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BOSTON MARATHON 2023

Katherine Guilbo

Bib: 11540•F

NY

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 24%
Gender (Female)
#0 / 11423
Top 6%
Division (F18-39)
#0 / 4884
Top 12%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
22:03
Rank: #6877
Start → 5K
22:03 | 7:06/mi
10K· 6.21 mi
44:13
Rank: #7225 (-348)
5K → 10K
22:10 | 7:08/mi
15K· 9.32 mi
1:06:20
Rank: #7223 (+2)
10K → 15K
22:07 | 7:07/mi
20K· 12.43 mi
1:28:26
Rank: #7031 (+192)
15K → 20K
22:06 | 7:07/mi
Half· 13.11 mi
1:33:15
Rank: #7015 (+16)
20K → Half
4:49 | 7:04/mi
25K· 15.53 mi
1:50:38
Rank: #6912 (+103)
Half → 25K
17:23 | 7:10/mi
30K· 18.64 mi
2:13:21
Rank: #6711 (+201)
25K → 30K
22:43 | 7:19/mi
20M
2:23:31
Rank: #6685 (+26)
30K → 20M
10:10 | 7:29/mi
21M
2:31:31
Rank: #6676 (+9)
20M → 21M
8:00 | 8:00/mi
35K· 21.75 mi
2:36:55
Rank: #6648 (+28)
21M → 35K
5:24 | 7:13/mi
23M
2:46:28
Rank: #6630 (+18)
35K → 23M
9:33 | 7:38/mi
24M
2:53:45
Rank: #6582 (+48)
23M → 24M
7:17 | 7:17/mi
40K· 24.85 mi
3:00:04
Rank: #6500 (+82)
24M → 40K
6:19 | 7:23/mi
25.2M
3:02:52
Rank: #6483 (+17)
40K → 25.2M
2:48 | 8:07/mi
Finish· 26.22 mi
3:10:08
Rank: #6450 (+33)
25.2M → Finish
7:16 | 7:08/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:33:15
Pace7:07 /mi
2nd Half
Distance13.11 mi
Time1:36:53
Pace7:23 /mi
📊Positive Split: 3.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:48:5722:037:0622:03
7:06
-
10K
6.21 mi11:11:0744:137:0722:10
7:08
+0:02
15K
9.32 mi11:33:141:06:207:0722:07
7:07
-0:01
20K
12.43 mi11:55:201:28:267:0722:06
7:07
0:00
Half
13.11 mi12:00:091:33:157:074:49
7:04
-0:03
25K
15.53 mi12:17:321:50:387:0717:23
7:10
+0:06
30K
18.64 mi12:40:152:13:217:0922:43
7:19
+0:09
20M
20.00 mi12:50:252:23:317:1110:10
7:29
+0:10
21M
21.00 mi12:58:252:31:317:138:00
8:00
+0:31
35K
21.75 mi13:03:492:36:557:135:24
7:13
-0:47
23M
23.00 mi13:13:222:46:287:149:33
7:38
+0:25
24M
24.00 mi13:20:392:53:457:147:17
7:17
-0:21
40K
24.85 mi13:26:583:00:047:156:19
7:23
+0:06
25.2M
25.20 mi13:29:463:02:527:152:48
8:07
+0:44
Finish
26.22 mi13:37:023:10:087:157:16
7:08
-0:59

