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BOSTON MARATHON 2023

Michael Brennan

Bib: 27120•M

MA

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

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
9:34/mi
29:44
↑ 97↓ 3451.5%
10K· 6.21 mi
8:30/mi
56:10
↑ 79↓ 1380.4%
15K· 9.32 mi
8:23/mi
1:22:13
↑ 67↓ 78
20K· 12.43 mi
8:13/mi
1:47:46
↑ 106↓ 860.1%
Half· 13.11 mi
8:12/mi
1:53:22
↑ 19↓ 370.5%
25K· 15.53 mi
8:26/mi
2:13:48
↑ 66↓ 880.2%
30K· 18.64 mi
8:44/mi
2:40:57
↑ 181↓ 1480.2%
20M
9:07/mi
2:53:21
↑ 64↓ 500.2%
21M
9:19/mi
3:02:40
↑ 106↓ 241.6%
35K· 21.75 mi
8:24/mi
3:08:57
↑ 17↓ 861.7%
23M
8:58/mi
3:20:10
↑ 23↓ 630.6%
24M
8:56/mi
3:29:06
↓ 821.3%
40K· 24.85 mi
9:03/mi
3:36:50
↓ 200.3%
25.2M
10:12/mi
3:40:21
↑ 13↓ 160.2%
Finish· 26.22 mi
9:22/mi
3:49:54
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:53:22
Pace8:39 /mi
2nd Half
Distance13.11 mi
Time1:56:32
Pace8:53 /mi
📊Positive Split: 2.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:46:4929:449:3429:44
9:34
-
10K
6.21 mi12:13:1556:109:0226:26
8:30
-1:04
15K
9.32 mi12:39:181:22:138:4926:03
8:23
-0:07
20K
12.43 mi13:04:511:47:468:4025:33
8:13
-0:10
Half
13.11 mi13:10:271:53:228:395:36
8:12
-0:01
25K
15.53 mi13:30:532:13:488:3720:26
8:26
+0:14
30K
18.64 mi13:58:022:40:578:3827:09
8:44
+0:18
20M
20.00 mi14:10:262:53:218:4012:24
9:07
+0:23
21M
21.00 mi14:19:453:02:408:429:19
9:19
+0:12
35K
21.75 mi14:26:023:08:578:416:17
8:24
-0:55
23M
23.00 mi14:37:153:20:108:4211:13
8:58
+0:34
24M
24.00 mi14:46:113:29:068:438:56
8:56
-0:02
40K
24.85 mi14:53:553:36:508:437:44
9:03
+0:07
25.2M
25.20 mi14:57:263:40:218:453:31
10:12
+1:09
Finish
26.22 mi15:06:593:49:548:469:33
9:22
-0:50

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

8:12 /mi

Average Pace

8:46 /mi

Slowest Pace

10:12 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:50:21

48% of race

Time at Steady Pace

1:07:26

29% of race

Time at Slower Pace

52:07

23% of race

Average Pace: 8:46 /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 mi11:46:4929:449:3429:44
9:34
#22287
10K
6.21 mi12:13:1556:109:0226:26
8:30
#20800
15K
9.32 mi12:39:181:22:138:4926:03
8:23
#19706
20K
12.43 mi13:04:511:47:468:4025:33
8:13
#18643
Half
13.11 mi13:10:271:53:228:395:36
8:12
#18494
25K
15.53 mi13:30:532:13:488:3720:26
8:26
#18035
30K
18.64 mi13:58:022:40:578:3827:09
8:44
#17569
20M
20.00 mi14:10:262:53:218:4012:24
9:07
#17529
21M
21.00 mi14:19:453:02:408:429:19
9:19
#17370
35K
21.75 mi14:26:023:08:578:416:17
8:24
#17269
23M
23.00 mi14:37:153:20:108:4211:13
8:58
#17186
24M
24.00 mi14:46:113:29:068:438:56
8:56
#17165
40K
24.85 mi14:53:553:36:508:437:44
9:03
#17137
25.2M
25.20 mi14:57:263:40:218:453:31
10:12
#17169
Finish
26.22 mi15:06:593:49:548:469:33
9:22
#17323
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi22287132411324117050(Top 64%)11080(Top 73%)11080(Top 210%)
10K6.21 mi3.10 mi20800+148712579+66212579+66218295(Top 69%)11618(Top 77%)11618(Top 220%)
15K9.32 mi3.11 mi19706+109412113+46612113+46617050(Top 64%)11080(Top 73%)11080(Top 210%)
20K12.43 mi3.11 mi18643+106311723+39011723+39015117(Top 57%)10320(Top 68%)10320(Top 195%)
Half13.11 mi0.68 mi18494+14911672+5111672+5115844(Top 60%)10632(Top 70%)10632(Top 201%)
25K15.53 mi2.42 mi18035+45911460+21211460+21215750(Top 59%)10448(Top 69%)10448(Top 198%)
30K18.64 mi3.11 mi17569+46611248+21211248+21215715(Top 59%)10365(Top 68%)10365(Top 196%)
20M20.00 mi1.36 mi17529+4011212+3611212+3617181(Top 65%)10889(Top 72%)10889(Top 206%)
21M21.00 mi1.00 mi17370+15911132+8011132+8015064(Top 57%)9960(Top 66%)9960(Top 188%)
35K21.75 mi0.75 mi17269+10111084+4811084+4814703(Top 55%)9754(Top 64%)9754(Top 185%)
23M23.00 mi1.25 mi17186+8311040+4411040+4415837(Top 59%)10169(Top 67%)10169(Top 192%)
24M24.00 mi1.00 mi17165+2111009+3111009+3116911(Top 64%)10588(Top 70%)10588(Top 200%)
40K24.85 mi0.85 mi17137+2810981+2810981+2816366(Top 61%)10291(Top 68%)10291(Top 195%)
25.2M25.20 mi0.35 mi17169-3210992-1110992-1118073(Top 68%)11056(Top 73%)11056(Top 209%)
Finish26.22 mi1.02 mi17323-15411047-5511047-5519637(Top 74%)11813(Top 78%)11813(Top 224%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 64%
×21story building
+97ft-345ft

