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BOSTON MARATHON 2023

Kayla Bertholf

Bib: 23991•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
24:48
Rank: #13911
Start → 5K
24:48 | 7:59/mi
10K· 6.21 mi
49:05
Rank: #13597 (+314)
5K → 10K
24:17 | 7:49/mi
15K· 9.32 mi
1:13:09
Rank: #13123 (+474)
10K → 15K
24:04 | 7:45/mi
20K· 12.43 mi
1:39:04
Rank: #13875 (-752)
15K → 20K
25:55 | 8:21/mi
Half· 13.11 mi
1:44:43
Rank: #14015 (-140)
20K → Half
5:39 | 8:17/mi
25K· 15.53 mi
2:05:22
Rank: #14438 (-423)
Half → 25K
20:39 | 8:31/mi
30K· 18.64 mi
2:33:32
Rank: #15056 (-618)
25K → 30K
28:10 | 9:04/mi
20M
2:47:08
Rank: #15600 (-544)
30K → 20M
13:36 | 10:00/mi
21M
2:57:42
Rank: #15949 (-349)
20M → 21M
10:34 | 10:34/mi
35K· 21.75 mi
3:04:52
Rank: #16147 (-198)
21M → 35K
7:10 | 9:35/mi
23M
3:16:35
Rank: #16246 (-99)
35K → 23M
11:43 | 9:21/mi
24M
3:26:25
Rank: #16520 (-274)
23M → 24M
9:50 | 9:50/mi
40K· 24.85 mi
3:35:13
Rank: #16762 (-242)
24M → 40K
8:48 | 10:18/mi
25.2M
3:39:07
Rank: #16883 (-121)
40K → 25.2M
3:54 | 11:19/mi
Finish· 26.22 mi
3:48:35
Rank: #17002 (-119)
25.2M → Finish
9:28 | 9:17/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:44:43
Pace7:59 /mi
2nd Half
Distance13.11 mi
Time2:03:52
Pace9:27 /mi
📊Positive Split: 18.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:20:1524:487:5924:48
7:59
-
10K
6.21 mi11:44:3249:057:5424:17
7:49
-0:10
15K
9.32 mi12:08:361:13:097:5124:04
7:45
-0:04
20K
12.43 mi12:34:311:39:047:5825:55
8:21
+0:36
Half
13.11 mi12:40:101:44:437:595:39
8:17
-0:04
25K
15.53 mi13:00:492:05:228:0420:39
8:31
+0:14
30K
18.64 mi13:28:592:33:328:1428:10
9:04
+0:33
20M
20.00 mi13:42:352:47:088:2113:36
10:00
+0:56
21M
21.00 mi13:53:092:57:428:2810:34
10:34
+0:34
35K
21.75 mi14:00:193:04:528:307:10
9:35
-0:59
23M
23.00 mi14:12:023:16:358:3311:43
9:21
-0:14
24M
24.00 mi14:21:523:26:258:369:50
9:50
+0:29
40K
24.85 mi14:30:403:35:138:408:48
10:18
+0:28
25.2M
25.20 mi14:34:343:39:078:423:54
11:19
+1:01
Finish
26.22 mi14:44:023:48:358:439:28
9:17
-2:02