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

7:04 /mi

Average Pace

7:15 /mi

Slowest Pace

8:07 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:59:20

94% of race

Time at Steady Pace

10:48

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:15 /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 mi10:48:5722:037:0622:03
7:06
#6877
10K
6.21 mi11:11:0744:137:0722:10
7:08
#7225
15K
9.32 mi11:33:141:06:207:0722:07
7:07
#7223
20K
12.43 mi11:55:201:28:267:0722:06
7:07
#7031
Half
13.11 mi12:00:091:33:157:074:49
7:04
#7015
25K
15.53 mi12:17:321:50:387:0717:23
7:10
#6912
30K
18.64 mi12:40:152:13:217:0922:43
7:19
#6711
20M
20.00 mi12:50:252:23:317:1110:10
7:29
#6685
21M
21.00 mi12:58:252:31:317:138:00
8:00
#6676
35K
21.75 mi13:03:492:36:557:135:24
7:13
#6648
23M
23.00 mi13:13:222:46:287:149:33
7:38
#6630
24M
24.00 mi13:20:392:53:457:147:17
7:17
#6582
40K
24.85 mi13:26:583:00:047:156:19
7:23
#6500
25.2M
25.20 mi13:29:463:02:527:152:48
8:07
#6483
Finish
26.22 mi13:37:023:10:087:157:16
7:08
#6450
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi68776866867270(Top 27%)821(Top 7%)821(Top 17%)
10K6.21 mi3.10 mi7225-348791-105791-1057662(Top 29%)940(Top 8%)940(Top 19%)
15K9.32 mi3.11 mi7223+2801-10801-107270(Top 27%)821(Top 7%)821(Top 17%)
20K12.43 mi3.11 mi7031+192749+52749+526627(Top 25%)687(Top 6%)687(Top 14%)
Half13.11 mi0.68 mi7015+16746+3746+36964(Top 26%)748(Top 7%)748(Top 15%)
25K15.53 mi2.42 mi6912+103728+18728+186514(Top 24%)699(Top 6%)699(Top 14%)
30K18.64 mi3.11 mi6711+201704+24704+246103(Top 23%)657(Top 6%)657(Top 13%)
20M20.00 mi1.36 mi6685+26713-9713-96690(Top 25%)916(Top 8%)916(Top 19%)
21M21.00 mi1.00 mi6676+9727-14727-147363(Top 28%)1259(Top 11%)1259(Top 26%)
35K21.75 mi0.75 mi6648+28728-1728-16665(Top 25%)967(Top 8%)967(Top 20%)
23M23.00 mi1.25 mi6630+18730-2730-27280(Top 27%)1277(Top 11%)1277(Top 26%)
24M24.00 mi1.00 mi6582+48735-5735-56290(Top 24%)1009(Top 9%)1009(Top 21%)
40K24.85 mi0.85 mi6500+82724+11724+116027(Top 23%)985(Top 9%)985(Top 20%)
25.2M25.20 mi0.35 mi6483+17729-5729-57250(Top 27%)1494(Top 13%)1494(Top 31%)
Finish26.22 mi1.02 mi6450+33730-1730-16017(Top 23%)1064(Top 9%)1064(Top 22%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 27%
×21stories
+97ft-345ft

Overall

7270

Females

821

F18-39

821

5K→10K

3.1 - 6.2 mi

Top 29%
×5stories
+79ft-138ft

Overall

7662

Females

940

F18-39

940

10K→15K

6.2 - 9.3 mi

Top 27%
×3stories
+67ft-78ft

Overall

7270

Females

821

F18-39

821

15K→20K

9.3 - 12.4 mi

Top 25%
×5stories
+106ft-86ft

Overall

6627

Females

687

F18-39

687

20K→Half

12.4 - 13.1 mi

Top 26%
×2stories
+19ft-37ft

Overall

6964

Females

748

F18-39

748

Half→25K

13.1 - 15.5 mi

Top 24%
×4stories
+66ft-88ft

Overall

6514

Females

699

F18-39

699

25K→30K

15.5 - 18.6 mi

Top 23%
×9stories
+181ft-148ft

Overall

6103

Females

657

F18-39

657

30K→20M

18.6 - 20.0 mi

Top 25%
×5stories
+64ft-50ft

Overall

6690

Females

916

F18-39

916

20M→21M

20.0 - 21.0 mi

Top 28%
×8stories
+106ft-24ft

Overall

7363

Females

1259

F18-39

1259

21M→35K

21.0 - 21.8 mi

Top 25%
×7stories
+17ft-86ft

Overall

6665

Females

967

F18-39

967

35K→23M

21.8 - 23.0 mi

Top 27%
×5stories
+23ft-63ft

Overall

7280

Females

1277

F18-39

1277

23M→24M

23.0 - 24.0 mi

Top 24%
×6stories
+12ft-82ft

Overall

6290

Females

1009

F18-39

1009

24M→40K

24.0 - 24.9 mi

Top 23%
×1story
+6ft-20ft

Overall

6027

Females

985

F18-39

985

40K→25.2M

24.9 - 25.2 mi

Top 27%
×1story
+13ft-16ft

Overall

7250

Females

1494

F18-39

1494

25.2M→Finish

25.2 - 26.2 mi

Top 23%
×2stories
+22ft-21ft

Overall

6017

Females

1064

F18-39

1064

Passing Analysis

Category:
Athletes Passed
1349
Passed By
922
Net Change
+427
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#6877
5K → 10K88436-348#6877#7225
10K → 15K134132+2#7225#7223
15K → 20K21624+192#7223#7031
20K → Half2812+16#7031#7015
Half → 25K13330+103#7015#6912
25K → 30K23231+201#6912#6711
30K → 20M7145+26#6711#6685
20M → 21M6960+9#6685#6676
21M → 35K4820+28#6676#6648
35K → 23M7052+18#6648#6630
23M → 24M7224+48#6630#6582
24M → 40K919+82#6582#6500
40K → 25.2M3518+17#6500#6483
25.2M → Finish6229+33#6483#6450
TOTALS1349922+427
📊

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