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BOSTON MARATHON 2023

Kathryn Smith

Bib: 18157•F

CO

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 48%
Gender (Female)
#0 / 11423
Top 32%
Division (F18-39)
#0 / 4884
Top 50%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
25:12
Rank: #14798
Start → 5K
25:12 | 8:07/mi
10K· 6.21 mi
49:43
Rank: #14398 (+400)
5K → 10K
24:31 | 7:53/mi
15K· 9.32 mi
1:14:08
Rank: #14000 (+398)
10K → 15K
24:25 | 7:52/mi
20K· 12.43 mi
1:38:34
Rank: #13555 (+445)
15K → 20K
24:26 | 7:52/mi
Half· 13.11 mi
1:43:53
Rank: #13518 (+37)
20K → Half
5:19 | 7:48/mi
25K· 15.53 mi
2:03:07
Rank: #13279 (+239)
Half → 25K
19:14 | 7:56/mi
30K· 18.64 mi
2:28:58
Rank: #13229 (+50)
25K → 30K
25:51 | 8:19/mi
20M
2:40:16
Rank: #13154 (+75)
30K → 20M
11:18 | 8:19/mi
21M
2:49:06
Rank: #13069 (+85)
20M → 21M
8:50 | 8:50/mi
35K· 21.75 mi
2:55:12
Rank: #13061 (+8)
21M → 35K
6:06 | 8:09/mi
23M
3:05:36
Rank: #12963 (+98)
35K → 23M
10:24 | 8:18/mi
24M
3:13:44
Rank: #12930 (+33)
23M → 24M
8:08 | 8:08/mi
40K· 24.85 mi
3:20:53
Rank: #12892 (+38)
24M → 40K
7:09 | 8:22/mi
25.2M
3:24:00
Rank: #12891 (+1)
40K → 25.2M
3:07 | 9:02/mi
Finish· 26.22 mi
3:32:14
Rank: #12865 (+26)
25.2M → Finish
8:14 | 8:05/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:43:53
Pace7:55 /mi
2nd Half
Distance13.11 mi
Time1:48:21
Pace8:16 /mi
📊Positive Split: 4.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:16:2625:128:0725:12
8:07
-
10K
6.21 mi11:40:5749:438:0024:31
7:53
-0:14
15K
9.32 mi12:05:221:14:087:5724:25
7:52
-0:01
20K
12.43 mi12:29:481:38:347:5624:26
7:52
0:00
Half
13.11 mi12:35:071:43:537:555:19
7:48
-0:04
25K
15.53 mi12:54:212:03:077:5619:14
7:56
+0:08
30K
18.64 mi13:20:122:28:587:5925:51
8:19
+0:23
20M
20.00 mi13:31:302:40:168:0111:18
8:19
0:00
21M
21.00 mi13:40:202:49:068:038:50
8:50
+0:31
35K
21.75 mi13:46:262:55:128:036:06
8:09
-0:41
23M
23.00 mi13:56:503:05:368:0410:24
8:18
+0:09
24M
24.00 mi14:04:583:13:448:048:08
8:08
-0:10
40K
24.85 mi14:12:073:20:538:057:09
8:22
+0:14
25.2M
25.20 mi14:15:143:24:008:063:07
9:02
+0:40
Finish
26.22 mi14:23:283:32:148:068:14
8:05
-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

