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BOSTON MARATHON 2023

Holly Kareiva

Bib: 16602•F

CO

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0:00
/ mi
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Overall
#0 / 26622
Top 34%
Gender (Female)
#0 / 11423
Top 15%
Division (F18-39)
#0 / 4884
Top 27%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:05
Rank: #9075
Start → 5K
23:05 | 7:26/mi
10K· 6.21 mi
46:10
Rank: #9418 (-343)
5K → 10K
23:05 | 7:26/mi
15K· 9.32 mi
1:09:43
Rank: #9864 (-446)
10K → 15K
23:33 | 7:35/mi
20K· 12.43 mi
1:33:22
Rank: #9947 (-83)
15K → 20K
23:39 | 7:37/mi
Half· 13.11 mi
1:38:19
Rank: #9841 (+106)
20K → Half
4:57 | 7:15/mi
25K· 15.53 mi
1:56:51
Rank: #9832 (+9)
Half → 25K
18:32 | 7:39/mi
30K· 18.64 mi
2:21:09
Rank: #9758 (+74)
25K → 30K
24:18 | 7:49/mi
20M
2:31:49
Rank: #9674 (+84)
30K → 20M
10:40 | 7:51/mi
21M
2:40:10
Rank: #9652 (+22)
20M → 21M
8:21 | 8:21/mi
35K· 21.75 mi
2:45:41
Rank: #9553 (+99)
21M → 35K
5:31 | 7:22/mi
23M
2:55:30
Rank: #9451 (+102)
35K → 23M
9:49 | 7:50/mi
24M
3:03:06
Rank: #9384 (+67)
23M → 24M
7:36 | 7:36/mi
40K· 24.85 mi
3:09:37
Rank: #9277 (+107)
24M → 40K
6:31 | 7:37/mi
25.2M
3:12:26
Rank: #9244 (+33)
40K → 25.2M
2:49 | 8:10/mi
Finish· 26.22 mi
3:19:53
Rank: #9157 (+87)
25.2M → Finish
7:27 | 7:19/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:38:19
Pace7:30 /mi
2nd Half
Distance13.11 mi
Time1:41:34
Pace7:45 /mi
📊Positive Split: 3.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:13:2623:057:2623:05
7:26
-
10K
6.21 mi11:36:3146:107:2623:05
7:26
0:00
15K
9.32 mi12:00:041:09:437:2923:33
7:35
+0:09
20K
12.43 mi12:23:431:33:227:3123:39
7:37
+0:02
Half
13.11 mi12:28:401:38:197:304:57
7:15
-0:22
25K
15.53 mi12:47:121:56:517:3118:32
7:39
+0:24
30K
18.64 mi13:11:302:21:097:3424:18
7:49
+0:10
20M
20.00 mi13:22:102:31:497:3510:40
7:51
+0:02
21M
21.00 mi13:30:312:40:107:388:21
8:21
+0:30
35K
21.75 mi13:36:022:45:417:375:31
7:22
-0:59
23M
23.00 mi13:45:512:55:307:389:49
7:50
+0:28
24M
24.00 mi13:53:273:03:067:387:36
7:36
-0:14
40K
24.85 mi13:59:583:09:377:386:31
7:37
+0:01
25.2M
25.20 mi14:02:473:12:267:382:49
8:10
+0:33
Finish
26.22 mi14:10:143:19:537:387:27
7:19
-0:51

