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BOSTON MARATHON 2023

Katherine Bukis

Bib: 15125•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

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
9:14/mi
28:42
↑ 97↓ 3451.5%
10K· 6.21 mi
9:25/mi
57:58
↑ 79↓ 1380.4%
15K· 9.32 mi
9:12/mi
1:26:34
↑ 67↓ 78
20K· 12.43 mi
9:11/mi
1:55:07
↑ 106↓ 860.1%
Half· 13.11 mi
9:18/mi
2:01:28
↑ 19↓ 370.5%
25K· 15.53 mi
9:20/mi
2:24:05
↑ 66↓ 880.2%
30K· 18.64 mi
9:45/mi
2:54:22
↑ 181↓ 1480.2%
20M
9:49/mi
3:07:43
↑ 64↓ 500.2%
21M
10:13/mi
3:17:56
↑ 106↓ 241.6%
35K· 21.75 mi
10:01/mi
3:25:26
↑ 17↓ 861.7%
23M
10:06/mi
3:38:05
↑ 23↓ 630.6%
24M
10:04/mi
3:48:09
↓ 821.3%
40K· 24.85 mi
10:07/mi
3:56:48
↓ 200.3%
25.2M
10:23/mi
4:00:23
↑ 13↓ 160.2%
Finish· 26.22 mi
9:27/mi
4:10:01
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:01:28
Pace9:16 /mi
2nd Half
Distance13.11 mi
Time2:08:33
Pace9:48 /mi
📊Positive Split: 5.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:59:5328:429:1428:42
9:14
-
10K
6.21 mi11:29:0957:589:2029:16
9:25
+0:11
15K
9.32 mi11:57:451:26:349:1728:36
9:12
-0:13
20K
12.43 mi12:26:181:55:079:1628:33
9:11
-0:01
Half
13.11 mi12:32:392:01:289:166:21
9:18
+0:07
25K
15.53 mi12:55:162:24:059:1722:37
9:20
+0:02
30K
18.64 mi13:25:332:54:229:2130:17
9:45
+0:25
20M
20.00 mi13:38:543:07:439:2313:21
9:49
+0:04
21M
21.00 mi13:49:073:17:569:2610:13
10:13
+0:24
35K
21.75 mi13:56:373:25:269:277:30
10:01
-0:12
23M
23.00 mi14:09:163:38:059:2912:39
10:06
+0:05
24M
24.00 mi14:19:203:48:099:3010:04
10:04
-0:02
40K
24.85 mi14:27:593:56:489:328:39
10:07
+0:03
25.2M
25.20 mi14:31:344:00:239:323:35
10:23
+0:16
Finish
26.22 mi14:41:124:10:019:339:38
9:27
-0:56

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

9:11 /mi

Average Pace

9:33 /mi

Slowest Pace

10:23 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:47:34

91% of race

Time at Steady Pace

22:27

9% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 9:32 /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 mi10:59:5328:429:1428:42
9:14
#21329
10K
6.21 mi11:29:0957:589:2029:16
9:25
#21825
15K
9.32 mi11:57:451:26:349:1728:36
9:12
#21656
20K
12.43 mi12:26:181:55:079:1628:33
9:11
#21398
Half
13.11 mi12:32:392:01:289:166:21
9:18
#21397
25K
15.53 mi12:55:162:24:059:1722:37
9:20
#21200
30K
18.64 mi13:25:332:54:229:2130:17
9:45
#21022
20M
20.00 mi13:38:543:07:439:2313:21
9:49
#20906
21M
21.00 mi13:49:073:17:569:2610:13
10:13
#20779
35K
21.75 mi13:56:373:25:269:277:30
10:01
#20789
23M
23.00 mi14:09:163:38:059:2912:39
10:06
#20745
24M
24.00 mi14:19:203:48:099:3010:04
10:04
#20749
40K
24.85 mi14:27:593:56:489:328:39
10:07
#20718
25.2M
25.20 mi14:31:344:00:239:323:35
10:23
#20688
Finish
26.22 mi14:41:124:10:019:339:38
9:27
#20661
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi213298541854121332(Top 80%)8416(Top 74%)8416(Top 172%)
10K6.21 mi3.10 mi21825-4968757-2168757-21622277(Top 84%)8967(Top 78%)8967(Top 184%)
15K9.32 mi3.11 mi21656+1698650+1078650+10721332(Top 80%)8416(Top 74%)8416(Top 172%)
20K12.43 mi3.11 mi21398+2588494+1568494+15620535(Top 77%)7981(Top 70%)7981(Top 163%)
Half13.11 mi0.68 mi21397+18489+58489+521553(Top 81%)8539(Top 75%)8539(Top 175%)
25K15.53 mi2.42 mi21200+1978377+1128377+11220286(Top 76%)7857(Top 69%)7857(Top 161%)
30K18.64 mi3.11 mi21022+1788297+808297+8020292(Top 76%)7935(Top 69%)7935(Top 162%)
20M20.00 mi1.36 mi20906+1168241+568241+5619946(Top 75%)7821(Top 68%)7821(Top 160%)
21M21.00 mi1.00 mi20779+1278175+668175+6618791(Top 71%)7223(Top 63%)7223(Top 148%)
35K21.75 mi0.75 mi20789-108203-288203-2821342(Top 80%)8672(Top 76%)8672(Top 178%)
23M23.00 mi1.25 mi20745+448193+108193+1020302(Top 76%)8132(Top 71%)8132(Top 167%)
24M24.00 mi1.00 mi20749-48206-138206-1320977(Top 79%)8528(Top 75%)8528(Top 175%)
40K24.85 mi0.85 mi20718+318196+108196+1020297(Top 76%)8218(Top 72%)8218(Top 168%)
25.2M25.20 mi0.35 mi20688+308189+78189+718813(Top 71%)7417(Top 65%)7417(Top 152%)
Finish26.22 mi1.02 mi20661+278178+118178+1119973(Top 75%)7986(Top 70%)7986(Top 164%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 80%
×21story building
+97ft-345ft

