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BOSTON MARATHON 2023

Kathrine Heroy

Bib: 20804•F

NC

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Top 37%
Masters (Masters Women)
#0 / 6539
Top 23%
Division (F40-44)
#0 / 1878
Top 42%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
25:57
Rank: #16518
Start → 5K
25:57 | 8:21/mi
10K· 6.21 mi
51:38
Rank: #16576 (-58)
5K → 10K
25:41 | 8:16/mi
15K· 9.32 mi
1:17:13
Rank: #16399 (+177)
10K → 15K
25:35 | 8:14/mi
20K· 12.43 mi
1:42:53
Rank: #16114 (+285)
15K → 20K
25:40 | 8:16/mi
Half· 13.11 mi
1:48:28
Rank: #16085 (+29)
20K → Half
5:35 | 8:11/mi
25K· 15.53 mi
2:08:08
Rank: #15677 (+408)
Half → 25K
19:40 | 8:07/mi
30K· 18.64 mi
2:34:06
Rank: #15236 (+441)
25K → 30K
25:58 | 8:21/mi
20M
2:45:29
Rank: #15058 (+178)
30K → 20M
11:23 | 8:23/mi
21M
2:53:58
Rank: #14782 (+276)
20M → 21M
8:29 | 8:29/mi
35K· 21.75 mi
3:00:05
Rank: #14712 (+70)
21M → 35K
6:07 | 8:11/mi
23M
3:10:26
Rank: #14528 (+184)
35K → 23M
10:21 | 8:16/mi
24M
3:18:23
Rank: #14367 (+161)
23M → 24M
7:57 | 7:57/mi
40K· 24.85 mi
3:25:08
Rank: #14160 (+207)
24M → 40K
6:45 | 7:54/mi
25.2M
3:28:00
Rank: #14048 (+112)
40K → 25.2M
2:52 | 8:19/mi
Finish· 26.22 mi
3:35:47
Rank: #13850 (+198)
25.2M → Finish
7:47 | 7:38/mi

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:48:28
Pace8:16 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:47:19
Pace8:11 /mi
📊Negative Split: 1.1% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:18:4225:578:2125:57
8:21
-
10K
6.21 mi11:44:2351:388:1925:41
8:16
-0:05
15K
9.32 mi12:09:581:17:138:1725:35
8:14
-0:02
20K
12.43 mi12:35:381:42:538:1725:40
8:16
+0:02
Half
13.11 mi12:41:131:48:288:165:35
8:11
-0:05
25K
15.53 mi13:00:532:08:088:1519:40
8:07
-0:04
30K
18.64 mi13:26:512:34:068:1625:58
8:21
+0:14
20M
20.00 mi13:38:142:45:298:1611:23
8:23
+0:02
21M
21.00 mi13:46:432:53:588:178:29
8:29
+0:06
35K
21.75 mi13:52:503:00:058:176:07
8:11
-0:18
23M
23.00 mi14:03:113:10:268:1710:21
8:16
+0:05
24M
24.00 mi14:11:083:18:238:167:57
7:57
-0:19
40K
24.85 mi14:17:533:25:088:156:45
7:54
-0:03
25.2M
25.20 mi14:20:453:28:008:152:52
8:19
+0:25
Finish
26.22 mi14:28:323:35:478:147:47
7:38
-0:41

