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BOSTON MARATHON 2023

Brian Alexander

Bib: 9446•M

WA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 31%
Gender (Male)
#0 / 15176
Top 46%
Masters (Masters Men)
#0 / 9891
Top 33%
Division (M40-44)
#0 / 2241
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
22:34
Rank: #7881
Start → 5K
22:34 | 7:16/mi
10K· 6.21 mi
44:43
Rank: #7740 (+141)
5K → 10K
22:09 | 7:08/mi
15K· 9.32 mi
1:07:15
Rank: #7858 (-118)
10K → 15K
22:32 | 7:15/mi
20K· 12.43 mi
1:30:17
Rank: #8004 (-146)
15K → 20K
23:02 | 7:25/mi
Half· 13.11 mi
1:35:22
Rank: #8079 (-75)
20K → Half
5:05 | 7:27/mi
25K· 15.53 mi
1:53:38
Rank: #8180 (-101)
Half → 25K
18:16 | 7:32/mi
30K· 18.64 mi
2:17:41
Rank: #8254 (-74)
25K → 30K
24:03 | 7:44/mi
20M
2:28:21
Rank: #8298 (-44)
30K → 20M
10:40 | 7:51/mi
21M
2:36:34
Rank: #8306 (-8)
20M → 21M
8:13 | 8:13/mi
35K· 21.75 mi
2:42:14
Rank: #8322 (-16)
21M → 35K
5:40 | 7:34/mi
23M
2:52:04
Rank: #8321 (+1)
35K → 23M
9:50 | 7:51/mi
24M
2:59:49
Rank: #8348 (-27)
23M → 24M
7:45 | 7:45/mi
40K· 24.85 mi
3:06:30
Rank: #8339 (+9)
24M → 40K
6:41 | 7:49/mi
25.2M
3:09:22
Rank: #8313 (+26)
40K → 25.2M
2:52 | 8:19/mi
Finish· 26.22 mi
3:17:04
Rank: #8316 (-3)
25.2M → Finish
7:42 | 7:33/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:35:22
Pace7:16 /mi
2nd Half
Distance13.11 mi
Time1:41:42
Pace7:45 /mi
📊Positive Split: 6.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:48:1022:347:1622:34
7:16
-
10K
6.21 mi11:10:1944:437:1222:09
7:08
-0:08
15K
9.32 mi11:32:511:07:157:1322:32
7:15
+0:07
20K
12.43 mi11:55:531:30:177:1623:02
7:25
+0:10
Half
13.11 mi12:00:581:35:227:165:05
7:27
+0:02
25K
15.53 mi12:19:141:53:387:1918:16
7:32
+0:05
30K
18.64 mi12:43:172:17:417:2324:03
7:44
+0:12
20M
20.00 mi12:53:572:28:217:2510:40
7:51
+0:07
21M
21.00 mi13:02:102:36:347:278:13
8:13
+0:22
35K
21.75 mi13:07:502:42:147:285:40
7:34
-0:39
23M
23.00 mi13:17:402:52:047:299:50
7:51
+0:17
24M
24.00 mi13:25:252:59:497:307:45
7:45
-0:06
40K
24.85 mi13:32:063:06:307:306:41
7:49
+0:04
25.2M
25.20 mi13:34:583:09:227:312:52
8:19
+0:30
Finish
26.22 mi13:42:403:17:047:317:42
7:33
-0:46

