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BOSTON MARATHON 2023

Amanda Kerstman

Bib: 30972•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
33:49
Rank: #25514
Start → 5K
33:49 | 10:53/mi
10K· 6.21 mi
1:06:18
Rank: #25037 (+477)
5K → 10K
32:29 | 10:27/mi
15K· 9.32 mi
1:38:15
Rank: #24702 (+335)
10K → 15K
31:57 | 10:17/mi
20K· 12.43 mi
2:10:02
Rank: #24353 (+349)
15K → 20K
31:47 | 10:14/mi
Half· 13.11 mi
2:16:50
Rank: #24295 (+58)
20K → Half
6:48 | 9:58/mi
25K· 15.53 mi
2:42:15
Rank: #24069 (+226)
Half → 25K
25:25 | 10:29/mi
30K· 18.64 mi
3:14:47
Rank: #23704 (+365)
25K → 30K
32:32 | 10:28/mi
20M
3:28:53
Rank: #23552 (+152)
30K → 20M
14:06 | 10:23/mi
21M
3:39:42
Rank: #23409 (+143)
20M → 21M
10:49 | 10:49/mi
35K· 21.75 mi
3:47:13
Rank: #23343 (+66)
21M → 35K
7:31 | 10:03/mi
23M
4:00:09
Rank: #23224 (+119)
35K → 23M
12:56 | 10:20/mi
24M
4:10:30
Rank: #23160 (+64)
23M → 24M
10:21 | 10:21/mi
40K· 24.85 mi
4:19:23
Rank: #23066 (+94)
24M → 40K
8:53 | 10:23/mi
25.2M
4:23:06
Rank: #23035 (+31)
40K → 25.2M
3:43 | 10:47/mi
Finish· 26.22 mi
4:32:43
Rank: #22943 (+92)
25.2M → Finish
9:37 | 9:26/mi

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time2:16:50
Pace10:26 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time2:15:53
Pace10:22 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:53:2033:4910:5333:49
10:53
-
10K
6.21 mi12:25:491:06:1810:4032:29
10:27
-0:26
15K
9.32 mi12:57:461:38:1510:3231:57
10:17
-0:10
20K
12.43 mi13:29:332:10:0210:2831:47
10:14
-0:03
Half
13.11 mi13:36:212:16:5010:266:48
9:58
-0:16
25K
15.53 mi14:01:462:42:1510:2725:25
10:29
+0:31
30K
18.64 mi14:34:183:14:4710:2732:32
10:28
-0:01
20M
20.00 mi14:48:243:28:5310:2714:06
10:23
-0:05
21M
21.00 mi14:59:133:39:4210:2810:49
10:49
+0:26
35K
21.75 mi15:06:443:47:1310:277:31
10:03
-0:46
23M
23.00 mi15:19:404:00:0910:2612:56
10:20
+0:17
24M
24.00 mi15:30:014:10:3010:2610:21
10:21
+0:01
40K
24.85 mi15:38:544:19:2310:268:53
10:23
+0:02
25.2M
25.20 mi15:42:374:23:0610:263:43
10:47
+0:24
Finish
26.22 mi15:52:144:32:4310:259:37
9:26
-1:21

