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BOSTON MARATHON 2023

Kathryn Leahy

Bib: 14245•F

WA

0:00
0:00
/ mi
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Top 50%
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
8:10/mi
25:23
↑ 97↓ 3451.5%
10K· 6.21 mi
8:36/mi
52:06
↑ 79↓ 1380.4%
15K· 9.32 mi
8:52/mi
1:19:40
↑ 67↓ 78
20K· 12.43 mi
8:32/mi
1:46:10
↑ 106↓ 860.1%
Half· 13.11 mi
8:21/mi
1:51:52
↑ 19↓ 370.5%
25K· 15.53 mi
8:50/mi
2:13:18
↑ 66↓ 880.2%
30K· 18.64 mi
9:07/mi
2:41:36
↑ 181↓ 1480.2%
20M
8:33/mi
2:53:13
↑ 64↓ 500.2%
21M
8:33/mi
3:01:46
↑ 106↓ 241.6%
35K· 21.75 mi
7:52/mi
3:07:39
↑ 17↓ 861.7%
23M
9:17/mi
3:19:17
↑ 23↓ 630.6%
24M
8:07/mi
3:27:24
↓ 821.3%
40K· 24.85 mi
8:22/mi
3:34:33
↓ 200.3%
25.2M
8:56/mi
3:37:38
↑ 13↓ 160.2%
Finish· 26.22 mi
7:59/mi
3:45:46
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:51:52
Pace8:32 /mi
2nd Half
Distance13.11 mi
Time1:53:54
Pace8:41 /mi
📊Positive Split: 1.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:54:2725:238:1025:23
8:10
-
10K
6.21 mi11:21:1052:068:2326:43
8:36
+0:26
15K
9.32 mi11:48:441:19:408:3327:34
8:52
+0:16
20K
12.43 mi12:15:141:46:108:3326:30
8:32
-0:20
Half
13.11 mi12:20:561:51:528:325:42
8:21
-0:11
25K
15.53 mi12:42:222:13:188:3521:26
8:50
+0:29
30K
18.64 mi13:10:402:41:368:4028:18
9:07
+0:17
20M
20.00 mi13:22:172:53:138:4011:37
8:33
-0:34
21M
21.00 mi13:30:503:01:468:398:33
8:33
0:00
35K
21.75 mi13:36:433:07:398:385:53
7:52
-0:41
23M
23.00 mi13:48:213:19:178:4011:38
9:17
+1:25
24M
24.00 mi13:56:283:27:248:398:07
8:07
-1:10
40K
24.85 mi14:03:373:34:338:387:09
8:22
+0:15
25.2M
25.20 mi14:06:423:37:388:383:05
8:56
+0:34
Finish
26.22 mi14:14:503:45:468:378:08
7:59
-0:57