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

7:38 /mi

Average Pace

8:14 /mi

Slowest Pace

8:29 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:27:18

96% of race

Time at Steady Pace

8:29

4% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:14 /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 mi11:18:4225:578:2125:57
8:21
#16518
10K
6.21 mi11:44:2351:388:1925:41
8:16
#16576
15K
9.32 mi12:09:581:17:138:1725:35
8:14
#16399
20K
12.43 mi12:35:381:42:538:1725:40
8:16
#16114
Half
13.11 mi12:41:131:48:288:165:35
8:11
#16085
25K
15.53 mi13:00:532:08:088:1519:40
8:07
#15677
30K
18.64 mi13:26:512:34:068:1625:58
8:21
#15236
20M
20.00 mi13:38:142:45:298:1611:23
8:23
#15058
21M
21.00 mi13:46:432:53:588:178:29
8:29
#14782
35K
21.75 mi13:52:503:00:058:176:07
8:11
#14712
23M
23.00 mi14:03:113:10:268:1710:21
8:16
#14528
24M
24.00 mi14:11:083:18:238:167:57
7:57
#14367
40K
24.85 mi14:17:533:25:088:156:45
7:54
#14160
25.2M
25.20 mi14:20:453:28:008:152:52
8:19
#14048
Finish
26.22 mi14:28:323:35:478:147:47
7:38
#13850
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi165185611561116107(Top 61%)5353(Top 47%)5353(Top 285%)
10K6.21 mi3.10 mi16576-585623-125623-1216698(Top 63%)5688(Top 50%)5688(Top 303%)
15K9.32 mi3.11 mi16399+1775527+965527+9616107(Top 61%)5353(Top 47%)5353(Top 285%)
20K12.43 mi3.11 mi16114+2855374+1535374+15315358(Top 58%)4936(Top 43%)4936(Top 263%)
Half13.11 mi0.68 mi16085+295365+95365+915679(Top 59%)5085(Top 45%)5085(Top 271%)
25K15.53 mi2.42 mi15677+4085135+2305135+23013591(Top 51%)3977(Top 35%)3977(Top 212%)
30K18.64 mi3.11 mi15236+4414904+2314904+23113418(Top 50%)3986(Top 35%)3986(Top 212%)
20M20.00 mi1.36 mi15058+1784812+924812+9212896(Top 48%)3806(Top 33%)3806(Top 203%)
21M21.00 mi1.00 mi14782+2764654+1584654+15810434(Top 39%)2605(Top 23%)2605(Top 139%)
35K21.75 mi0.75 mi14712+704630+244630+2413311(Top 50%)4173(Top 37%)4173(Top 222%)
23M23.00 mi1.25 mi14528+1844541+894541+8911682(Top 44%)3356(Top 29%)3356(Top 179%)
24M24.00 mi1.00 mi14367+1614470+714470+7110937(Top 41%)3068(Top 27%)3068(Top 163%)
40K24.85 mi0.85 mi14160+2074373+974373+979371(Top 35%)2353(Top 21%)2353(Top 125%)
25.2M25.20 mi0.35 mi14048+1124307+664307+668519(Top 32%)2070(Top 18%)2070(Top 110%)
Finish26.22 mi1.02 mi13850+1984201+1064201+1069595(Top 36%)2525(Top 22%)2525(Top 134%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 61%
×21stories
+97ft-345ft

Overall

16107

Females

5353

F40-44

5353

5K→10K

3.1 - 6.2 mi

Top 63%
×5stories
+79ft-138ft

Overall

16698

Females

5688

F40-44

5688

10K→15K

6.2 - 9.3 mi

Top 61%
×3stories
+67ft-78ft

Overall

16107

Females

5353

F40-44

5353

15K→20K

9.3 - 12.4 mi

Top 58%
×5stories
+106ft-86ft

Overall

15358

Females

4936

F40-44

4936

20K→Half

12.4 - 13.1 mi

Top 59%
×2stories
+19ft-37ft

Overall

15679

Females

5085

F40-44

5085

Half→25K

13.1 - 15.5 mi

Top 51%
×4stories
+66ft-88ft

Overall

13591

Females

3977

F40-44

3977

25K→30K

15.5 - 18.6 mi

Top 50%
×9stories
+181ft-148ft

Overall

13418

Females

3986

F40-44

3986

30K→20M

18.6 - 20.0 mi

Top 48%
×5stories
+64ft-50ft

Overall

12896

Females

3806

F40-44

3806

20M→21M

20.0 - 21.0 mi

Top 39%
×8stories
+106ft-24ft

Overall

10434

Females

2605

F40-44

2605

21M→35K

21.0 - 21.8 mi

Top 50%
×7stories
+17ft-86ft

Overall

13311

Females

4173

F40-44

4173

35K→23M

21.8 - 23.0 mi

Top 44%
×5stories
+23ft-63ft

Overall

11682

Females

3356

F40-44

3356

23M→24M

23.0 - 24.0 mi

Top 41%
×6stories
+12ft-82ft

Overall

10937

Females

3068

F40-44

3068

24M→40K

24.0 - 24.9 mi

Top 35%
×1story
+6ft-20ft

Overall

9371

Females

2353

F40-44

2353

40K→25.2M

24.9 - 25.2 mi

Top 32%
×1story
+13ft-16ft

Overall

8519

Females

2070

F40-44

2070

25.2M→Finish

25.2 - 26.2 mi

Top 36%
×2stories
+22ft-21ft

Overall

9595

Females

2525

F40-44

2525

Passing Analysis

Category:
Athletes Passed
3268
Passed By
600
Net Change
+2668
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#16518
5K → 10K273331-58#16518#16576
10K → 15K293116+177#16576#16399
15K → 20K33348+285#16399#16114
20K → Half5223+29#16114#16085
Half → 25K4157+408#16085#15677
25K → 30K45413+441#15677#15236
30K → 20M19315+178#15236#15058
20M → 21M2760+276#15058#14782
21M → 35K8717+70#14782#14712
35K → 23M19511+184#14712#14528
23M → 24M17110+161#14528#14367
24M → 40K2081+207#14367#14160
40K → 25.2M1131+112#14160#14048
25.2M → Finish2057+198#14048#13850
TOTALS3268600+2668
📊

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