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

7:08 /mi

Average Pace

7:31 /mi

Slowest Pace

8:19 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:45:29

84% of race

Time at Steady Pace

31:35

16% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:31 /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 mi10:48:1022:347:1622:34
7:16
#7881
10K
6.21 mi11:10:1944:437:1222:09
7:08
#7740
15K
9.32 mi11:32:511:07:157:1322:32
7:15
#7858
20K
12.43 mi11:55:531:30:177:1623:02
7:25
#8004
Half
13.11 mi12:00:581:35:227:165:05
7:27
#8079
25K
15.53 mi12:19:141:53:387:1918:16
7:32
#8180
30K
18.64 mi12:43:172:17:417:2324:03
7:44
#8254
20M
20.00 mi12:53:572:28:217:2510:40
7:51
#8298
21M
21.00 mi13:02:102:36:347:278:13
8:13
#8306
35K
21.75 mi13:07:502:42:147:285:40
7:34
#8322
23M
23.00 mi13:17:402:52:047:299:50
7:51
#8321
24M
24.00 mi13:25:252:59:497:307:45
7:45
#8348
40K
24.85 mi13:32:063:06:307:306:41
7:49
#8339
25.2M
25.20 mi13:34:583:09:227:312:52
8:19
#8313
Finish
26.22 mi13:42:403:17:047:317:42
7:33
#8316
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi7881689768978160(Top 31%)7027(Top 46%)7027(Top 314%)
10K6.21 mi3.10 mi7740+1416802+956802+957613(Top 29%)6684(Top 44%)6684(Top 298%)
15K9.32 mi3.11 mi7858-1186861-596861-598160(Top 31%)7027(Top 46%)7027(Top 314%)
20K12.43 mi3.11 mi8004-1466937-766937-768606(Top 32%)7260(Top 48%)7260(Top 324%)
Half13.11 mi0.68 mi8079-756988-516988-519738(Top 37%)7931(Top 52%)7931(Top 354%)
25K15.53 mi2.42 mi8180-1017025-377025-379009(Top 34%)7438(Top 49%)7438(Top 332%)
30K18.64 mi3.11 mi8254-747033-87033-88928(Top 34%)7238(Top 48%)7238(Top 323%)
20M20.00 mi1.36 mi8298-447037-47037-49195(Top 35%)7299(Top 48%)7299(Top 326%)
21M21.00 mi1.00 mi8306-87029+87029+88678(Top 33%)6883(Top 45%)6883(Top 307%)
35K21.75 mi0.75 mi8322-167028+17028+19047(Top 34%)7090(Top 47%)7090(Top 316%)
23M23.00 mi1.25 mi8321+17012+167012+168744(Top 33%)6825(Top 45%)6825(Top 305%)
24M24.00 mi1.00 mi8348-277006+67006+69396(Top 35%)7094(Top 47%)7094(Top 317%)
40K24.85 mi0.85 mi8339+96980+266980+268766(Top 33%)6690(Top 44%)6690(Top 299%)
25.2M25.20 mi0.35 mi8313+266954+266954+268326(Top 31%)6358(Top 42%)6358(Top 284%)
Finish26.22 mi1.02 mi8316-36931+236931+238935(Top 34%)6713(Top 44%)6713(Top 300%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 31%
×21stories
+97ft-345ft

Overall

8160

Males

7027

M40-44

7027

5K→10K

3.1 - 6.2 mi

Top 29%
×5stories
+79ft-138ft

Overall

7613

Males

6684

M40-44

6684

10K→15K

6.2 - 9.3 mi

Top 31%
×3stories
+67ft-78ft

Overall

8160

Males

7027

M40-44

7027

15K→20K

9.3 - 12.4 mi

Top 32%
×5stories
+106ft-86ft

Overall

8606

Males

7260

M40-44

7260

20K→Half

12.4 - 13.1 mi

Top 37%
×2stories
+19ft-37ft

Overall

9738

Males

7931

M40-44

7931

Half→25K

13.1 - 15.5 mi

Top 34%
×4stories
+66ft-88ft

Overall

9009

Males

7438

M40-44

7438

25K→30K

15.5 - 18.6 mi

Top 34%
×9stories
+181ft-148ft

Overall

8928

Males

7238

M40-44

7238

30K→20M

18.6 - 20.0 mi

Top 35%
×5stories
+64ft-50ft

Overall

9195

Males

7299

M40-44

7299

20M→21M

20.0 - 21.0 mi

Top 33%
×8stories
+106ft-24ft

Overall

8678

Males

6883

M40-44

6883

21M→35K

21.0 - 21.8 mi

Top 34%
×7stories
+17ft-86ft

Overall

9047

Males

7090

M40-44

7090

35K→23M

21.8 - 23.0 mi

Top 33%
×5stories
+23ft-63ft

Overall

8744

Males

6825

M40-44

6825

23M→24M

23.0 - 24.0 mi

Top 35%
×6stories
+12ft-82ft

Overall

9396

Males

7094

M40-44

7094

24M→40K

24.0 - 24.9 mi

Top 33%
×1story
+6ft-20ft

Overall

8766

Males

6690

M40-44

6690

40K→25.2M

24.9 - 25.2 mi

Top 31%
×1story
+13ft-16ft

Overall

8326

Males

6358

M40-44

6358

25.2M→Finish

25.2 - 26.2 mi

Top 34%
×2stories
+22ft-21ft

Overall

8935

Males

6713

M40-44

6713

Passing Analysis

Category:
Athletes Passed
1145
Passed By
1580
Net Change
-435
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#7881
5K → 10K306165+141#7881#7740
10K → 15K89207-118#7740#7858
15K → 20K82228-146#7858#8004
20K → Half883-75#8004#8079
Half → 25K69170-101#8079#8180
25K → 30K119193-74#8180#8254
30K → 20M60104-44#8254#8298
20M → 21M6775-8#8298#8306
21M → 35K3955-16#8306#8322
35K → 23M8685+1#8322#8321
23M → 24M5279-27#8321#8348
24M → 40K5950+9#8348#8339
40K → 25.2M4216+26#8339#8313
25.2M → Finish6770-3#8313#8316
TOTALS11451580-435
📊

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