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

7:15 /mi

Average Pace

7:38 /mi

Slowest Pace

8:21 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:08:43

94% of race

Time at Steady Pace

11:10

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:37 /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 mi11:13:2623:057:2623:05
7:26
#9075
10K
6.21 mi11:36:3146:107:2623:05
7:26
#9418
15K
9.32 mi12:00:041:09:437:2923:33
7:35
#9864
20K
12.43 mi12:23:431:33:227:3123:39
7:37
#9947
Half
13.11 mi12:28:401:38:197:304:57
7:15
#9841
25K
15.53 mi12:47:121:56:517:3118:32
7:39
#9832
30K
18.64 mi13:11:302:21:097:3424:18
7:49
#9758
20M
20.00 mi13:22:102:31:497:3510:40
7:51
#9674
21M
21.00 mi13:30:312:40:107:388:21
8:21
#9652
35K
21.75 mi13:36:022:45:417:375:31
7:22
#9553
23M
23.00 mi13:45:512:55:307:389:49
7:50
#9451
24M
24.00 mi13:53:273:03:067:387:36
7:36
#9384
40K
24.85 mi13:59:583:09:377:386:31
7:37
#9277
25.2M
25.20 mi14:02:473:12:267:382:49
8:10
#9244
Finish
26.22 mi14:10:143:19:537:387:27
7:19
#9157
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi90751422142210841(Top 41%)2249(Top 20%)2249(Top 46%)
10K6.21 mi3.10 mi9418-3431581-1591581-1599899(Top 37%)1771(Top 16%)1771(Top 36%)
15K9.32 mi3.11 mi9864-4461766-1851766-18510841(Top 41%)2249(Top 20%)2249(Top 46%)
20K12.43 mi3.11 mi9947-831814-481814-4810182(Top 38%)1992(Top 17%)1992(Top 41%)
Half13.11 mi0.68 mi9841+1061764+501764+508331(Top 31%)1236(Top 11%)1236(Top 25%)
25K15.53 mi2.42 mi9832+91780-161780-169879(Top 37%)1948(Top 17%)1948(Top 40%)
30K18.64 mi3.11 mi9758+741784-41784-49533(Top 36%)1940(Top 17%)1940(Top 40%)
20M20.00 mi1.36 mi9674+841781+31781+39241(Top 35%)1900(Top 17%)1900(Top 39%)
21M21.00 mi1.00 mi9652+221784-31784-39544(Top 36%)2158(Top 19%)2158(Top 44%)
35K21.75 mi0.75 mi9553+991766+181766+187693(Top 29%)1387(Top 12%)1387(Top 28%)
23M23.00 mi1.25 mi9451+1021746+201746+208700(Top 33%)1883(Top 16%)1883(Top 39%)
24M24.00 mi1.00 mi9384+671754-81754-88432(Top 32%)1851(Top 16%)1851(Top 38%)
40K24.85 mi0.85 mi9277+1071737+171737+177482(Top 28%)1555(Top 14%)1555(Top 32%)
25.2M25.20 mi0.35 mi9244+331734+31734+37566(Top 28%)1636(Top 14%)1636(Top 33%)
Finish26.22 mi1.02 mi9157+871717+171717+177225(Top 27%)1518(Top 13%)1518(Top 31%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 41%
×21stories
+97ft-345ft

Overall

10841

Females

2249

F18-39

2249

5K→10K

3.1 - 6.2 mi

Top 37%
×5stories
+79ft-138ft

Overall

9899

Females

1771

F18-39

1771

10K→15K

6.2 - 9.3 mi

Top 41%
×3stories
+67ft-78ft

Overall

10841

Females

2249

F18-39

2249

15K→20K

9.3 - 12.4 mi

Top 38%
×5stories
+106ft-86ft

Overall

10182

Females

1992

F18-39

1992

20K→Half

12.4 - 13.1 mi

Top 31%
×2stories
+19ft-37ft

Overall

8331

Females

1236

F18-39

1236

Half→25K

13.1 - 15.5 mi

Top 37%
×4stories
+66ft-88ft

Overall

9879

Females

1948

F18-39

1948

25K→30K

15.5 - 18.6 mi

Top 36%
×9stories
+181ft-148ft

Overall

9533

Females

1940

F18-39

1940

30K→20M

18.6 - 20.0 mi

Top 35%
×5stories
+64ft-50ft

Overall

9241

Females

1900

F18-39

1900

20M→21M

20.0 - 21.0 mi

Top 36%
×8stories
+106ft-24ft

Overall

9544

Females

2158

F18-39

2158

21M→35K

21.0 - 21.8 mi

Top 29%
×7stories
+17ft-86ft

Overall

7693

Females

1387

F18-39

1387

35K→23M

21.8 - 23.0 mi

Top 33%
×5stories
+23ft-63ft

Overall

8700

Females

1883

F18-39

1883

23M→24M

23.0 - 24.0 mi

Top 32%
×6stories
+12ft-82ft

Overall

8432

Females

1851

F18-39

1851

24M→40K

24.0 - 24.9 mi

Top 28%
×1story
+6ft-20ft

Overall

7482

Females

1555

F18-39

1555

40K→25.2M

24.9 - 25.2 mi

Top 28%
×1story
+13ft-16ft

Overall

7566

Females

1636

F18-39

1636

25.2M→Finish

25.2 - 26.2 mi

Top 27%
×2stories
+22ft-21ft

Overall

7225

Females

1518

F18-39

1518

Passing Analysis

Category:
Athletes Passed
1589*
Passed By
1670
Net Change
-82
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9075
5K → 10K144487-343#9075#9418
10K → 15K58504-446#9418#9864
15K → 20K137*220-83#9864#9947
20K → Half1071+106#9947#9841
Half → 25K121111+9#9841#9832
25K → 30K194*120+74#9832#9758
30K → 20M12743+84#9758#9674
20M → 21M8159+22#9674#9652
21M → 35K1056+99#9652#9553
35K → 23M13634+102#9553#9451
23M → 24M10235+67#9451#9384
24M → 40K12720+107#9384#9277
40K → 25.2M4512+33#9277#9244
25.2M → Finish10518+87#9244#9157
TOTALS1589*1670-82

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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