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BOSTON MARATHON 2023

Emily Doerfler

Bib: 16209•F

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0:00
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Overall
#0 / 26622
Top 44%
Gender (Female)
#0 / 11423
Top 26%
Division (F18-39)
#0 / 4884
Top 44%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
24:54
Rank: #14126
Start → 5K
24:54 | 8:01/mi
10K· 6.21 mi
49:38
Rank: #14299 (-173)
5K → 10K
24:44 | 7:58/mi
15K· 9.32 mi
1:14:11
Rank: #14045 (+254)
10K → 15K
24:33 | 7:54/mi
20K· 12.43 mi
1:38:34
Rank: #13552 (+493)
15K → 20K
24:23 | 7:51/mi
Half· 13.11 mi
1:43:49
Rank: #13474 (+78)
20K → Half
5:15 | 7:42/mi
25K· 15.53 mi
2:02:43
Rank: #13041 (+433)
Half → 25K
18:54 | 7:48/mi
30K· 18.64 mi
2:27:24
Rank: #12530 (+511)
25K → 30K
24:41 | 7:57/mi
20M
2:38:12
Rank: #12296 (+234)
30K → 20M
10:48 | 7:57/mi
21M
2:46:47
Rank: #12202 (+94)
20M → 21M
8:35 | 8:35/mi
35K· 21.75 mi
2:52:33
Rank: #12112 (+90)
21M → 35K
5:46 | 7:42/mi
23M
3:02:34
Rank: #11956 (+156)
35K → 23M
10:01 | 8:00/mi
24M
3:10:22
Rank: #11849 (+107)
23M → 24M
7:48 | 7:48/mi
40K· 24.85 mi
3:17:19
Rank: #11796 (+53)
24M → 40K
6:57 | 8:08/mi
25.2M
3:20:17
Rank: #11759 (+37)
40K → 25.2M
2:58 | 8:36/mi
Finish· 26.22 mi
3:28:23
Rank: #11751 (+8)
25.2M → Finish
8:06 | 7:57/mi

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:43:49
Pace7:55 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:44:34
Pace7:59 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:15:0524:548:0124:54
8:01
-
10K
6.21 mi11:39:4949:387:5924:44
7:58
-0:03
15K
9.32 mi12:04:221:14:117:5824:33
7:54
-0:04
20K
12.43 mi12:28:451:38:347:5624:23
7:51
-0:03
Half
13.11 mi12:34:001:43:497:555:15
7:42
-0:09
25K
15.53 mi12:52:542:02:437:5418:54
7:48
+0:06
30K
18.64 mi13:17:352:27:247:5424:41
7:57
+0:09
20M
20.00 mi13:28:232:38:127:5510:48
7:57
0:00
21M
21.00 mi13:36:582:46:477:578:35
8:35
+0:38
35K
21.75 mi13:42:442:52:337:565:46
7:42
-0:53
23M
23.00 mi13:52:453:02:347:5610:01
8:00
+0:18
24M
24.00 mi14:00:333:10:227:567:48
7:48
-0:12
40K
24.85 mi14:07:303:17:197:566:57
8:08
+0:20
25.2M
25.20 mi14:10:283:20:177:572:58
8:36
+0:28
Finish
26.22 mi14:18:343:28:237:578:06
7:57
-0:39