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

7:52 /mi

Average Pace

8:37 /mi

Slowest Pace

9:17 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:13:45

59% of race

Time at Steady Pace

1:20:23

36% of race

Time at Slower Pace

11:38

5% of race

Average Pace: 8:37 /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 mi10:54:2725:238:1025:23
8:10
#15242
10K
6.21 mi11:21:1052:068:2326:43
8:36
#17107
15K
9.32 mi11:48:441:19:408:3327:34
8:52
#18154
20K
12.43 mi12:15:141:46:108:3326:30
8:32
#17855
Half
13.11 mi12:20:561:51:528:325:42
8:21
#17770
25K
15.53 mi12:42:222:13:188:3521:26
8:50
#17828
30K
18.64 mi13:10:402:41:368:4028:18
9:07
#17768
20M
20.00 mi13:22:172:53:138:4011:37
8:33
#17496
21M
21.00 mi13:30:503:01:468:398:33
8:33
#17126
35K
21.75 mi13:36:433:07:398:385:53
7:52
#16928
23M
23.00 mi13:48:213:19:178:4011:38
9:17
#16958
24M
24.00 mi13:56:283:27:248:398:07
8:07
#16757
40K
24.85 mi14:03:373:34:338:387:09
8:22
#16596
25.2M
25.20 mi14:06:423:37:388:383:05
8:56
#16518
Finish
26.22 mi14:14:503:45:468:378:08
7:59
#16326
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi152424801480119920(Top 75%)7637(Top 67%)7637(Top 156%)
10K6.21 mi3.10 mi17107-18655990-11895990-118918840(Top 71%)6981(Top 61%)6981(Top 143%)
15K9.32 mi3.11 mi18154-10476618-6286618-62819920(Top 75%)7637(Top 67%)7637(Top 156%)
20K12.43 mi3.11 mi17855+2996435+1836435+18317045(Top 64%)5948(Top 52%)5948(Top 122%)
Half13.11 mi0.68 mi17770+856387+486387+4816879(Top 63%)5825(Top 51%)5825(Top 119%)
25K15.53 mi2.42 mi17828-586434-476434-4718170(Top 68%)6642(Top 58%)6642(Top 136%)
30K18.64 mi3.11 mi17768+606416+186416+1817736(Top 67%)6482(Top 57%)6482(Top 133%)
20M20.00 mi1.36 mi17496+2726276+1406276+14013966(Top 52%)4400(Top 39%)4400(Top 90%)
21M21.00 mi1.00 mi17126+3706063+2136063+21310721(Top 40%)2744(Top 24%)2744(Top 56%)
35K21.75 mi0.75 mi16928+1985946+1175946+11711211(Top 42%)2998(Top 26%)2998(Top 61%)
23M23.00 mi1.25 mi16958-305999-535999-5317483(Top 66%)6555(Top 57%)6555(Top 134%)
24M24.00 mi1.00 mi16757+2015896+1035896+10312099(Top 45%)3656(Top 32%)3656(Top 75%)
40K24.85 mi0.85 mi16596+1615827+695827+6912530(Top 47%)3971(Top 35%)3971(Top 81%)
25.2M25.20 mi0.35 mi16518+785785+425785+4212292(Top 46%)3905(Top 34%)3905(Top 80%)
Finish26.22 mi1.02 mi16326+1925675+1105675+11012046(Top 45%)3744(Top 33%)3744(Top 77%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 75%
×21story building
+97ft-345ft

Overall

19920

Females

7637

F18-39

7637

5K→10K

3.1 - 6.2 mi

Top 71%
×5story building
+79ft-138ft

Overall

18840

Females

6981

F18-39

6981

10K→15K

6.2 - 9.3 mi

Top 75%
×3story building
+67ft-78ft

Overall

19920

Females

7637

F18-39

7637

15K→20K

9.3 - 12.4 mi

Top 64%
×5story building
+106ft-86ft

Overall

17045

Females

5948

F18-39

5948

20K→Half

12.4 - 13.1 mi

Top 63%
×2story building
+19ft-37ft

Overall

16879

Females

5825

F18-39

5825

Half→25K

13.1 - 15.5 mi

Top 68%
×4story building
+66ft-88ft

Overall

18170

Females

6642

F18-39

6642

25K→30K

15.5 - 18.6 mi

Top 67%
×9story building
+181ft-148ft

Overall

17736

Females

6482

F18-39

6482

30K→20M

18.6 - 20.0 mi

Top 52%
×5story building
+64ft-50ft

Overall

13966

Females

4400

F18-39

4400

20M→21M

20.0 - 21.0 mi

Top 40%
×8story building
+106ft-24ft

Overall

10721

Females

2744

F18-39

2744

21M→35K

21.0 - 21.8 mi

Top 42%
×7story building
+17ft-86ft

Overall

11211

Females

2998

F18-39

2998

35K→23M

21.8 - 23.0 mi

Top 66%
×5story building
+23ft-63ft

Overall

17483

Females

6555

F18-39

6555

23M→24M

23.0 - 24.0 mi

Top 45%
×6story building
+12ft-82ft

Overall

12099

Females

3656

F18-39

3656

24M→40K

24.0 - 24.9 mi

Top 47%
×1story
+6ft-20ft

Overall

12530

Females

3971

F18-39

3971

40K→25.2M

24.9 - 25.2 mi

Top 46%
×1story
+13ft-16ft

Overall

12292

Females

3905

F18-39

3905

25.2M→Finish

25.2 - 26.2 mi

Top 45%
×2story building
+22ft-21ft

Overall

12046

Females

3744

F18-39

3744

Passing Analysis

Category:
Athletes Passed
2355
Passed By
3439
Net Change
-1084
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15242
5K → 10K151880-1865#15242#17107
10K → 15K271074-1047#17107#18154
15K → 20K34950+299#18154#17855
20K → Half916+85#17855#17770
Half → 25K109167-58#17770#17828
25K → 30K200140+60#17828#17768
30K → 20M2742+272#17768#17496
20M → 21M3700+370#17496#17126
21M → 35K1980+198#17126#16928
35K → 23M75105-30#16928#16958
23M → 24M2043+201#16958#16757
24M → 40K1654+161#16757#16596
40K → 25.2M802+78#16596#16518
25.2M → Finish1986+192#16518#16326
TOTALS23553439-1084
📊

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