Boston Marathon logo
BOSTON MARATHON 2023

Kayla Strong

Bib: 9403•F

UT

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 26622
Top 11%
Gender (Female)
#0 / 11423
Top 1%
Division (F18-39)
#0 / 4884
Top 3%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
22:13
Rank: #7197
Start → 5K
22:13 | 7:09/mi
10K· 6.21 mi
43:09
Rank: #6153 (+1044)
5K → 10K
20:56 | 6:44/mi
15K· 9.32 mi
1:03:19
Rank: #4943 (+1210)
10K → 15K
20:10 | 6:29/mi
20K· 12.43 mi
1:23:48
Rank: #4293 (+650)
15K → 20K
20:29 | 6:36/mi
Half· 13.11 mi
1:28:13
Rank: #4179 (+114)
20K → Half
4:25 | 6:28/mi
25K· 15.53 mi
1:44:04
Rank: #3767 (+412)
Half → 25K
15:51 | 6:32/mi
30K· 18.64 mi
2:04:44
Rank: #3371 (+396)
25K → 30K
20:40 | 6:39/mi
20M
2:13:55
Rank: #3263 (+108)
30K → 20M
9:11 | 6:45/mi
21M
2:20:53
Rank: #3150 (+113)
20M → 21M
6:58 | 6:58/mi
35K· 21.75 mi
2:25:52
Rank: #3140 (+10)
21M → 35K
4:59 | 6:40/mi
23M
2:34:28
Rank: #3092 (+48)
35K → 23M
8:36 | 6:52/mi
24M
2:41:08
Rank: #3073 (+19)
23M → 24M
6:40 | 6:40/mi
40K· 24.85 mi
2:46:58
Rank: #3026 (+47)
24M → 40K
5:50 | 6:49/mi
25.2M
2:49:32
Rank: #3033 (-7)
40K → 25.2M
2:34 | 7:27/mi
Finish· 26.22 mi
2:56:29
Rank: #3055 (-22)
25.2M → Finish
6:57 | 6:49/mi

The Course

Is this your race?

Claim it — unlock a deeper AI report on this race, free

A personalized Race Performance Report that goes beyond this page — emailed to you, built from your real splits.

Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:28:13
Pace6:44 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:28:16
Pace6:44 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:48:1422:137:0922:13
7:09
-
10K
6.21 mi11:09:1043:096:5720:56
6:44
-0:25
15K
9.32 mi11:29:201:03:196:4820:10
6:29
-0:15
20K
12.43 mi11:49:491:23:486:4520:29
6:36
+0:07
Half
13.11 mi11:54:141:28:136:444:25
6:28
-0:08
25K
15.53 mi12:10:051:44:046:4215:51
6:32
+0:04
30K
18.64 mi12:30:452:04:446:4120:40
6:39
+0:07
20M
20.00 mi12:39:562:13:556:429:11
6:45
+0:06
21M
21.00 mi12:46:542:20:536:436:58
6:58
+0:13
35K
21.75 mi12:51:532:25:526:424:59
6:40
-0:18
23M
23.00 mi13:00:292:34:286:438:36
6:52
+0:12
24M
24.00 mi13:07:092:41:086:436:40
6:40
-0:12
40K
24.85 mi13:12:592:46:586:435:50
6:49
+0:09
25.2M
25.20 mi13:15:332:49:326:442:34
7:27
+0:38
Finish
26.22 mi13:22:302:56:296:446:57
6:49
-0:38