7:48 /mi

Average Pace

8:06 /mi

Slowest Pace

9:02 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:20:17

94% of race

Time at Steady Pace

11:57

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:06 /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 mi11:16:2625:128:0725:12
8:07
#14798
10K
6.21 mi11:40:5749:438:0024:31
7:53
#14398
15K
9.32 mi12:05:221:14:087:5724:25
7:52
#14000
20K
12.43 mi12:29:481:38:347:5624:26
7:52
#13555
Half
13.11 mi12:35:071:43:537:555:19
7:48
#13518
25K
15.53 mi12:54:212:03:077:5619:14
7:56
#13279
30K
18.64 mi13:20:122:28:587:5925:51
8:19
#13229
20M
20.00 mi13:31:302:40:168:0111:18
8:19
#13154
21M
21.00 mi13:40:202:49:068:038:50
8:50
#13069
35K
21.75 mi13:46:262:55:128:036:06
8:09
#13061
23M
23.00 mi13:56:503:05:368:0410:24
8:18
#12963
24M
24.00 mi14:04:583:13:448:048:08
8:08
#12930
40K
24.85 mi14:12:073:20:538:057:09
8:22
#12892
25.2M
25.20 mi14:15:143:24:008:063:07
9:02
#12891
Finish
26.22 mi14:23:283:32:148:068:14
8:05
#12865
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi147984512451213199(Top 50%)3606(Top 32%)3606(Top 74%)
10K6.21 mi3.10 mi14398+4004281+2314281+23113916(Top 52%)3992(Top 35%)3992(Top 82%)
15K9.32 mi3.11 mi14000+3984055+2264055+22613199(Top 50%)3606(Top 32%)3606(Top 74%)
20K12.43 mi3.11 mi13555+4453816+2393816+23912303(Top 46%)3140(Top 27%)3140(Top 64%)
Half13.11 mi0.68 mi13518+373794+223794+2212740(Top 48%)3346(Top 29%)3346(Top 69%)
25K15.53 mi2.42 mi13279+2393667+1273667+12712185(Top 46%)3187(Top 28%)3187(Top 65%)
30K18.64 mi3.11 mi13229+503686-193686-1913149(Top 49%)3837(Top 34%)3837(Top 79%)
20M20.00 mi1.36 mi13154+753653+333653+3312467(Top 47%)3560(Top 31%)3560(Top 73%)
21M21.00 mi1.00 mi13069+853622+313622+3112468(Top 47%)3667(Top 32%)3667(Top 75%)
35K21.75 mi0.75 mi13061+83633-113633-1113168(Top 49%)4089(Top 36%)4089(Top 84%)
23M23.00 mi1.25 mi12963+983610+233610+2311955(Top 45%)3493(Top 31%)3493(Top 72%)
24M24.00 mi1.00 mi12930+333605+53605+512168(Top 46%)3679(Top 32%)3679(Top 75%)
40K24.85 mi0.85 mi12892+383610-53610-512491(Top 47%)3932(Top 34%)3932(Top 81%)
25.2M25.20 mi0.35 mi12891+13618-83618-812783(Top 48%)4116(Top 36%)4116(Top 84%)
Finish26.22 mi1.02 mi12865+263622-43622-412674(Top 48%)4050(Top 35%)4050(Top 83%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 50%
×21stories
+97ft-345ft

Overall

13199

Females

3606

F18-39

3606

5K→10K

3.1 - 6.2 mi

Top 52%
×5stories
+79ft-138ft

Overall

13916

Females

3992

F18-39

3992

10K→15K

6.2 - 9.3 mi

Top 50%
×3stories
+67ft-78ft

Overall

13199

Females

3606

F18-39

3606

15K→20K

9.3 - 12.4 mi

Top 46%
×5stories
+106ft-86ft

Overall

12303

Females

3140

F18-39

3140

20K→Half

12.4 - 13.1 mi

Top 48%
×2stories
+19ft-37ft

Overall

12740

Females

3346

F18-39

3346

Half→25K

13.1 - 15.5 mi

Top 46%
×4stories
+66ft-88ft

Overall

12185

Females

3187

F18-39

3187

25K→30K

15.5 - 18.6 mi

Top 49%
×9stories
+181ft-148ft

Overall

13149

Females

3837

F18-39

3837

30K→20M

18.6 - 20.0 mi

Top 47%
×5stories
+64ft-50ft

Overall

12467

Females

3560

F18-39

3560

20M→21M

20.0 - 21.0 mi

Top 47%
×8stories
+106ft-24ft

Overall

12468

Females

3667

F18-39

3667

21M→35K

21.0 - 21.8 mi

Top 49%
×7stories
+17ft-86ft

Overall

13168

Females

4089

F18-39

4089

35K→23M

21.8 - 23.0 mi

Top 45%
×5stories
+23ft-63ft

Overall

11955

Females

3493

F18-39

3493

23M→24M

23.0 - 24.0 mi

Top 46%
×6stories
+12ft-82ft

Overall

12168

Females

3679

F18-39

3679

24M→40K

24.0 - 24.9 mi

Top 47%
×1story
+6ft-20ft

Overall

12491

Females

3932

F18-39

3932

40K→25.2M

24.9 - 25.2 mi

Top 48%
×1story
+13ft-16ft

Overall

12783

Females

4116

F18-39

4116

25.2M→Finish

25.2 - 26.2 mi

Top 48%
×2stories
+22ft-21ft

Overall

12674

Females

4050

F18-39

4050

Passing Analysis

Category:
Athletes Passed
2709
Passed By
776
Net Change
+1933
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#14798
5K → 10K533133+400#14798#14398
10K → 15K45254+398#14398#14000
15K → 20K46621+445#14000#13555
20K → Half5215+37#13555#13518
Half → 25K26728+239#13518#13279
25K → 30K215165+50#13279#13229
30K → 20M12045+75#13229#13154
20M → 21M13651+85#13154#13069
21M → 35K5850+8#13069#13061
35K → 23M14143+98#13061#12963
23M → 24M7845+33#12963#12930
24M → 40K8547+38#12930#12892
40K → 25.2M2928+1#12892#12891
25.2M → Finish7751+26#12891#12865
TOTALS2709776+1933
📊

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