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BOSTON MARATHON 2023

Kelly Brennan

Bib: 26749•F

MA

0:00
0:00
/ mi
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Division (F18-39)
#0 / 4884
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
32:53
Rank: #24919
Start → 5K
32:53 | 10:35/mi
10K· 6.21 mi
1:03:25
Rank: #24074 (+845)
5K → 10K
30:32 | 9:50/mi
15K· 9.32 mi
1:34:25
Rank: #23867 (+207)
10K → 15K
31:00 | 9:59/mi
20K· 12.43 mi
2:08:07
Rank: #24033 (-166)
15K → 20K
33:42 | 10:51/mi
Half· 13.11 mi
2:15:11
Rank: #24021 (+12)
20K → Half
7:04 | 10:21/mi
25K· 15.53 mi
2:44:36
Rank: #24346 (-325)
Half → 25K
29:25 | 12:08/mi
30K· 18.64 mi
3:26:40
Rank: #24820 (-474)
25K → 30K
42:04 | 13:32/mi
20M
3:44:53
Rank: #24900 (-80)
30K → 20M
18:13 | 13:24/mi
21M
3:58:10
Rank: #24876 (+24)
20M → 21M
13:17 | 13:17/mi
35K· 21.75 mi
4:06:30
Rank: #24833 (+43)
21M → 35K
8:20 | 11:08/mi
23M
4:22:25
Rank: #24867 (-34)
35K → 23M
15:55 | 12:43/mi
24M
4:34:49
Rank: #24888 (-21)
23M → 24M
12:24 | 12:24/mi
40K· 24.85 mi
4:46:59
Rank: #24970 (-82)
24M → 40K
12:10 | 14:14/mi
25.2M
4:51:34
Rank: #24975 (-5)
40K → 25.2M
4:35 | 13:17/mi
Finish· 26.22 mi
5:02:24
Rank: #24928 (+47)
25.2M → Finish
10:50 | 10:38/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:15:11
Pace10:19 /mi
2nd Half
Distance13.11 mi
Time2:47:13
Pace12:45 /mi
📊Positive Split: 23.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:49:4332:5310:3532:53
10:35
-
10K
6.21 mi12:20:151:03:2510:1230:32
9:50
-0:45
15K
9.32 mi12:51:151:34:2510:0831:00
9:59
+0:09
20K
12.43 mi13:24:572:08:0710:1933:42
10:51
+0:52
Half
13.11 mi13:32:012:15:1110:197:04
10:21
-0:30
25K
15.53 mi14:01:262:44:3610:3629:25
12:08
+1:47
30K
18.64 mi14:43:303:26:4011:0542:04
13:32
+1:24
20M
20.00 mi15:01:433:44:5311:1518:13
13:24
-0:08
21M
21.00 mi15:15:003:58:1011:2013:17
13:17
-0:07
35K
21.75 mi15:23:204:06:3011:208:20
11:08
-2:09
23M
23.00 mi15:39:154:22:2511:2515:55
12:43
+1:35
24M
24.00 mi15:51:394:34:4911:2712:24
12:24
-0:19
40K
24.85 mi16:03:494:46:5911:3312:10
14:14
+1:50
25.2M
25.20 mi16:08:244:51:3411:344:35
13:17
-0:57
Finish
26.22 mi16:19:145:02:2411:3310:50
10:38
-2:39