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

6:28 /mi

Average Pace

6:44 /mi

Slowest Pace

7:27 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:31:42

86% of race

Time at Steady Pace

24:47

14% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:44 /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 mi10:48:1422:137:0922:13
7:09
#7197
10K
6.21 mi11:09:1043:096:5720:56
6:44
#6153
15K
9.32 mi11:29:201:03:196:4820:10
6:29
#4943
20K
12.43 mi11:49:491:23:486:4520:29
6:36
#4293
Half
13.11 mi11:54:141:28:136:444:25
6:28
#4179
25K
15.53 mi12:10:051:44:046:4215:51
6:32
#3767
30K
18.64 mi12:30:452:04:446:4120:40
6:39
#3371
20M
20.00 mi12:39:562:13:556:429:11
6:45
#3263
21M
21.00 mi12:46:542:20:536:436:58
6:58
#3150
35K
21.75 mi12:51:532:25:526:424:59
6:40
#3140
23M
23.00 mi13:00:292:34:286:438:36
6:52
#3092
24M
24.00 mi13:07:092:41:086:436:40
6:40
#3073
40K
24.85 mi13:12:592:46:586:435:50
6:49
#3026
25.2M
25.20 mi13:15:332:49:326:442:34
7:27
#3033
Finish
26.22 mi13:22:302:56:296:446:57
6:49
#3055
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi71977627622597(Top 10%)107(Top 0.9%)107(Top 2%)
10K6.21 mi3.10 mi6153+1044540+222540+2224726(Top 18%)323(Top 3%)323(Top 7%)
15K9.32 mi3.11 mi4943+1210343+197343+1972597(Top 10%)107(Top 0.9%)107(Top 2%)
20K12.43 mi3.11 mi4293+650266+77266+772806(Top 11%)124(Top 1%)124(Top 3%)
Half13.11 mi0.68 mi4179+114256+10256+102707(Top 10%)112(Top 1.0%)112(Top 2%)
25K15.53 mi2.42 mi3767+412205+51205+512378(Top 9%)99(Top 0.9%)99(Top 2%)
30K18.64 mi3.11 mi3371+396171+34171+342193(Top 8%)98(Top 0.9%)98(Top 2%)
20M20.00 mi1.36 mi3263+108165+6165+62602(Top 10%)134(Top 1%)134(Top 3%)
21M21.00 mi1.00 mi3150+113159+6159+62035(Top 8%)109(Top 1.0%)109(Top 2%)
35K21.75 mi0.75 mi3140+101591593388(Top 13%)231(Top 2%)231(Top 5%)
23M23.00 mi1.25 mi3092+48153+6153+63079(Top 12%)206(Top 2%)206(Top 4%)
24M24.00 mi1.00 mi3073+19157-4157-42965(Top 11%)208(Top 2%)208(Top 4%)
40K24.85 mi0.85 mi3026+47156+1156+12981(Top 11%)236(Top 2%)236(Top 5%)
25.2M25.20 mi0.35 mi3033-7158-2158-23695(Top 14%)373(Top 3%)373(Top 8%)
Finish26.22 mi1.02 mi3055-22160-2160-24212(Top 16%)498(Top 4%)498(Top 10%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 10%
×21stories
+97ft-345ft

Overall

2597

Females

107

F18-39

107

5K→10K

3.1 - 6.2 mi

Top 18%
×5stories
+79ft-138ft

Overall

4726

Females

323

F18-39

323

10K→15K

6.2 - 9.3 mi

Top 10%
×3stories
+67ft-78ft

Overall

2597

Females

107

F18-39

107

15K→20K

9.3 - 12.4 mi

Top 11%
×5stories
+106ft-86ft

Overall

2806

Females

124

F18-39

124

20K→Half

12.4 - 13.1 mi

Top 10%
×2stories
+19ft-37ft

Overall

2707

Females

112

F18-39

112

Half→25K

13.1 - 15.5 mi

Top 9%
×4stories
+66ft-88ft

Overall

2378

Females

99

F18-39

99

25K→30K

15.5 - 18.6 mi

Top 8%
×9stories
+181ft-148ft

Overall

2193

Females

98

F18-39

98

30K→20M

18.6 - 20.0 mi

Top 10%
×5stories
+64ft-50ft

Overall

2602

Females

134

F18-39

134

20M→21M

20.0 - 21.0 mi

Top 8%
×8stories
+106ft-24ft

Overall

2035

Females

109

F18-39

109

21M→35K

21.0 - 21.8 mi

Top 13%
×7stories
+17ft-86ft

Overall

3388

Females

231

F18-39

231

35K→23M

21.8 - 23.0 mi

Top 12%
×5stories
+23ft-63ft

Overall

3079

Females

206

F18-39

206

23M→24M

23.0 - 24.0 mi

Top 11%
×6stories
+12ft-82ft

Overall

2965

Females

208

F18-39

208

24M→40K

24.0 - 24.9 mi

Top 11%
×1story
+6ft-20ft

Overall

2981

Females

236

F18-39

236

40K→25.2M

24.9 - 25.2 mi

Top 14%
×1story
+13ft-16ft

Overall

3695

Females

373

F18-39

373

25.2M→Finish

25.2 - 26.2 mi

Top 16%
×2stories
+22ft-21ft

Overall

4212

Females

498

F18-39

498

Passing Analysis

Category:
Athletes Passed
4353
Passed By
211
Net Change
+4142
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#7197
5K → 10K10517+1044#7197#6153
10K → 15K12100+1210#6153#4943
15K → 20K6500+650#4943#4293
20K → Half1140+114#4293#4179
Half → 25K4131+412#4179#3767
25K → 30K3982+396#3767#3371
30K → 20M12416+108#3371#3263
20M → 21M1152+113#3263#3150
21M → 35K3121+10#3150#3140
35K → 23M7628+48#3140#3092
23M → 24M4930+19#3092#3073
24M → 40K6619+47#3073#3026
40K → 25.2M1421-7#3026#3033
25.2M → Finish4264-22#3033#3055
TOTALS4353211+4142
📊

Passing Visuals

Category:
Loading...

🔥Passing Intensity

Loading...

🔄Passing Circle

Loading...

🌊Position Flow

Loading...

🏃Race Lanes

Loading...

Upload your GPX file

Supports Garmin, Apple Watch, Polar, Suunto, COROS, Strava, and other apps

.gpx files up to 10MB

Export Track Data

Download your race performance as a GPX or TCX file to import into Strava, Garmin Connect, or other fitness apps.

Questions or issues regarding timing data?

If you notice any discrepancies in your timing data or have questions about your results, our support team can help.

Contact Race Support
Share Feedback

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing