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BOSTON MARATHON 2023

James Brennan

Bib: 9426•M

VA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 35%
Gender (Male)
#0 / 15176
Top 50%
Masters (Masters Men)
#0 / 9891
Top 39%
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
22:29
Rank: #7726
Start → 5K
22:29 | 7:14/mi
10K· 6.21 mi
44:29
Rank: #7479 (+247)
5K → 10K
22:00 | 7:05/mi
15K· 9.32 mi
1:06:59
Rank: #7664 (-185)
10K → 15K
22:30 | 7:15/mi
20K· 12.43 mi
1:29:53
Rank: #7780 (-116)
15K → 20K
22:54 | 7:22/mi
Half· 13.11 mi
1:34:57
Rank: #7861 (-81)
20K → Half
5:04 | 7:26/mi
25K· 15.53 mi
1:53:36
Rank: #8161 (-300)
Half → 25K
18:39 | 7:42/mi
30K· 18.64 mi
2:18:04
Rank: #8405 (-244)
25K → 30K
24:28 | 7:53/mi
20M
2:29:04
Rank: #8584 (-179)
30K → 20M
11:00 | 8:06/mi
21M
2:37:39
Rank: #8714 (-130)
20M → 21M
8:35 | 8:35/mi
35K· 21.75 mi
2:43:33
Rank: #8795 (-81)
21M → 35K
5:54 | 7:53/mi
23M
2:54:00
Rank: #8964 (-169)
35K → 23M
10:27 | 8:21/mi
24M
3:02:17
Rank: #9132 (-168)
23M → 24M
8:17 | 8:17/mi
40K· 24.85 mi
3:09:27
Rank: #9218 (-86)
24M → 40K
7:10 | 8:23/mi
25.2M
3:12:32
Rank: #9276 (-58)
40K → 25.2M
3:05 | 8:56/mi
Finish· 26.22 mi
3:20:41
Rank: #9374 (-98)
25.2M → Finish
8:09 | 8:00/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:34:57
Pace7:15 /mi
2nd Half
Distance13.11 mi
Time1:45:44
Pace8:04 /mi
📊Positive Split: 11.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:48:1022:297:1422:29
7:14
-
10K
6.21 mi11:10:1044:297:1022:00
7:05
-0:09
15K
9.32 mi11:32:401:06:597:1122:30
7:15
+0:10
20K
12.43 mi11:55:341:29:537:1422:54
7:22
+0:07
Half
13.11 mi12:00:381:34:577:155:04
7:26
+0:04
25K
15.53 mi12:19:171:53:367:1918:39
7:42
+0:16
30K
18.64 mi12:43:452:18:047:2424:28
7:53
+0:11
20M
20.00 mi12:54:452:29:047:2711:00
8:06
+0:13
21M
21.00 mi13:03:202:37:397:308:35
8:35
+0:29
35K
21.75 mi13:09:142:43:337:315:54
7:53
-0:42
23M
23.00 mi13:19:412:54:007:3410:27
8:21
+0:28
24M
24.00 mi13:27:583:02:177:368:17
8:17
-0:04
40K
24.85 mi13:35:083:09:277:377:10
8:23
+0:06
25.2M
25.20 mi13:38:133:12:327:383:05
8:56
+0:33
Finish
26.22 mi13:46:223:20:417:408:09
8:00
-0:56

