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BOSTON MARATHON 2023

Emily Katz

Bib: 25665•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
28:29
Rank: #21117
Start → 5K
28:29 | 9:10/mi
10K· 6.21 mi
56:20
Rank: #20919 (+198)
5K → 10K
27:51 | 8:58/mi
15K· 9.32 mi
1:23:23
Rank: #20328 (+591)
10K → 15K
27:03 | 8:42/mi
20K· 12.43 mi
1:50:10
Rank: #19670 (+658)
15K → 20K
26:47 | 8:37/mi
Half· 13.11 mi
1:56:03
Rank: #19610 (+60)
20K → Half
5:53 | 8:37/mi
25K· 15.53 mi
2:17:20
Rank: #19309 (+301)
Half → 25K
21:17 | 8:47/mi
30K· 18.64 mi
2:44:52
Rank: #18816 (+493)
25K → 30K
27:32 | 8:52/mi
20M
2:56:54
Rank: #18582 (+234)
30K → 20M
12:02 | 8:51/mi
21M
3:06:15
Rank: #18370 (+212)
20M → 21M
9:21 | 9:21/mi
35K· 21.75 mi
3:12:44
Rank: #18283 (+87)
21M → 35K
6:29 | 8:40/mi
23M
3:23:50
Rank: #18111 (+172)
35K → 23M
11:06 | 8:52/mi
24M
3:32:25
Rank: #17984 (+127)
23M → 24M
8:35 | 8:35/mi
40K· 24.85 mi
3:39:50
Rank: #17864 (+120)
24M → 40K
7:25 | 8:40/mi
25.2M
3:43:08
Rank: #17831 (+33)
40K → 25.2M
3:18 | 9:34/mi
Finish· 26.22 mi
3:51:49
Rank: #17754 (+77)
25.2M → Finish
8:41 | 8:31/mi

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:56:03
Pace8:51 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:55:46
Pace8:50 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:51:5228:299:1028:29
9:10
-
10K
6.21 mi12:19:4356:209:0427:51
8:58
-0:12
15K
9.32 mi12:46:461:23:238:5727:03
8:42
-0:16
20K
12.43 mi13:13:331:50:108:5226:47
8:37
-0:05
Half
13.11 mi13:19:261:56:038:515:53
8:37
0:00
25K
15.53 mi13:40:432:17:208:5021:17
8:47
+0:10
30K
18.64 mi14:08:152:44:528:5127:32
8:52
+0:05
20M
20.00 mi14:20:172:56:548:5112:02
8:51
-0:01
21M
21.00 mi14:29:383:06:158:529:21
9:21
+0:30
35K
21.75 mi14:36:073:12:448:526:29
8:40
-0:41
23M
23.00 mi14:47:133:23:508:5211:06
8:52
+0:12
24M
24.00 mi14:55:483:32:258:518:35
8:35
-0:17
40K
24.85 mi15:03:133:39:508:517:25
8:40
+0:05
25.2M
25.20 mi15:06:313:43:088:513:18
9:34
+0:54
Finish
26.22 mi15:15:123:51:498:518:41
8:31
-1:03