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

9:26 /mi

Average Pace

10:25 /mi

Slowest Pace

10:53 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:50:57

41% of race

Time at Steady Pace

2:41:46

59% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 10:24 /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 mi11:53:2033:4910:5333:49
10:53
#25514
10K
6.21 mi12:25:491:06:1810:4032:29
10:27
#25037
15K
9.32 mi12:57:461:38:1510:3231:57
10:17
#24702
20K
12.43 mi13:29:332:10:0210:2831:47
10:14
#24353
Half
13.11 mi13:36:212:16:5010:266:48
9:58
#24295
25K
15.53 mi14:01:462:42:1510:2725:25
10:29
#24069
30K
18.64 mi14:34:183:14:4710:2732:32
10:28
#23704
20M
20.00 mi14:48:243:28:5310:2714:06
10:23
#23552
21M
21.00 mi14:59:133:39:4210:2810:49
10:49
#23409
35K
21.75 mi15:06:443:47:1310:277:31
10:03
#23343
23M
23.00 mi15:19:404:00:0910:2612:56
10:20
#23224
24M
24.00 mi15:30:014:10:3010:2610:21
10:21
#23160
40K
24.85 mi15:38:544:19:2310:268:53
10:23
#23066
25.2M
25.20 mi15:42:374:23:0610:263:43
10:47
#23035
Finish
26.22 mi15:52:144:32:4310:259:37
9:26
#22943
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi25514107321073224058(Top 90%)9920(Top 87%)9920(Top 203%)
10K6.21 mi3.10 mi25037+47710455+27710455+27724602(Top 92%)10226(Top 90%)10226(Top 209%)
15K9.32 mi3.11 mi24702+33510282+17310282+17324058(Top 90%)9920(Top 87%)9920(Top 203%)
20K12.43 mi3.11 mi24353+34910093+18910093+18923347(Top 88%)9537(Top 83%)9537(Top 195%)
Half13.11 mi0.68 mi24295+5810059+3410059+3423223(Top 87%)9477(Top 83%)9477(Top 194%)
25K15.53 mi2.42 mi24069+2269942+1179942+11723173(Top 87%)9479(Top 83%)9479(Top 194%)
30K18.64 mi3.11 mi23704+3659752+1909752+19022153(Top 83%)8982(Top 79%)8982(Top 184%)
20M20.00 mi1.36 mi23552+1529687+659687+6521481(Top 81%)8693(Top 76%)8693(Top 178%)
21M21.00 mi1.00 mi23409+1439614+739614+7320434(Top 77%)8169(Top 72%)8169(Top 167%)
35K21.75 mi0.75 mi23343+669591+239591+2321437(Top 81%)8741(Top 77%)8741(Top 179%)
23M23.00 mi1.25 mi23224+1199536+559536+5520919(Top 79%)8479(Top 74%)8479(Top 174%)
24M24.00 mi1.00 mi23160+649511+259511+2521683(Top 81%)8937(Top 78%)8937(Top 183%)
40K24.85 mi0.85 mi23066+949478+339478+3320981(Top 79%)8598(Top 75%)8598(Top 176%)
25.2M25.20 mi0.35 mi23035+319459+199459+1919972(Top 75%)8061(Top 71%)8061(Top 165%)
Finish26.22 mi1.02 mi22943+929421+389421+3819931(Top 75%)7964(Top 70%)7964(Top 163%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 90%
×21stories
+97ft-345ft

Overall

24058

Females

9920

F18-39

9920

5K→10K

3.1 - 6.2 mi

Top 92%
×5stories
+79ft-138ft

Overall

24602

Females

10226

F18-39

10226

10K→15K

6.2 - 9.3 mi

Top 90%
×3stories
+67ft-78ft

Overall

24058

Females

9920

F18-39

9920

15K→20K

9.3 - 12.4 mi

Top 88%
×5stories
+106ft-86ft

Overall

23347

Females

9537

F18-39

9537

20K→Half

12.4 - 13.1 mi

Top 87%
×2stories
+19ft-37ft

Overall

23223

Females

9477

F18-39

9477

Half→25K

13.1 - 15.5 mi

Top 87%
×4stories
+66ft-88ft

Overall

23173

Females

9479

F18-39

9479

25K→30K

15.5 - 18.6 mi

Top 83%
×9stories
+181ft-148ft

Overall

22153

Females

8982

F18-39

8982

30K→20M

18.6 - 20.0 mi

Top 81%
×5stories
+64ft-50ft

Overall

21481

Females

8693

F18-39

8693

20M→21M

20.0 - 21.0 mi

Top 77%
×8stories
+106ft-24ft

Overall

20434

Females

8169

F18-39

8169

21M→35K

21.0 - 21.8 mi

Top 81%
×7stories
+17ft-86ft

Overall

21437

Females

8741

F18-39

8741

35K→23M

21.8 - 23.0 mi

Top 79%
×5stories
+23ft-63ft

Overall

20919

Females

8479

F18-39

8479

23M→24M

23.0 - 24.0 mi

Top 81%
×6stories
+12ft-82ft

Overall

21683

Females

8937

F18-39

8937

24M→40K

24.0 - 24.9 mi

Top 79%
×1story
+6ft-20ft

Overall

20981

Females

8598

F18-39

8598

40K→25.2M

24.9 - 25.2 mi

Top 75%
×1story
+13ft-16ft

Overall

19972

Females

8061

F18-39

8061

25.2M→Finish

25.2 - 26.2 mi

Top 75%
×2stories
+22ft-21ft

Overall

19931

Females

7964

F18-39

7964

Passing Analysis

Category:
Athletes Passed
2664
Passed By
93
Net Change
+2571
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#25514
5K → 10K50730+477#25514#25037
10K → 15K34813+335#25037#24702
15K → 20K3556+349#24702#24353
20K → Half602+58#24353#24295
Half → 25K2348+226#24295#24069
25K → 30K3683+365#24069#23704
30K → 20M1575+152#23704#23552
20M → 21M1452+143#23552#23409
21M → 35K693+66#23409#23343
35K → 23M1234+119#23343#23224
23M → 24M695+64#23224#23160
24M → 40K984+94#23160#23066
40K → 25.2M343+31#23066#23035
25.2M → Finish975+92#23035#22943
TOTALS266493+2571
📊

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