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BOSTON MARATHON 2023

Kendra Eerdmans

Bib: 16690•F

ND

0:00
0:00
/ mi
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Top 36%
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
23:47
Rank: #11083
Start → 5K
23:47 | 7:39/mi
10K· 6.21 mi
48:09
Rank: #12271 (-1188)
5K → 10K
24:22 | 7:51/mi
15K· 9.32 mi
1:12:53
Rank: #12875 (-604)
10K → 15K
24:44 | 7:58/mi
20K· 12.43 mi
1:38:09
Rank: #13307 (-432)
15K → 20K
25:16 | 8:08/mi
Half· 13.11 mi
1:43:38
Rank: #13364 (-57)
20K → Half
5:29 | 8:02/mi
25K· 15.53 mi
2:03:38
Rank: #13543 (-179)
Half → 25K
20:00 | 8:15/mi
30K· 18.64 mi
2:29:58
Rank: #13634 (-91)
25K → 30K
26:20 | 8:29/mi
20M
2:41:38
Rank: #13684 (-50)
30K → 20M
11:40 | 8:35/mi
21M
2:51:02
Rank: #13800 (-116)
20M → 21M
9:24 | 9:24/mi
35K· 21.75 mi
2:57:17
Rank: #13823 (-23)
21M → 35K
6:15 | 8:21/mi
23M
3:08:14
Rank: #13842 (-19)
35K → 23M
10:57 | 8:45/mi
24M
3:16:48
Rank: #13877 (-35)
23M → 24M
8:34 | 8:34/mi
40K· 24.85 mi
3:23:59
Rank: #13822 (+55)
24M → 40K
7:11 | 8:24/mi
25.2M
3:27:17
Rank: #13844 (-22)
40K → 25.2M
3:18 | 9:34/mi
Finish· 26.22 mi
3:35:33
Rank: #13788 (+56)
25.2M → Finish
8:16 | 8:07/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:43:38
Pace7:54 /mi
2nd Half
Distance13.11 mi
Time1:51:55
Pace8:32 /mi
📊Positive Split: 8.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:13:5123:477:3923:47
7:39
-
10K
6.21 mi11:38:1348:097:4524:22
7:51
+0:12
15K
9.32 mi12:02:571:12:537:4924:44
7:58
+0:07
20K
12.43 mi12:28:131:38:097:5425:16
8:08
+0:10
Half
13.11 mi12:33:421:43:387:545:29
8:02
-0:06
25K
15.53 mi12:53:422:03:387:5820:00
8:15
+0:13
30K
18.64 mi13:20:022:29:588:0326:20
8:29
+0:14
20M
20.00 mi13:31:422:41:388:0511:40
8:35
+0:06
21M
21.00 mi13:41:062:51:028:099:24
9:24
+0:49
35K
21.75 mi13:47:212:57:178:096:15
8:21
-1:03
23M
23.00 mi13:58:183:08:148:1110:57
8:45
+0:24
24M
24.00 mi14:06:523:16:488:128:34
8:34
-0:11
40K
24.85 mi14:14:033:23:598:127:11
8:24
-0:10
25.2M
25.20 mi14:17:213:27:178:143:18
9:34
+1:10
Finish
26.22 mi14:25:373:35:338:148:16
8:07
-1:27