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

7:45 /mi

Average Pace

8:43 /mi

Slowest Pace

11:19 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:05:22

55% of race

Time at Steady Pace

56:31

25% of race

Time at Slower Pace

46:42

20% of race

Average Pace: 8:43 /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 mi11:20:1524:487:5924:48
7:59
#13911
10K
6.21 mi11:44:3249:057:5424:17
7:49
#13597
15K
9.32 mi12:08:361:13:097:5124:04
7:45
#13123
20K
12.43 mi12:34:311:39:047:5825:55
8:21
#13875
Half
13.11 mi12:40:101:44:437:595:39
8:17
#14015
25K
15.53 mi13:00:492:05:228:0420:39
8:31
#14438
30K
18.64 mi13:28:592:33:328:1428:10
9:04
#15056
20M
20.00 mi13:42:352:47:088:2113:36
10:00
#15600
21M
21.00 mi13:53:092:57:428:2810:34
10:34
#15949
35K
21.75 mi14:00:193:04:528:307:10
9:35
#16147
23M
23.00 mi14:12:023:16:358:3311:43
9:21
#16246
24M
24.00 mi14:21:523:26:258:369:50
9:50
#16520
40K
24.85 mi14:30:403:35:138:408:48
10:18
#16762
25.2M
25.20 mi14:34:343:39:078:423:54
11:19
#16883
Finish
26.22 mi14:44:023:48:358:439:28
9:17
#17002
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi139113975397512287(Top 46%)3074(Top 27%)3074(Top 63%)
10K6.21 mi3.10 mi13597+3143807+1683807+16813295(Top 50%)3613(Top 32%)3613(Top 74%)
15K9.32 mi3.11 mi13123+4743538+2693538+26912287(Top 46%)3074(Top 27%)3074(Top 63%)
20K12.43 mi3.11 mi13875-7524010-4724010-47215907(Top 60%)5296(Top 46%)5296(Top 108%)
Half13.11 mi0.68 mi14015-1404096-864096-8616435(Top 62%)5567(Top 49%)5567(Top 114%)
25K15.53 mi2.42 mi14438-4234368-2724368-27216323(Top 61%)5630(Top 49%)5630(Top 115%)
30K18.64 mi3.11 mi15056-6184790-4224790-42217517(Top 66%)6366(Top 56%)6366(Top 130%)
20M20.00 mi1.36 mi15600-5445153-3635153-36320510(Top 77%)8137(Top 71%)8137(Top 167%)
21M21.00 mi1.00 mi15949-3495386-2335386-23319799(Top 74%)7813(Top 68%)7813(Top 160%)
35K21.75 mi0.75 mi16147-1985526-1405526-14020095(Top 75%)7978(Top 70%)7978(Top 163%)
23M23.00 mi1.25 mi16246-995580-545580-5417765(Top 67%)6726(Top 59%)6726(Top 138%)
24M24.00 mi1.00 mi16520-2745759-1795759-17920334(Top 76%)8170(Top 72%)8170(Top 167%)
40K24.85 mi0.85 mi16762-2425918-1595918-15920719(Top 78%)8446(Top 74%)8446(Top 173%)
25.2M25.20 mi0.35 mi16883-1216004-866004-8621143(Top 79%)8665(Top 76%)8665(Top 177%)
Finish26.22 mi1.02 mi17002-1196083-796083-7919318(Top 73%)7618(Top 67%)7618(Top 156%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 46%
×21stories
+97ft-345ft

Overall

12287

Females

3074

F18-39

3074

5K→10K

3.1 - 6.2 mi

Top 50%
×5stories
+79ft-138ft

Overall

13295

Females

3613

F18-39

3613

10K→15K

6.2 - 9.3 mi

Top 46%
×3stories
+67ft-78ft

Overall

12287

Females

3074

F18-39

3074

15K→20K

9.3 - 12.4 mi

Top 60%
×5stories
+106ft-86ft

Overall

15907

Females

5296

F18-39

5296

20K→Half

12.4 - 13.1 mi

Top 62%
×2stories
+19ft-37ft

Overall

16435

Females

5567

F18-39

5567

Half→25K

13.1 - 15.5 mi

Top 61%
×4stories
+66ft-88ft

Overall

16323

Females

5630

F18-39

5630

25K→30K

15.5 - 18.6 mi

Top 66%
×9stories
+181ft-148ft

Overall

17517

Females

6366

F18-39

6366

30K→20M

18.6 - 20.0 mi

Top 77%
×5stories
+64ft-50ft

Overall

20510

Females

8137

F18-39

8137

20M→21M

20.0 - 21.0 mi

Top 74%
×8stories
+106ft-24ft

Overall

19799

Females

7813

F18-39

7813

21M→35K

21.0 - 21.8 mi

Top 75%
×7stories
+17ft-86ft

Overall

20095

Females

7978

F18-39

7978

35K→23M

21.8 - 23.0 mi

Top 67%
×5stories
+23ft-63ft

Overall

17765

Females

6726

F18-39

6726

23M→24M

23.0 - 24.0 mi

Top 76%
×6stories
+12ft-82ft

Overall

20334

Females

8170

F18-39

8170

24M→40K

24.0 - 24.9 mi

Top 78%
×1story
+6ft-20ft

Overall

20719

Females

8446

F18-39

8446

40K→25.2M

24.9 - 25.2 mi

Top 79%
×1story
+13ft-16ft

Overall

21143

Females

8665

F18-39

8665

25.2M→Finish

25.2 - 26.2 mi

Top 73%
×2stories
+22ft-21ft

Overall

19318

Females

7618

F18-39

7618

Passing Analysis

Category:
Athletes Passed
1328
Passed By
4419
Net Change
-3091
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#13911
5K → 10K483169+314#13911#13597
10K → 15K52046+474#13597#13123
15K → 20K47799-752#13123#13875
20K → Half7147-140#13875#14015
Half → 25K52475-423#14015#14438
25K → 30K48666-618#14438#15056
30K → 20M10554-544#15056#15600
20M → 21M18367-349#15600#15949
21M → 35K21219-198#15949#16147
35K → 23M49148-99#16147#16246
23M → 24M18292-274#16246#16520
24M → 40K14256-242#16520#16762
40K → 25.2M7128-121#16762#16883
25.2M → Finish34153-119#16883#17002
TOTALS13284419-3091
📊

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