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BOSTON MARATHON 2023

Kalyn Leahy

Bib: 29734•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

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
11:19/mi
35:10
↑ 97↓ 3451.5%
10K· 6.21 mi
11:27/mi
1:10:43
↑ 79↓ 1380.4%
15K· 9.32 mi
11:33/mi
1:46:37
↑ 67↓ 78
20K· 12.43 mi
11:41/mi
2:22:56
↑ 106↓ 860.1%
Half· 13.11 mi
11:20/mi
2:30:40
↑ 19↓ 370.5%
25K· 15.53 mi
11:44/mi
2:59:06
↑ 66↓ 880.2%
30K· 18.64 mi
11:59/mi
3:36:20
↑ 181↓ 1480.2%
20M
11:37/mi
3:52:07
↑ 64↓ 500.2%
21M
12:53/mi
4:05:00
↑ 106↓ 241.6%
35K· 21.75 mi
11:22/mi
4:13:30
↑ 17↓ 861.7%
23M
11:48/mi
4:28:16
↑ 23↓ 630.6%
24M
11:19/mi
4:39:35
↓ 821.3%
40K· 24.85 mi
11:34/mi
4:49:28
↓ 200.3%
25.2M
13:44/mi
4:54:12
↑ 13↓ 160.2%
Finish· 26.22 mi
10:51/mi
5:05:15
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:30:40
Pace11:30 /mi
2nd Half
Distance13.11 mi
Time2:34:35
Pace11:48 /mi
📊Positive Split: 2.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:53:5535:1011:1935:10
11:19
-
10K
6.21 mi12:29:281:10:4311:2335:33
11:27
+0:08
15K
9.32 mi13:05:221:46:3711:2635:54
11:33
+0:06
20K
12.43 mi13:41:412:22:5611:3036:19
11:41
+0:08
Half
13.11 mi13:49:252:30:4011:307:44
11:20
-0:21
25K
15.53 mi14:17:512:59:0611:3228:26
11:44
+0:24
30K
18.64 mi14:55:053:36:2011:3637:14
11:59
+0:15
20M
20.00 mi15:10:523:52:0711:3615:47
11:37
-0:22
21M
21.00 mi15:23:454:05:0011:4012:53
12:53
+1:16
35K
21.75 mi15:32:154:13:3011:398:30
11:22
-1:31
23M
23.00 mi15:47:014:28:1611:4014:46
11:48
+0:26
24M
24.00 mi15:58:204:39:3511:3911:19
11:19
-0:29
40K
24.85 mi16:08:134:49:2811:399:53
11:34
+0:15
25.2M
25.20 mi16:12:574:54:1211:404:44
13:44
+2:10
Finish
26.22 mi16:24:005:05:1511:3911:03
10:51
-2:53

