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BOSTON MARATHON 2023

Heather Kralj

Bib: 15741•F

TN

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Top 43%
Masters (Masters Women)
#0 / 6539
Top 31%
Division (F40-44)
#0 / 1878
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
24:43
Rank: #13711
Start → 5K
24:43 | 7:57/mi
10K· 6.21 mi
50:56
Rank: #15822 (-2111)
5K → 10K
26:13 | 8:26/mi
15K· 9.32 mi
1:16:10
Rank: #15619 (+203)
10K → 15K
25:14 | 8:07/mi
20K· 12.43 mi
1:41:53
Rank: #15559 (+60)
15K → 20K
25:43 | 8:17/mi
Half· 13.11 mi
1:47:34
Rank: #15634 (-75)
20K → Half
5:41 | 8:20/mi
25K· 15.53 mi
2:09:25
Rank: #16265 (-631)
Half → 25K
21:51 | 9:01/mi
30K· 18.64 mi
2:35:45
Rank: #15844 (+421)
25K → 30K
26:20 | 8:29/mi
20M
2:47:55
Rank: #15874 (-30)
30K → 20M
12:10 | 8:57/mi
21M
2:57:52
Rank: #15993 (-119)
20M → 21M
9:57 | 9:57/mi
35K· 21.75 mi
3:03:38
Rank: #15772 (+221)
21M → 35K
5:46 | 7:42/mi
23M
3:13:48
Rank: #15471 (+301)
35K → 23M
10:10 | 8:07/mi
24M
3:22:01
Rank: #15343 (+128)
23M → 24M
8:13 | 8:13/mi
40K· 24.85 mi
3:28:58
Rank: #15163 (+180)
24M → 40K
6:57 | 8:08/mi
25.2M
3:32:12
Rank: #15130 (+33)
40K → 25.2M
3:14 | 9:23/mi
Finish· 26.22 mi
3:40:21
Rank: #15026 (+104)
25.2M → Finish
8:09 | 8:00/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:47:34
Pace8:12 /mi
2nd Half
Distance13.11 mi
Time1:52:47
Pace8:36 /mi
📊Positive Split: 4.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:55:3224:437:5724:43
7:57
-
10K
6.21 mi11:21:4550:568:1226:13
8:26
+0:29
15K
9.32 mi11:46:591:16:108:1025:14
8:07
-0:19
20K
12.43 mi12:12:421:41:538:1225:43
8:17
+0:10
Half
13.11 mi12:18:231:47:348:125:41
8:20
+0:03
25K
15.53 mi12:40:142:09:258:2021:51
9:01
+0:41
30K
18.64 mi13:06:342:35:458:2126:20
8:29
-0:32
20M
20.00 mi13:18:442:47:558:2412:10
8:57
+0:28
21M
21.00 mi13:28:412:57:528:289:57
9:57
+1:00
35K
21.75 mi13:34:273:03:388:275:46
7:42
-2:15
23M
23.00 mi13:44:373:13:488:2610:10
8:07
+0:25
24M
24.00 mi13:52:503:22:018:258:13
8:13
+0:06
40K
24.85 mi13:59:473:28:588:246:57
8:08
-0:05
25.2M
25.20 mi14:03:013:32:128:253:14
9:23
+1:15
Finish
26.22 mi14:11:103:40:218:258:09
8:00
-1:23