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

7:42 /mi

Average Pace

7:57 /mi

Slowest Pace

8:36 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:16:50

94% of race

Time at Steady Pace

11:33

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:57 /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 mi11:15:0524:548:0124:54
8:01
#14126
10K
6.21 mi11:39:4949:387:5924:44
7:58
#14299
15K
9.32 mi12:04:221:14:117:5824:33
7:54
#14045
20K
12.43 mi12:28:451:38:347:5624:23
7:51
#13552
Half
13.11 mi12:34:001:43:497:555:15
7:42
#13474
25K
15.53 mi12:52:542:02:437:5418:54
7:48
#13041
30K
18.64 mi13:17:352:27:247:5424:41
7:57
#12530
20M
20.00 mi13:28:232:38:127:5510:48
7:57
#12296
21M
21.00 mi13:36:582:46:477:578:35
8:35
#12202
35K
21.75 mi13:42:442:52:337:565:46
7:42
#12112
23M
23.00 mi13:52:453:02:347:5610:01
8:00
#11956
24M
24.00 mi14:00:333:10:227:567:48
7:48
#11849
40K
24.85 mi14:07:303:17:197:566:57
8:08
#11796
25.2M
25.20 mi14:10:283:20:177:572:58
8:36
#11759
Finish
26.22 mi14:18:343:28:237:578:06
7:57
#11751
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi141264104410413561(Top 51%)3808(Top 33%)3808(Top 78%)
10K6.21 mi3.10 mi14299-1734225-1214225-12114502(Top 54%)4356(Top 38%)4356(Top 89%)
15K9.32 mi3.11 mi14045+2544086+1394086+13913561(Top 51%)3808(Top 33%)3808(Top 78%)
20K12.43 mi3.11 mi13552+4933813+2733813+27312164(Top 46%)3066(Top 27%)3066(Top 63%)
Half13.11 mi0.68 mi13474+783768+453768+4511913(Top 45%)2865(Top 25%)2865(Top 59%)
25K15.53 mi2.42 mi13041+4333518+2503518+25011074(Top 42%)2522(Top 22%)2522(Top 52%)
30K18.64 mi3.11 mi12530+5113273+2453273+24510488(Top 39%)2386(Top 21%)2386(Top 49%)
20M20.00 mi1.36 mi12296+2343157+1163157+1169921(Top 37%)2201(Top 19%)2201(Top 45%)
21M21.00 mi1.00 mi12202+943123+343123+3410988(Top 41%)2861(Top 25%)2861(Top 59%)
35K21.75 mi0.75 mi12112+903096+273096+2710062(Top 38%)2400(Top 21%)2400(Top 49%)
23M23.00 mi1.25 mi11956+1563034+623034+629778(Top 37%)2405(Top 21%)2405(Top 49%)
24M24.00 mi1.00 mi11849+1072981+532981+539835(Top 37%)2520(Top 22%)2520(Top 52%)
40K24.85 mi0.85 mi11796+532979+22979+210920(Top 41%)3106(Top 27%)3106(Top 64%)
25.2M25.20 mi0.35 mi11759+372968+112968+1110237(Top 38%)2817(Top 25%)2817(Top 58%)
Finish26.22 mi1.02 mi11751+82983-152983-1511754(Top 44%)3574(Top 31%)3574(Top 73%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 51%
×21stories
+97ft-345ft

Overall

13561

Females

3808

F18-39

3808

5K→10K

3.1 - 6.2 mi

Top 54%
×5stories
+79ft-138ft

Overall

14502

Females

4356

F18-39

4356

10K→15K

6.2 - 9.3 mi

Top 51%
×3stories
+67ft-78ft

Overall

13561

Females

3808

F18-39

3808

15K→20K

9.3 - 12.4 mi

Top 46%
×5stories
+106ft-86ft

Overall

12164

Females

3066

F18-39

3066

20K→Half

12.4 - 13.1 mi

Top 45%
×2stories
+19ft-37ft

Overall

11913

Females

2865

F18-39

2865

Half→25K

13.1 - 15.5 mi

Top 42%
×4stories
+66ft-88ft

Overall

11074

Females

2522

F18-39

2522

25K→30K

15.5 - 18.6 mi

Top 39%
×9stories
+181ft-148ft

Overall

10488

Females

2386

F18-39

2386

30K→20M

18.6 - 20.0 mi

Top 37%
×5stories
+64ft-50ft

Overall

9921

Females

2201

F18-39

2201

20M→21M

20.0 - 21.0 mi

Top 41%
×8stories
+106ft-24ft

Overall

10988

Females

2861

F18-39

2861

21M→35K

21.0 - 21.8 mi

Top 38%
×7stories
+17ft-86ft

Overall

10062

Females

2400

F18-39

2400

35K→23M

21.8 - 23.0 mi

Top 37%
×5stories
+23ft-63ft

Overall

9778

Females

2405

F18-39

2405

23M→24M

23.0 - 24.0 mi

Top 37%
×6stories
+12ft-82ft

Overall

9835

Females

2520

F18-39

2520

24M→40K

24.0 - 24.9 mi

Top 41%
×1story
+6ft-20ft

Overall

10920

Females

3106

F18-39

3106

40K→25.2M

24.9 - 25.2 mi

Top 38%
×1story
+13ft-16ft

Overall

10237

Females

2817

F18-39

2817

25.2M→Finish

25.2 - 26.2 mi

Top 44%
×2stories
+22ft-21ft

Overall

11754

Females

3574

F18-39

3574

Passing Analysis

Category:
Athletes Passed
3101
Passed By
726
Net Change
+2375
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#14126
5K → 10K202375-173#14126#14299
10K → 15K33379+254#14299#14045
15K → 20K50815+493#14045#13552
20K → Half846+78#13552#13474
Half → 25K44613+433#13474#13041
25K → 30K5209+511#13041#12530
30K → 20M24612+234#12530#12296
20M → 21M14147+94#12296#12202
21M → 35K10111+90#12202#12112
35K → 23M17418+156#12112#11956
23M → 24M12720+107#11956#11849
24M → 40K9340+53#11849#11796
40K → 25.2M447+37#11796#11759
25.2M → Finish8274+8#11759#11751
TOTALS3101726+2375
📊

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