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

8:31 /mi

Average Pace

8:51 /mi

Slowest Pace

9:34 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:48:31

99% of race

Time at Steady Pace

3:18

1% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:50 /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 mi11:51:5228:299:1028:29
9:10
#21117
10K
6.21 mi12:19:4356:209:0427:51
8:58
#20919
15K
9.32 mi12:46:461:23:238:5727:03
8:42
#20328
20K
12.43 mi13:13:331:50:108:5226:47
8:37
#19670
Half
13.11 mi13:19:261:56:038:515:53
8:37
#19610
25K
15.53 mi13:40:432:17:208:5021:17
8:47
#19309
30K
18.64 mi14:08:152:44:528:5127:32
8:52
#18816
20M
20.00 mi14:20:172:56:548:5112:02
8:51
#18582
21M
21.00 mi14:29:383:06:158:529:21
9:21
#18370
35K
21.75 mi14:36:073:12:448:526:29
8:40
#18283
23M
23.00 mi14:47:133:23:508:5211:06
8:52
#18111
24M
24.00 mi14:55:483:32:258:518:35
8:35
#17984
40K
24.85 mi15:03:133:39:508:517:25
8:40
#17864
25.2M
25.20 mi15:06:313:43:088:513:18
9:34
#17831
Finish
26.22 mi15:15:123:51:498:518:41
8:31
#17754
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi211178429842919020(Top 71%)7115(Top 62%)7115(Top 146%)
10K6.21 mi3.10 mi20919+1988276+1538276+15320729(Top 78%)8108(Top 71%)8108(Top 166%)
15K9.32 mi3.11 mi20328+5917920+3567920+35619020(Top 71%)7115(Top 62%)7115(Top 146%)
20K12.43 mi3.11 mi19670+6587525+3957525+39517649(Top 66%)6321(Top 55%)6321(Top 129%)
Half13.11 mi0.68 mi19610+607487+387487+3818406(Top 69%)6740(Top 59%)6740(Top 138%)
25K15.53 mi2.42 mi19309+3017311+1767311+17617834(Top 67%)6478(Top 57%)6478(Top 133%)
30K18.64 mi3.11 mi18816+4937038+2737038+27316455(Top 62%)5761(Top 50%)5761(Top 118%)
20M20.00 mi1.36 mi18582+2346921+1176921+11715785(Top 59%)5449(Top 48%)5449(Top 112%)
21M21.00 mi1.00 mi18370+2126811+1106811+11015291(Top 57%)5228(Top 46%)5228(Top 107%)
35K21.75 mi0.75 mi18283+876770+416770+4116285(Top 61%)5870(Top 51%)5870(Top 120%)
23M23.00 mi1.25 mi18111+1726677+936677+9315389(Top 58%)5398(Top 47%)5398(Top 111%)
24M24.00 mi1.00 mi17984+1276616+616616+6115009(Top 56%)5247(Top 46%)5247(Top 107%)
40K24.85 mi0.85 mi17864+1206548+686548+6814417(Top 54%)4989(Top 44%)4989(Top 102%)
25.2M25.20 mi0.35 mi17831+336535+136535+1315594(Top 59%)5655(Top 50%)5655(Top 116%)
Finish26.22 mi1.02 mi17754+776505+306505+3015579(Top 59%)5584(Top 49%)5584(Top 114%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 71%
×21stories
+97ft-345ft

Overall

19020

Females

7115

F18-39

7115

5K→10K

3.1 - 6.2 mi

Top 78%
×5stories
+79ft-138ft

Overall

20729

Females

8108

F18-39

8108

10K→15K

6.2 - 9.3 mi

Top 71%
×3stories
+67ft-78ft

Overall

19020

Females

7115

F18-39

7115

15K→20K

9.3 - 12.4 mi

Top 66%
×5stories
+106ft-86ft

Overall

17649

Females

6321

F18-39

6321

20K→Half

12.4 - 13.1 mi

Top 69%
×2stories
+19ft-37ft

Overall

18406

Females

6740

F18-39

6740

Half→25K

13.1 - 15.5 mi

Top 67%
×4stories
+66ft-88ft

Overall

17834

Females

6478

F18-39

6478

25K→30K

15.5 - 18.6 mi

Top 62%
×9stories
+181ft-148ft

Overall

16455

Females

5761

F18-39

5761

30K→20M

18.6 - 20.0 mi

Top 59%
×5stories
+64ft-50ft

Overall

15785

Females

5449

F18-39

5449

20M→21M

20.0 - 21.0 mi

Top 57%
×8stories
+106ft-24ft

Overall

15291

Females

5228

F18-39

5228

21M→35K

21.0 - 21.8 mi

Top 61%
×7stories
+17ft-86ft

Overall

16285

Females

5870

F18-39

5870

35K→23M

21.8 - 23.0 mi

Top 58%
×5stories
+23ft-63ft

Overall

15389

Females

5398

F18-39

5398

23M→24M

23.0 - 24.0 mi

Top 56%
×6stories
+12ft-82ft

Overall

15009

Females

5247

F18-39

5247

24M→40K

24.0 - 24.9 mi

Top 54%
×1story
+6ft-20ft

Overall

14417

Females

4989

F18-39

4989

40K→25.2M

24.9 - 25.2 mi

Top 59%
×1story
+13ft-16ft

Overall

15594

Females

5655

F18-39

5655

25.2M→Finish

25.2 - 26.2 mi

Top 59%
×2stories
+22ft-21ft

Overall

15579

Females

5584

F18-39

5584

Passing Analysis

Category:
Athletes Passed
3711
Passed By
348
Net Change
+3363
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#21117
5K → 10K396198+198#21117#20919
10K → 15K61524+591#20919#20328
15K → 20K6635+658#20328#19670
20K → Half7111+60#19670#19610
Half → 25K31817+301#19610#19309
25K → 30K50310+493#19309#18816
30K → 20M2428+234#18816#18582
20M → 21M22311+212#18582#18370
21M → 35K903+87#18370#18283
35K → 23M18614+172#18283#18111
23M → 24M1369+127#18111#17984
24M → 40K1288+120#17984#17864
40K → 25.2M4310+33#17864#17831
25.2M → Finish9720+77#17831#17754
TOTALS3711348+3363
📊

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