Overall

17050

Males

11080

M18-39

11080

5K→10K

3.1 - 6.2 mi

Top 69%
×5story building
+79ft-138ft

Overall

18295

Males

11618

M18-39

11618

10K→15K

6.2 - 9.3 mi

Top 64%
×3story building
+67ft-78ft

Overall

17050

Males

11080

M18-39

11080

15K→20K

9.3 - 12.4 mi

Top 57%
×5story building
+106ft-86ft

Overall

15117

Males

10320

M18-39

10320

20K→Half

12.4 - 13.1 mi

Top 60%
×2story building
+19ft-37ft

Overall

15844

Males

10632

M18-39

10632

Half→25K

13.1 - 15.5 mi

Top 59%
×4story building
+66ft-88ft

Overall

15750

Males

10448

M18-39

10448

25K→30K

15.5 - 18.6 mi

Top 59%
×9story building
+181ft-148ft

Overall

15715

Males

10365

M18-39

10365

30K→20M

18.6 - 20.0 mi

Top 65%
×5story building
+64ft-50ft

Overall

17181

Males

10889

M18-39

10889

20M→21M

20.0 - 21.0 mi

Top 57%
×8story building
+106ft-24ft

Overall

15064

Males

9960

M18-39

9960

21M→35K

21.0 - 21.8 mi

Top 55%
×7story building
+17ft-86ft

Overall

14703

Males

9754

M18-39

9754

35K→23M

21.8 - 23.0 mi

Top 59%
×5story building
+23ft-63ft

Overall

15837

Males

10169

M18-39

10169

23M→24M

23.0 - 24.0 mi

Top 64%
×6story building
+12ft-82ft

Overall

16911

Males

10588

M18-39

10588

24M→40K

24.0 - 24.9 mi

Top 61%
×1story
+6ft-20ft

Overall

16366

Males

10291

M18-39

10291

40K→25.2M

24.9 - 25.2 mi

Top 68%
×1story
+13ft-16ft

Overall

18073

Males

11056

M18-39

11056

25.2M→Finish

25.2 - 26.2 mi

Top 74%
×2story building
+22ft-21ft

Overall

19637

Males

11813

M18-39

11813

Passing Analysis

Category:
Athletes Passed
5441
Passed By
477
Net Change
+4964
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#22287
5K → 10K14925+1487#22287#20800
10K → 15K10973+1094#20800#19706
15K → 20K10641+1063#19706#18643
20K → Half1490+149#18643#18494
Half → 25K4634+459#18494#18035
25K → 30K48317+466#18035#17569
30K → 20M9858+40#17569#17529
20M → 21M18122+159#17529#17370
21M → 35K1087+101#17370#17269
35K → 23M12744+83#17269#17186
23M → 24M7150+21#17186#17165
24M → 40K6941+28#17165#17137
40K → 25.2M1648-32#17137#17169
25.2M → Finish23177-154#17169#17323
TOTALS5441477+4964
📊

Passing Visuals

Category:
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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