
📊Positive Split: 2.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:45:0119:566:2519:56
6:25
-
10K
6.21 mi11:04:4639:416:2319:45
6:21
-0:04
15K
9.32 mi11:24:3359:286:2319:47
6:22
+0:01
20K
12.43 mi11:44:341:19:296:2420:01
6:27
+0:05
Half
13.11 mi11:48:551:23:506:244:21
6:23
-0:04
25K
15.53 mi12:04:401:39:356:2515:45
6:30
+0:07
30K
18.64 mi12:25:182:00:136:2720:38
6:38
+0:08
20M
20.00 mi12:34:162:09:116:288:58
6:36
-0:02
21M
21.00 mi12:41:042:15:596:296:48
6:48
+0:12
35K
21.75 mi12:45:452:20:406:284:41
6:16
-0:32
23M
23.00 mi12:53:592:28:546:288:14
6:35
+0:19
24M
24.00 mi13:00:252:35:206:286:26
6:26
-0:09
40K
24.85 mi13:05:542:40:496:285:29
6:25
-0:01
25.2M
25.20 mi13:08:142:43:096:282:20
6:46
+0:21
Finish
26.22 mi13:14:272:49:226:286:13
6:06
-0:40

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

6:06 /mi

Average Pace

6:28 /mi

Slowest Pace

6:48 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:40:14

95% of race

Time at Steady Pace

9:08

5% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:28 /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 mi10:45:0119:566:2519:56
6:25
#1876
10K
6.21 mi11:04:4639:416:2319:45
6:21
#1922
15K
9.32 mi11:24:3359:286:2319:47
6:22
#1920
20K
12.43 mi11:44:341:19:296:2420:01
6:27
#1918
Half
13.11 mi11:48:551:23:506:244:21
6:23
#1919
25K
15.53 mi12:04:401:39:356:2515:45
6:30
#1932
30K
18.64 mi12:25:182:00:136:2720:38
6:38
#1959
20M
20.00 mi12:34:162:09:116:288:58
6:36
#1931
21M
21.00 mi12:41:042:15:596:296:48
6:48
#1888
35K
21.75 mi12:45:452:20:406:284:41
6:16
#1860
23M
23.00 mi12:53:592:28:546:288:14
6:35
#1827
24M
24.00 mi13:00:252:35:206:286:26
6:26
#1796
40K
24.85 mi13:05:542:40:496:285:29
6:25
#1750
25.2M
25.20 mi13:08:142:43:096:282:20
6:46
#1731
Finish
26.22 mi13:14:272:49:226:286:13
6:06
#1673
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi1876178917891942(Top 7%)1860(Top 12%)1860(Top 83%)
10K6.21 mi3.10 mi1922-461839-501839-502013(Top 8%)1924(Top 13%)1924(Top 86%)
15K9.32 mi3.11 mi1920+21838+11838+11942(Top 7%)1860(Top 12%)1860(Top 83%)
20K12.43 mi3.11 mi1918+21837+11837+11996(Top 7%)1915(Top 13%)1915(Top 85%)
Half13.11 mi0.68 mi1919-11838-11838-12074(Top 8%)1990(Top 13%)1990(Top 89%)
25K15.53 mi2.42 mi1932-131850-121850-122137(Top 8%)2050(Top 14%)2050(Top 91%)
30K18.64 mi3.11 mi1959-271876-261876-262138(Top 8%)2041(Top 13%)2041(Top 91%)
20M20.00 mi1.36 mi1931+281849+271849+271829(Top 7%)1742(Top 11%)1742(Top 78%)
21M21.00 mi1.00 mi1888+431806+431806+431402(Top 5%)1336(Top 9%)1336(Top 60%)
35K21.75 mi0.75 mi1860+281779+271779+271439(Top 5%)1365(Top 9%)1365(Top 61%)
23M23.00 mi1.25 mi1827+331748+311748+311686(Top 6%)1600(Top 11%)1600(Top 71%)
24M24.00 mi1.00 mi1796+311717+311717+311800(Top 7%)1696(Top 11%)1696(Top 76%)
40K24.85 mi0.85 mi1750+461672+451672+451246(Top 5%)1174(Top 8%)1174(Top 52%)
25.2M25.20 mi0.35 mi1731+191654+181654+181079(Top 4%)1026(Top 7%)1026(Top 46%)
Finish26.22 mi1.02 mi1673+581597+571597+57986(Top 4%)940(Top 6%)940(Top 42%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 7%
×21stories
+97ft-345ft

Overall

1942

Males

1860

M40-44

1860

5K→10K

3.1 - 6.2 mi

Top 8%
×5stories
+79ft-138ft

Overall

2013

Males

1924

M40-44

1924

10K→15K

6.2 - 9.3 mi

Top 7%
×3stories
+67ft-78ft

Overall

1942

Males

1860

M40-44

1860

15K→20K

9.3 - 12.4 mi

Top 7%
×5stories
+106ft-86ft

Overall

1996

Males

1915

M40-44

1915

20K→Half

12.4 - 13.1 mi

Top 8%
×2stories
+19ft-37ft

Overall

2074

Males

1990

M40-44

1990

Half→25K

13.1 - 15.5 mi

Top 8%
×4stories
+66ft-88ft

Overall

2137

Males

2050

M40-44

2050

25K→30K

15.5 - 18.6 mi

Top 8%
×9stories
+181ft-148ft

Overall

2138

Males

2041

M40-44

2041

30K→20M

18.6 - 20.0 mi

Top 7%
×5stories
+64ft-50ft

Overall

1829

Males

1742

M40-44

1742

20M→21M

20.0 - 21.0 mi

Top 5%
×8stories
+106ft-24ft

Overall

1402

Males

1336

M40-44

1336

21M→35K

21.0 - 21.8 mi

Top 5%
×7stories
+17ft-86ft

Overall

1439

Males

1365

M40-44

1365

35K→23M

21.8 - 23.0 mi

Top 6%
×5stories
+23ft-63ft

Overall

1686

Males

1600

M40-44

1600

23M→24M

23.0 - 24.0 mi

Top 7%
×6stories
+12ft-82ft

Overall

1800

Males

1696

M40-44

1696

24M→40K

24.0 - 24.9 mi

Top 5%
×1story
+6ft-20ft

Overall

1246

Males

1174

M40-44

1174

40K→25.2M

24.9 - 25.2 mi

Top 4%
×1story
+13ft-16ft

Overall

1079

Males

1026

M40-44

1026

25.2M→Finish

25.2 - 26.2 mi

Top 4%
×2stories
+22ft-21ft

Overall

986

Males

940

M40-44

940

Passing Analysis

Category:
Athletes Passed
659
Passed By
456
Net Change
+203
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#1876
5K → 10K81127-46#1876#1922
10K → 15K6462+2#1922#1920
15K → 20K5654+2#1920#1918
20K → Half1314-1#1918#1919
Half → 25K3245-13#1919#1932
25K → 30K5077-27#1932#1959
30K → 20M4416+28#1959#1931
20M → 21M5310+43#1931#1888
21M → 35K346+28#1888#1860
35K → 23M5017+33#1860#1827
23M → 24M4110+31#1827#1796
24M → 40K526+46#1796#1750
40K → 25.2M212+19#1750#1731
25.2M → Finish6810+58#1731#1673
TOTALS659456+203
📊

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