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BOSTON MARATHON 2023

Katherine Kornaus

Bib: 13146•F

WI

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 33%
Gender (Female)
#0 / 11423
Top 13%
Division (F18-39)
#0 / 4884
Top 25%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:34
Rank: #10410
Start → 5K
23:34 | 7:35/mi
10K· 6.21 mi
47:01
Rank: #10613 (-203)
5K → 10K
23:27 | 7:33/mi
15K· 9.32 mi
1:10:17
Rank: #10424 (+189)
10K → 15K
23:16 | 7:29/mi
20K· 12.43 mi
1:33:39
Rank: #10153 (+271)
15K → 20K
23:22 | 7:31/mi
Half· 13.11 mi
1:38:42
Rank: #10092 (+61)
20K → Half
5:03 | 7:24/mi
25K· 15.53 mi
1:56:50
Rank: #9823 (+269)
Half → 25K
18:08 | 7:29/mi
30K· 18.64 mi
2:20:30
Rank: #9459 (+364)
25K → 30K
23:40 | 7:37/mi
20M
2:30:48
Rank: #9274 (+185)
30K → 20M
10:18 | 7:35/mi
21M
2:38:43
Rank: #9092 (+182)
20M → 21M
7:55 | 7:55/mi
35K· 21.75 mi
2:44:16
Rank: #9044 (+48)
21M → 35K
5:33 | 7:25/mi
23M
2:53:57
Rank: #8950 (+94)
35K → 23M
9:41 | 7:44/mi
24M
3:01:27
Rank: #8861 (+89)
23M → 24M
7:30 | 7:30/mi
40K· 24.85 mi
3:07:57
Rank: #8801 (+60)
24M → 40K
6:30 | 7:36/mi
25.2M
3:10:45
Rank: #8751 (+50)
40K → 25.2M
2:48 | 8:07/mi
Finish· 26.22 mi
3:18:22
Rank: #8711 (+40)
25.2M → Finish
7:37 | 7:28/mi

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:38:42
Pace7:32 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:39:40
Pace7:36 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:51:4323:347:3523:34
7:35
-
10K
6.21 mi11:15:1047:017:3423:27
7:33
-0:02
15K
9.32 mi11:38:261:10:177:3223:16
7:29
-0:04
20K
12.43 mi12:01:481:33:397:3223:22
7:31
+0:02
Half
13.11 mi12:06:511:38:427:325:03
7:24
-0:07
25K
15.53 mi12:24:591:56:507:3118:08
7:29
+0:05
30K
18.64 mi12:48:392:20:307:3223:40
7:37
+0:08
20M
20.00 mi12:58:572:30:487:3210:18
7:35
-0:02
21M
21.00 mi13:06:522:38:437:337:55
7:55
+0:20
35K
21.75 mi13:12:252:44:167:335:33
7:25
-0:30
23M
23.00 mi13:22:062:53:577:349:41
7:44
+0:19
24M
24.00 mi13:29:363:01:277:347:30
7:30
-0:14
40K
24.85 mi13:36:063:07:577:346:30
7:36
+0:06
25.2M
25.20 mi13:38:543:10:457:342:48
8:07
+0:31
Finish
26.22 mi13:46:313:18:227:347:37
7:28
-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