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

7:05 /mi

Average Pace

7:40 /mi

Slowest Pace

8:56 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:34:57

47% of race

Time at Steady Pace

1:08:10

34% of race

Time at Slower Pace

37:34

19% of race

Average Pace: 7:39 /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 mi10:48:1022:297:1422:29
7:14
#7726
10K
6.21 mi11:10:1044:297:1022:00
7:05
#7479
15K
9.32 mi11:32:401:06:597:1122:30
7:15
#7664
20K
12.43 mi11:55:341:29:537:1422:54
7:22
#7780
Half
13.11 mi12:00:381:34:577:155:04
7:26
#7861
25K
15.53 mi12:19:171:53:367:1918:39
7:42
#8161
30K
18.64 mi12:43:452:18:047:2424:28
7:53
#8405
20M
20.00 mi12:54:452:29:047:2711:00
8:06
#8584
21M
21.00 mi13:03:202:37:397:308:35
8:35
#8714
35K
21.75 mi13:09:142:43:337:315:54
7:53
#8795
23M
23.00 mi13:19:412:54:007:3410:27
8:21
#8964
24M
24.00 mi13:27:583:02:177:368:17
8:17
#9132
40K
24.85 mi13:35:083:09:277:377:10
8:23
#9218
25.2M
25.20 mi13:38:133:12:327:383:05
8:56
#9276
Finish
26.22 mi13:46:223:20:417:408:09
8:00
#9374
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi7726679867988097(Top 30%)6984(Top 46%)6984(Top 312%)
10K6.21 mi3.10 mi7479+2476621+1776621+1777328(Top 28%)6479(Top 43%)6479(Top 289%)
15K9.32 mi3.11 mi7664-1856736-1156736-1158097(Top 30%)6984(Top 46%)6984(Top 312%)
20K12.43 mi3.11 mi7780-1166794-586794-588298(Top 31%)7076(Top 47%)7076(Top 316%)
Half13.11 mi0.68 mi7861-816848-546848-549573(Top 36%)7854(Top 52%)7854(Top 350%)
25K15.53 mi2.42 mi8161-3007012-1647012-16410219(Top 38%)8108(Top 53%)8108(Top 362%)
30K18.64 mi3.11 mi8405-2447127-1157127-1159930(Top 37%)7789(Top 51%)7789(Top 348%)
20M20.00 mi1.36 mi8584-1797223-967223-9610952(Top 41%)8224(Top 54%)8224(Top 367%)
21M21.00 mi1.00 mi8714-1307294-717294-7110942(Top 41%)8087(Top 53%)8087(Top 361%)
35K21.75 mi0.75 mi8795-817332-387332-3811239(Top 42%)8221(Top 54%)8221(Top 367%)
23M23.00 mi1.25 mi8964-1697400-687400-6812185(Top 46%)8541(Top 56%)8541(Top 381%)
24M24.00 mi1.00 mi9132-1687472-727472-7213126(Top 49%)8902(Top 59%)8902(Top 397%)
40K24.85 mi0.85 mi9218-867496-247496-2412555(Top 47%)8563(Top 56%)8563(Top 382%)
25.2M25.20 mi0.35 mi9276-587516-207516-2012089(Top 45%)8283(Top 55%)8283(Top 370%)
Finish26.22 mi1.02 mi9374-987555-397555-3912084(Top 45%)8319(Top 55%)8319(Top 371%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 30%
×21stories
+97ft-345ft

Overall

8097

Males

6984

M40-44

6984

5K→10K

3.1 - 6.2 mi

Top 28%
×5stories
+79ft-138ft

Overall

7328

Males

6479

M40-44

6479

10K→15K

6.2 - 9.3 mi

Top 30%
×3stories
+67ft-78ft

Overall

8097

Males

6984

M40-44

6984

15K→20K

9.3 - 12.4 mi

Top 31%
×5stories
+106ft-86ft

Overall

8298

Males

7076

M40-44

7076

20K→Half

12.4 - 13.1 mi

Top 36%
×2stories
+19ft-37ft

Overall

9573

Males

7854

M40-44

7854

Half→25K

13.1 - 15.5 mi

Top 38%
×4stories
+66ft-88ft

Overall

10219

Males

8108

M40-44

8108

25K→30K

15.5 - 18.6 mi

Top 37%
×9stories
+181ft-148ft

Overall

9930

Males

7789

M40-44

7789

30K→20M

18.6 - 20.0 mi

Top 41%
×5stories
+64ft-50ft

Overall

10952

Males

8224

M40-44

8224

20M→21M

20.0 - 21.0 mi

Top 41%
×8stories
+106ft-24ft

Overall

10942

Males

8087

M40-44

8087

21M→35K

21.0 - 21.8 mi

Top 42%
×7stories
+17ft-86ft

Overall

11239

Males

8221

M40-44

8221

35K→23M

21.8 - 23.0 mi

Top 46%
×5stories
+23ft-63ft

Overall

12185

Males

8541

M40-44

8541

23M→24M

23.0 - 24.0 mi

Top 49%
×6stories
+12ft-82ft

Overall

13126

Males

8902

M40-44

8902

24M→40K

24.0 - 24.9 mi

Top 47%
×1story
+6ft-20ft

Overall

12555

Males

8563

M40-44

8563

40K→25.2M

24.9 - 25.2 mi

Top 45%
×1story
+13ft-16ft

Overall

12089

Males

8283

M40-44

8283

25.2M→Finish

25.2 - 26.2 mi

Top 45%
×2stories
+22ft-21ft

Overall

12084

Males

8319

M40-44

8319

Passing Analysis

Category:
Athletes Passed
866
Passed By
2514
Net Change
-1648
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#7726
5K → 10K359112+247#7726#7479
10K → 15K70255-185#7479#7664
15K → 20K79195-116#7664#7780
20K → Half687-81#7780#7861
Half → 25K38338-300#7861#8161
25K → 30K83327-244#8161#8405
30K → 20M38217-179#8405#8584
20M → 21M41171-130#8584#8714
21M → 35K23104-81#8714#8795
35K → 23M33202-169#8795#8964
23M → 24M26194-168#8964#9132
24M → 40K39125-86#9132#9218
40K → 25.2M765-58#9218#9276
25.2M → Finish24122-98#9276#9374
TOTALS8662514-1648
📊

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