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

9:50 /mi

Average Pace

11:33 /mi

Slowest Pace

14:14 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:34:21

51% of race

Time at Steady Pace

57:44

19% of race

Time at Slower Pace

1:30:19

30% of race

Average Pace: 11:32 /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 mi11:49:4332:5310:3532:53
10:35
#24919
10K
6.21 mi12:20:151:03:2510:1230:32
9:50
#24074
15K
9.32 mi12:51:151:34:2510:0831:00
9:59
#23867
20K
12.43 mi13:24:572:08:0710:1933:42
10:51
#24033
Half
13.11 mi13:32:012:15:1110:197:04
10:21
#24021
25K
15.53 mi14:01:262:44:3610:3629:25
12:08
#24346
30K
18.64 mi14:43:303:26:4011:0542:04
13:32
#24820
20M
20.00 mi15:01:433:44:5311:1518:13
13:24
#24900
21M
21.00 mi15:15:003:58:1011:2013:17
13:17
#24876
35K
21.75 mi15:23:204:06:3011:208:20
11:08
#24833
23M
23.00 mi15:39:154:22:2511:2515:55
12:43
#24867
24M
24.00 mi15:51:394:34:4911:2712:24
12:24
#24888
40K
24.85 mi16:03:494:46:5911:3312:10
14:14
#24970
25.2M
25.20 mi16:08:244:51:3411:344:35
13:17
#24975
Finish
26.22 mi16:19:145:02:2411:3310:50
10:38
#24928
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi24919103961039623468(Top 88%)9593(Top 84%)9593(Top 196%)
10K6.21 mi3.10 mi24074+8459936+4609936+46023338(Top 88%)9534(Top 83%)9534(Top 195%)
15K9.32 mi3.11 mi23867+2079815+1219815+12123468(Top 88%)9593(Top 84%)9593(Top 196%)
20K12.43 mi3.11 mi24033-1669911-969911-9624392(Top 92%)10146(Top 89%)10146(Top 208%)
Half13.11 mi0.68 mi24021+129908+39908+323969(Top 90%)9905(Top 87%)9905(Top 203%)
25K15.53 mi2.42 mi24346-32510100-19210100-19225266(Top 95%)10665(Top 93%)10665(Top 218%)
30K18.64 mi3.11 mi24820-47410383-28310383-28325775(Top 97%)10988(Top 96%)10988(Top 225%)
20M20.00 mi1.36 mi24900-8010441-5810441-5825474(Top 96%)10845(Top 95%)10845(Top 222%)
21M21.00 mi1.00 mi24876+2410436+510436+524379(Top 92%)10287(Top 90%)10287(Top 211%)
35K21.75 mi0.75 mi24833+4310416+2010416+2023567(Top 89%)9919(Top 87%)9919(Top 203%)
23M23.00 mi1.25 mi24867-3410442-2610442-2624814(Top 93%)10540(Top 92%)10540(Top 216%)
24M24.00 mi1.00 mi24888-2110469-2710469-2724951(Top 94%)10651(Top 93%)10651(Top 218%)
40K24.85 mi0.85 mi24970-8210515-4610515-4625815(Top 97%)11083(Top 97%)11083(Top 227%)
25.2M25.20 mi0.35 mi24975-510519-410519-424322(Top 91%)10343(Top 91%)10343(Top 212%)
Finish26.22 mi1.02 mi24928+4710499+2010499+2023300(Top 88%)9807(Top 86%)9807(Top 201%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 88%
×21stories
+97ft-345ft

Overall

23468

Females

9593

F18-39

9593

5K→10K

3.1 - 6.2 mi

Top 88%
×5stories
+79ft-138ft

Overall

23338

Females

9534

F18-39

9534

10K→15K

6.2 - 9.3 mi

Top 88%
×3stories
+67ft-78ft

Overall

23468

Females

9593

F18-39

9593

15K→20K

9.3 - 12.4 mi

Top 92%
×5stories
+106ft-86ft

Overall

24392

Females

10146

F18-39

10146

20K→Half

12.4 - 13.1 mi

Top 90%
×2stories
+19ft-37ft

Overall

23969

Females

9905

F18-39

9905

Half→25K

13.1 - 15.5 mi

Top 95%
×4stories
+66ft-88ft

Overall

25266

Females

10665

F18-39

10665

25K→30K

15.5 - 18.6 mi

Top 97%
×9stories
+181ft-148ft

Overall

25775

Females

10988

F18-39

10988

30K→20M

18.6 - 20.0 mi

Top 96%
×5stories
+64ft-50ft

Overall

25474

Females

10845

F18-39

10845

20M→21M

20.0 - 21.0 mi

Top 92%
×8stories
+106ft-24ft

Overall

24379

Females

10287

F18-39

10287

21M→35K

21.0 - 21.8 mi

Top 89%
×7stories
+17ft-86ft

Overall

23567

Females

9919

F18-39

9919

35K→23M

21.8 - 23.0 mi

Top 93%
×5stories
+23ft-63ft

Overall

24814

Females

10540

F18-39

10540

23M→24M

23.0 - 24.0 mi

Top 94%
×6stories
+12ft-82ft

Overall

24951

Females

10651

F18-39

10651

24M→40K

24.0 - 24.9 mi

Top 97%
×1story
+6ft-20ft

Overall

25815

Females

11083

F18-39

11083

40K→25.2M

24.9 - 25.2 mi

Top 91%
×1story
+13ft-16ft

Overall

24322

Females

10343

F18-39

10343

25.2M→Finish

25.2 - 26.2 mi

Top 88%
×2stories
+22ft-21ft

Overall

23300

Females

9807

F18-39

9807

Passing Analysis

Category:
Athletes Passed
1444
Passed By
1453
Net Change
-9
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#24919
5K → 10K85510+845#24919#24074
10K → 15K24841+207#24074#23867
15K → 20K57223-166#23867#24033
20K → Half2816+12#24033#24021
Half → 25K20345-325#24021#24346
25K → 30K14488-474#24346#24820
30K → 20M20100-80#24820#24900
20M → 21M4824+24#24900#24876
21M → 35K496+43#24876#24833
35K → 23M2155-34#24833#24867
23M → 24M2142-21#24867#24888
24M → 40K789-82#24888#24970
40K → 25.2M510-5#24970#24975
25.2M → Finish514+47#24975#24928
TOTALS14441453-9
📊

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