7:24 /mi

Average Pace

7:34 /mi

Slowest Pace

8:07 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:07:39

95% of race

Time at Steady Pace

10:43

5% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:34 /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 mi10:51:4323:347:3523:34
7:35
#10410
10K
6.21 mi11:15:1047:017:3423:27
7:33
#10613
15K
9.32 mi11:38:261:10:177:3223:16
7:29
#10424
20K
12.43 mi12:01:481:33:397:3223:22
7:31
#10153
Half
13.11 mi12:06:511:38:427:325:03
7:24
#10092
25K
15.53 mi12:24:591:56:507:3118:08
7:29
#9823
30K
18.64 mi12:48:392:20:307:3223:40
7:37
#9459
20M
20.00 mi12:58:572:30:487:3210:18
7:35
#9274
21M
21.00 mi13:06:522:38:437:337:55
7:55
#9092
35K
21.75 mi13:12:252:44:167:335:33
7:25
#9044
23M
23.00 mi13:22:062:53:577:349:41
7:44
#8950
24M
24.00 mi13:29:363:01:277:347:30
7:30
#8861
40K
24.85 mi13:36:063:07:577:346:30
7:36
#8801
25.2M
25.20 mi13:38:543:10:457:342:48
8:07
#8751
Finish
26.22 mi13:46:313:18:227:347:37
7:28
#8711
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi104102040204010096(Top 38%)1883(Top 16%)1883(Top 39%)
10K6.21 mi3.10 mi10613-2032123-832123-8310861(Top 41%)2235(Top 20%)2235(Top 46%)
15K9.32 mi3.11 mi10424+1892022+1012022+10110096(Top 38%)1883(Top 16%)1883(Top 39%)
20K12.43 mi3.11 mi10153+2711901+1211901+1219478(Top 36%)1677(Top 15%)1677(Top 34%)
Half13.11 mi0.68 mi10092+611875+261875+269478(Top 36%)1658(Top 15%)1658(Top 34%)
25K15.53 mi2.42 mi9823+2691775+1001775+1008640(Top 32%)1404(Top 12%)1404(Top 29%)
30K18.64 mi3.11 mi9459+3641670+1051670+1058081(Top 30%)1345(Top 12%)1345(Top 28%)
20M20.00 mi1.36 mi9274+1851622+481622+487387(Top 28%)1180(Top 10%)1180(Top 24%)
21M21.00 mi1.00 mi9092+1821572+501572+506869(Top 26%)1088(Top 10%)1088(Top 22%)
35K21.75 mi0.75 mi9044+481559+131559+137982(Top 30%)1489(Top 13%)1489(Top 30%)
23M23.00 mi1.25 mi8950+941546+131546+137976(Top 30%)1573(Top 14%)1573(Top 32%)
24M24.00 mi1.00 mi8861+891545+11545+17734(Top 29%)1574(Top 14%)1574(Top 32%)
40K24.85 mi0.85 mi8801+601539+61539+67372(Top 28%)1511(Top 13%)1511(Top 31%)
25.2M25.20 mi0.35 mi8751+501531+81531+87288(Top 27%)1532(Top 13%)1532(Top 31%)
Finish26.22 mi1.02 mi8711+401530+11530+18384(Top 31%)1985(Top 17%)1985(Top 41%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 38%
×21stories
+97ft-345ft

Overall

10096

Females

1883

F18-39

1883

5K→10K

3.1 - 6.2 mi

Top 41%
×5stories
+79ft-138ft

Overall

10861

Females

2235

F18-39

2235

10K→15K

6.2 - 9.3 mi

Top 38%
×3stories
+67ft-78ft

Overall

10096

Females

1883

F18-39

1883

15K→20K

9.3 - 12.4 mi

Top 36%
×5stories
+106ft-86ft

Overall

9478

Females

1677

F18-39

1677

20K→Half

12.4 - 13.1 mi

Top 36%
×2stories
+19ft-37ft

Overall

9478

Females

1658

F18-39

1658

Half→25K

13.1 - 15.5 mi

Top 32%
×4stories
+66ft-88ft

Overall

8640

Females

1404

F18-39

1404

25K→30K

15.5 - 18.6 mi

Top 30%
×9stories
+181ft-148ft

Overall

8081

Females

1345

F18-39

1345

30K→20M

18.6 - 20.0 mi

Top 28%
×5stories
+64ft-50ft

Overall

7387

Females

1180

F18-39

1180

20M→21M

20.0 - 21.0 mi

Top 26%
×8stories
+106ft-24ft

Overall

6869

Females

1088

F18-39

1088

21M→35K

21.0 - 21.8 mi

Top 30%
×7stories
+17ft-86ft

Overall

7982

Females

1489

F18-39

1489

35K→23M

21.8 - 23.0 mi

Top 30%
×5stories
+23ft-63ft

Overall

7976

Females

1573

F18-39

1573

23M→24M

23.0 - 24.0 mi

Top 29%
×6stories
+12ft-82ft

Overall

7734

Females

1574

F18-39

1574

24M→40K

24.0 - 24.9 mi

Top 28%
×1story
+6ft-20ft

Overall

7372

Females

1511

F18-39

1511

40K→25.2M

24.9 - 25.2 mi

Top 27%
×1story
+13ft-16ft

Overall

7288

Females

1532

F18-39

1532

25.2M→Finish

25.2 - 26.2 mi

Top 31%
×2stories
+22ft-21ft

Overall

8384

Females

1985

F18-39

1985

Passing Analysis

Category:
Athletes Passed
2465*
Passed By
766
Net Change
+1699
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10410
5K → 10K195*398-203#10410#10613
10K → 15K305116+189#10613#10424
15K → 20K307*36+271#10424#10153
20K → Half74*13+61#10153#10092
Half → 25K285*16+269#10092#9823
25K → 30K386*22+364#9823#9459
30K → 20M19510+185#9459#9274
20M → 21M19311+182#9274#9092
21M → 35K6820+48#9092#9044
35K → 23M12228+94#9044#8950
23M → 24M11122+89#8950#8861
24M → 40K8828+60#8861#8801
40K → 25.2M6212+50#8801#8751
25.2M → Finish7434+40#8751#8711
TOTALS2465*766+1699

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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