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

8:25 /mi

Slowest Pace

9:57 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

30:29

14% of race

Time at Steady Pace

2:22:40

65% of race

Time at Slower Pace

47:12

21% of race

Average Pace: 8:24 /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 mi10:55:3224:437:5724:43
7:57
#13711
10K
6.21 mi11:21:4550:568:1226:13
8:26
#15822
15K
9.32 mi11:46:591:16:108:1025:14
8:07
#15619
20K
12.43 mi12:12:421:41:538:1225:43
8:17
#15559
Half
13.11 mi12:18:231:47:348:125:41
8:20
#15634
25K
15.53 mi12:40:142:09:258:2021:51
9:01
#16265
30K
18.64 mi13:06:342:35:458:2126:20
8:29
#15844
20M
20.00 mi13:18:442:47:558:2412:10
8:57
#15874
21M
21.00 mi13:28:412:57:528:289:57
9:57
#15993
35K
21.75 mi13:34:273:03:388:275:46
7:42
#15772
23M
23.00 mi13:44:373:13:488:2610:10
8:07
#15471
24M
24.00 mi13:52:503:22:018:258:13
8:13
#15343
40K
24.85 mi13:59:473:28:588:246:57
8:08
#15163
25.2M
25.20 mi14:03:013:32:128:253:14
9:23
#15130
Finish
26.22 mi14:11:103:40:218:258:09
8:00
#15026
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi137113853385315328(Top 58%)4869(Top 43%)4869(Top 259%)
10K6.21 mi3.10 mi15822-21115176-13235176-132317865(Top 67%)6413(Top 56%)6413(Top 341%)
15K9.32 mi3.11 mi15619+2035047+1295047+12915328(Top 58%)4869(Top 43%)4869(Top 259%)
20K12.43 mi3.11 mi15559+605030+175030+1715489(Top 58%)5027(Top 44%)5027(Top 268%)
Half13.11 mi0.68 mi15634-755081-515081-5116766(Top 63%)5776(Top 51%)5776(Top 308%)
25K15.53 mi2.42 mi16265-6315494-4135494-41319035(Top 72%)7155(Top 63%)7155(Top 381%)
30K18.64 mi3.11 mi15844+4215280+2145280+21414176(Top 53%)4441(Top 39%)4441(Top 236%)
20M20.00 mi1.36 mi15874-305327-475327-4716323(Top 61%)5772(Top 51%)5772(Top 307%)
21M21.00 mi1.00 mi15993-1195410-835410-8317890(Top 67%)6697(Top 59%)6697(Top 357%)
35K21.75 mi0.75 mi15772+2215298+1125298+11210091(Top 38%)2428(Top 21%)2428(Top 129%)
23M23.00 mi1.25 mi15471+3015145+1535145+15310661(Top 40%)2864(Top 25%)2864(Top 153%)
24M24.00 mi1.00 mi15343+1285070+755070+7512785(Top 48%)4024(Top 35%)4024(Top 214%)
40K24.85 mi0.85 mi15163+1804973+974973+9710962(Top 41%)3147(Top 28%)3147(Top 168%)
25.2M25.20 mi0.35 mi15130+334965+84965+814712(Top 55%)5173(Top 45%)5173(Top 275%)
Finish26.22 mi1.02 mi15026+1044926+394926+3912181(Top 46%)3810(Top 33%)3810(Top 203%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 58%
×21stories
+97ft-345ft

Overall

15328

Females

4869

F40-44

4869

5K→10K

3.1 - 6.2 mi

Top 67%
×5stories
+79ft-138ft

Overall

17865

Females

6413

F40-44

6413

10K→15K

6.2 - 9.3 mi

Top 58%
×3stories
+67ft-78ft

Overall

15328

Females

4869

F40-44

4869

15K→20K

9.3 - 12.4 mi

Top 58%
×5stories
+106ft-86ft

Overall

15489

Females

5027

F40-44

5027

20K→Half

12.4 - 13.1 mi

Top 63%
×2stories
+19ft-37ft

Overall

16766

Females

5776

F40-44

5776

Half→25K

13.1 - 15.5 mi

Top 72%
×4stories
+66ft-88ft

Overall

19035

Females

7155

F40-44

7155

25K→30K

15.5 - 18.6 mi

Top 53%
×9stories
+181ft-148ft

Overall

14176

Females

4441

F40-44

4441

30K→20M

18.6 - 20.0 mi

Top 61%
×5stories
+64ft-50ft

Overall

16323

Females

5772

F40-44

5772

20M→21M

20.0 - 21.0 mi

Top 67%
×8stories
+106ft-24ft

Overall

17890

Females

6697

F40-44

6697

21M→35K

21.0 - 21.8 mi

Top 38%
×7stories
+17ft-86ft

Overall

10091

Females

2428

F40-44

2428

35K→23M

21.8 - 23.0 mi

Top 40%
×5stories
+23ft-63ft

Overall

10661

Females

2864

F40-44

2864

23M→24M

23.0 - 24.0 mi

Top 48%
×6stories
+12ft-82ft

Overall

12785

Females

4024

F40-44

4024

24M→40K

24.0 - 24.9 mi

Top 41%
×1story
+6ft-20ft

Overall

10962

Females

3147

F40-44

3147

40K→25.2M

24.9 - 25.2 mi

Top 55%
×1story
+13ft-16ft

Overall

14712

Females

5173

F40-44

5173

25.2M→Finish

25.2 - 26.2 mi

Top 46%
×2stories
+22ft-21ft

Overall

12181

Females

3810

F40-44

3810

Passing Analysis

Category:
Athletes Passed
2145
Passed By
3460
Net Change
-1315
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#13711
5K → 10K112122-2111#13711#15822
10K → 15K29693+203#15822#15619
15K → 20K204144+60#15619#15559
20K → Half1287-75#15559#15634
Half → 25K34665-631#15634#16265
25K → 30K43918+421#16265#15844
30K → 20M88118-30#15844#15874
20M → 21M48167-119#15874#15993
21M → 35K2210+221#15993#15772
35K → 23M3010+301#15772#15471
23M → 24M14113+128#15471#15343
24M → 40K1833+180#15343#15163
40K → 25.2M5017+33#15163#15130
25.2M → Finish11713+104#15130#15026
TOTALS21453460-1315
📊

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