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

7:39 /mi

Average Pace

8:14 /mi

Slowest Pace

9:34 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:18:22

36% of race

Time at Steady Pace

1:53:32

53% of race

Time at Slower Pace

23:39

11% of race

Average Pace: 8:13 /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 mi11:13:5123:477:3923:47
7:39
#11083
10K
6.21 mi11:38:1348:097:4524:22
7:51
#12271
15K
9.32 mi12:02:571:12:537:4924:44
7:58
#12875
20K
12.43 mi12:28:131:38:097:5425:16
8:08
#13307
Half
13.11 mi12:33:421:43:387:545:29
8:02
#13364
25K
15.53 mi12:53:422:03:387:5820:00
8:15
#13543
30K
18.64 mi13:20:022:29:588:0326:20
8:29
#13634
20M
20.00 mi13:31:422:41:388:0511:40
8:35
#13684
21M
21.00 mi13:41:062:51:028:099:24
9:24
#13800
35K
21.75 mi13:47:212:57:178:096:15
8:21
#13823
23M
23.00 mi13:58:183:08:148:1110:57
8:45
#13842
24M
24.00 mi14:06:523:16:488:128:34
8:34
#13877
40K
24.85 mi14:14:033:23:598:127:11
8:24
#13822
25.2M
25.20 mi14:17:213:27:178:143:18
9:34
#13844
Finish
26.22 mi14:25:373:35:338:148:16
8:07
#13788
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi110832379237914080(Top 53%)4130(Top 36%)4130(Top 85%)
10K6.21 mi3.10 mi12271-11883019-6403019-64013510(Top 51%)3734(Top 33%)3734(Top 76%)
15K9.32 mi3.11 mi12875-6043385-3663385-36614080(Top 53%)4130(Top 36%)4130(Top 85%)
20K12.43 mi3.11 mi13307-4323665-2803665-28014464(Top 54%)4377(Top 38%)4377(Top 90%)
Half13.11 mi0.68 mi13364-573702-373702-3714698(Top 55%)4494(Top 39%)4494(Top 92%)
25K15.53 mi2.42 mi13543-1793830-1283830-12814582(Top 55%)4570(Top 40%)4570(Top 94%)
30K18.64 mi3.11 mi13634-913918-883918-8814159(Top 53%)4425(Top 39%)4425(Top 91%)
20M20.00 mi1.36 mi13684-503970-523970-5214171(Top 53%)4513(Top 40%)4513(Top 92%)
21M21.00 mi1.00 mi13800-1164058-884058-8815473(Top 58%)5328(Top 47%)5328(Top 109%)
35K21.75 mi0.75 mi13823-234086-284086-2814452(Top 54%)4804(Top 42%)4804(Top 98%)
23M23.00 mi1.25 mi13842-194128-424128-4214679(Top 55%)4992(Top 44%)4992(Top 102%)
24M24.00 mi1.00 mi13877-354184-564184-5614878(Top 56%)5155(Top 45%)5155(Top 106%)
40K24.85 mi0.85 mi13822+554164+204164+2012741(Top 48%)4079(Top 36%)4079(Top 84%)
25.2M25.20 mi0.35 mi13844-224182-184182-1815517(Top 58%)5578(Top 49%)5578(Top 114%)
Finish26.22 mi1.02 mi13788+564163+194163+1912880(Top 48%)4151(Top 36%)4151(Top 85%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 53%
×21stories
+97ft-345ft

Overall

14080

Females

4130

F18-39

4130

5K→10K

3.1 - 6.2 mi

Top 51%
×5stories
+79ft-138ft

Overall

13510

Females

3734

F18-39

3734

10K→15K

6.2 - 9.3 mi

Top 53%
×3stories
+67ft-78ft

Overall

14080

Females

4130

F18-39

4130

15K→20K

9.3 - 12.4 mi

Top 54%
×5stories
+106ft-86ft

Overall

14464

Females

4377

F18-39

4377

20K→Half

12.4 - 13.1 mi

Top 55%
×2stories
+19ft-37ft

Overall

14698

Females

4494

F18-39

4494

Half→25K

13.1 - 15.5 mi

Top 55%
×4stories
+66ft-88ft

Overall

14582

Females

4570

F18-39

4570

25K→30K

15.5 - 18.6 mi

Top 53%
×9stories
+181ft-148ft

Overall

14159

Females

4425

F18-39

4425

30K→20M

18.6 - 20.0 mi

Top 53%
×5stories
+64ft-50ft

Overall

14171

Females

4513

F18-39

4513

20M→21M

20.0 - 21.0 mi

Top 58%
×8stories
+106ft-24ft

Overall

15473

Females

5328

F18-39

5328

21M→35K

21.0 - 21.8 mi

Top 54%
×7stories
+17ft-86ft

Overall

14452

Females

4804

F18-39

4804

35K→23M

21.8 - 23.0 mi

Top 55%
×5stories
+23ft-63ft

Overall

14679

Females

4992

F18-39

4992

23M→24M

23.0 - 24.0 mi

Top 56%
×6stories
+12ft-82ft

Overall

14878

Females

5155

F18-39

5155

24M→40K

24.0 - 24.9 mi

Top 48%
×1story
+6ft-20ft

Overall

12741

Females

4079

F18-39

4079

40K→25.2M

24.9 - 25.2 mi

Top 58%
×1story
+13ft-16ft

Overall

15517

Females

5578

F18-39

5578

25.2M→Finish

25.2 - 26.2 mi

Top 48%
×2stories
+22ft-21ft

Overall

12880

Females

4151

F18-39

4151

Passing Analysis

Category:
Athletes Passed
961
Passed By
3666
Net Change
-2705
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11083
5K → 10K441232-1188#11083#12271
10K → 15K52656-604#12271#12875
15K → 20K80512-432#12875#13307
20K → Half1774-57#13307#13364
Half → 25K84263-179#13364#13543
25K → 30K161252-91#13543#13634
30K → 20M83133-50#13634#13684
20M → 21M56172-116#13684#13800
21M → 35K4467-23#13800#13823
35K → 23M7493-19#13823#13842
23M → 24M5590-35#13842#13877
24M → 40K9439+55#13877#13822
40K → 25.2M1739-22#13822#13844
25.2M → Finish10044+56#13844#13788
TOTALS9613666-2705
📊

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