Overall

21332

Females

8416

F18-39

8416

5K→10K

3.1 - 6.2 mi

Top 84%
×5story building
+79ft-138ft

Overall

22277

Females

8967

F18-39

8967

10K→15K

6.2 - 9.3 mi

Top 80%
×3story building
+67ft-78ft

Overall

21332

Females

8416

F18-39

8416

15K→20K

9.3 - 12.4 mi

Top 77%
×5story building
+106ft-86ft

Overall

20535

Females

7981

F18-39

7981

20K→Half

12.4 - 13.1 mi

Top 81%
×2story building
+19ft-37ft

Overall

21553

Females

8539

F18-39

8539

Half→25K

13.1 - 15.5 mi

Top 76%
×4story building
+66ft-88ft

Overall

20286

Females

7857

F18-39

7857

25K→30K

15.5 - 18.6 mi

Top 76%
×9story building
+181ft-148ft

Overall

20292

Females

7935

F18-39

7935

30K→20M

18.6 - 20.0 mi

Top 75%
×5story building
+64ft-50ft

Overall

19946

Females

7821

F18-39

7821

20M→21M

20.0 - 21.0 mi

Top 71%
×8story building
+106ft-24ft

Overall

18791

Females

7223

F18-39

7223

21M→35K

21.0 - 21.8 mi

Top 80%
×7story building
+17ft-86ft

Overall

21342

Females

8672

F18-39

8672

35K→23M

21.8 - 23.0 mi

Top 76%
×5story building
+23ft-63ft

Overall

20302

Females

8132

F18-39

8132

23M→24M

23.0 - 24.0 mi

Top 79%
×6story building
+12ft-82ft

Overall

20977

Females

8528

F18-39

8528

24M→40K

24.0 - 24.9 mi

Top 76%
×1story
+6ft-20ft

Overall

20297

Females

8218

F18-39

8218

40K→25.2M

24.9 - 25.2 mi

Top 71%
×1story
+13ft-16ft

Overall

18813

Females

7417

F18-39

7417

25.2M→Finish

25.2 - 26.2 mi

Top 75%
×2story building
+22ft-21ft

Overall

19973

Females

7986

F18-39

7986

Passing Analysis

Category:
Athletes Passed
1718
Passed By
1050
Net Change
+668
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#21329
5K → 10K94590-496#21329#21825
10K → 15K25788+169#21825#21656
15K → 20K29739+258#21656#21398
20K → Half2625+1#21398#21397
Half → 25K21922+197#21397#21200
25K → 30K24062+178#21200#21022
30K → 20M13317+116#21022#20906
20M → 21M14013+127#20906#20779
21M → 35K3949-10#20779#20789
35K → 23M9147+44#20789#20745
23M → 24M3943-4#20745#20749
24M → 40K5423+31#20749#20718
40K → 25.2M355+30#20718#20688
25.2M → Finish5427+27#20688#20661
TOTALS17181050+668
📊

Passing Visuals

Category:
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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