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

10:51 /mi

Average Pace

11:39 /mi

Slowest Pace

13:44 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

11:03

4% of race

Time at Steady Pace

3:59:21

78% of race

Time at Slower Pace

54:51

18% of race

Average Pace: 11:39 /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 mi11:53:5535:1011:1935:10
11:19
#26054
10K
6.21 mi12:29:281:10:4311:2335:33
11:27
#25998
15K
9.32 mi13:05:221:46:3711:2635:54
11:33
#25930
20K
12.43 mi13:41:412:22:5611:3036:19
11:41
#25789
Half
13.11 mi13:49:252:30:4011:307:44
11:20
#25770
25K
15.53 mi14:17:512:59:0611:3228:26
11:44
#25623
30K
18.64 mi14:55:053:36:2011:3637:14
11:59
#25433
20M
20.00 mi15:10:523:52:0711:3615:47
11:37
#25335
21M
21.00 mi15:23:454:05:0011:4012:53
12:53
#25284
35K
21.75 mi15:32:154:13:3011:398:30
11:22
#25239
23M
23.00 mi15:47:014:28:1611:4014:46
11:48
#25176
24M
24.00 mi15:58:204:39:3511:3911:19
11:19
#25134
40K
24.85 mi16:08:134:49:2811:399:53
11:34
#25092
25.2M
25.20 mi16:12:574:54:1211:404:44
13:44
#25090
Finish
26.22 mi16:24:005:05:1511:3911:03
10:51
#25051
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi26054110841108425754(Top 97%)10895(Top 95%)10895(Top 223%)
10K6.21 mi3.10 mi25998+5611041+4311041+4325915(Top 97%)10988(Top 96%)10988(Top 225%)
15K9.32 mi3.11 mi25930+6811002+3911002+3925754(Top 97%)10895(Top 95%)10895(Top 223%)
20K12.43 mi3.11 mi25789+14110920+8210920+8225439(Top 96%)10737(Top 94%)10737(Top 220%)
Half13.11 mi0.68 mi25770+1910914+610914+625330(Top 95%)10686(Top 94%)10686(Top 219%)
25K15.53 mi2.42 mi25623+14710828+8610828+8624914(Top 94%)10470(Top 92%)10470(Top 214%)
30K18.64 mi3.11 mi25433+19010740+8810740+8824480(Top 92%)10266(Top 90%)10266(Top 210%)
20M20.00 mi1.36 mi25335+9810685+5510685+5523702(Top 89%)9904(Top 87%)9904(Top 203%)
21M21.00 mi1.00 mi25284+5110662+2310662+2323962(Top 90%)10067(Top 88%)10067(Top 206%)
35K21.75 mi0.75 mi25239+4510642+2010642+2023923(Top 90%)10097(Top 88%)10097(Top 207%)
23M23.00 mi1.25 mi25176+6310619+2310619+2323711(Top 89%)9965(Top 87%)9965(Top 204%)
24M24.00 mi1.00 mi25134+4210604+1510604+1523629(Top 89%)9965(Top 87%)9965(Top 204%)
40K24.85 mi0.85 mi25092+4210583+2110583+2123314(Top 88%)9836(Top 86%)9836(Top 201%)
25.2M25.20 mi0.35 mi25090+210585-210585-224771(Top 93%)10576(Top 93%)10576(Top 217%)
Finish26.22 mi1.02 mi25051+3910566+1910566+1923701(Top 89%)10012(Top 88%)10012(Top 205%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 97%
×21story building
+97ft-345ft

Overall

25754

Females

10895

F18-39

10895

5K→10K

3.1 - 6.2 mi

Top 97%
×5story building
+79ft-138ft

Overall

25915

Females

10988

F18-39

10988

10K→15K

6.2 - 9.3 mi

Top 97%
×3story building
+67ft-78ft

Overall

25754

Females

10895

F18-39

10895

15K→20K

9.3 - 12.4 mi

Top 96%
×5story building
+106ft-86ft

Overall

25439

Females

10737

F18-39

10737

20K→Half

12.4 - 13.1 mi

Top 95%
×2story building
+19ft-37ft

Overall

25330

Females

10686

F18-39

10686

Half→25K

13.1 - 15.5 mi

Top 94%
×4story building
+66ft-88ft

Overall

24914

Females

10470

F18-39

10470

25K→30K

15.5 - 18.6 mi

Top 92%
×9story building
+181ft-148ft

Overall

24480

Females

10266

F18-39

10266

30K→20M

18.6 - 20.0 mi

Top 89%
×5story building
+64ft-50ft

Overall

23702

Females

9904

F18-39

9904

20M→21M

20.0 - 21.0 mi

Top 90%
×8story building
+106ft-24ft

Overall

23962

Females

10067

F18-39

10067

21M→35K

21.0 - 21.8 mi

Top 90%
×7story building
+17ft-86ft

Overall

23923

Females

10097

F18-39

10097

35K→23M

21.8 - 23.0 mi

Top 89%
×5story building
+23ft-63ft

Overall

23711

Females

9965

F18-39

9965

23M→24M

23.0 - 24.0 mi

Top 89%
×6story building
+12ft-82ft

Overall

23629

Females

9965

F18-39

9965

24M→40K

24.0 - 24.9 mi

Top 88%
×1story
+6ft-20ft

Overall

23314

Females

9836

F18-39

9836

40K→25.2M

24.9 - 25.2 mi

Top 93%
×1story
+13ft-16ft

Overall

24771

Females

10576

F18-39

10576

25.2M→Finish

25.2 - 26.2 mi

Top 89%
×2story building
+22ft-21ft

Overall

23701

Females

10012

F18-39

10012

Passing Analysis

Category:
Athletes Passed
1177
Passed By
174
Net Change
+1003
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#26054
5K → 10K12468+56#26054#25998
10K → 15K10032+68#25998#25930
15K → 20K15514+141#25930#25789
20K → Half267+19#25789#25770
Half → 25K1525+147#25770#25623
25K → 30K1966+190#25623#25433
30K → 20M1002+98#25433#25335
20M → 21M6312+51#25335#25284
21M → 35K472+45#25284#25239
35K → 23M7310+63#25239#25176
23M → 24M464+42#25176#25134
24M → 40K431+42#25134#25092
40K → 25.2M97+2#25092#25090
25.2M → Finish434+39#25090#25051
TOTALS1177174+1003
📊

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