Boston Marathon logo
BOSTON MARATHON 2023

Katherine Carey

NY

Bib: 24827 F

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 26622
Gender (Female)
#0 / 11423
Division (F18-39)
#0 / 4884
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
469 ft elev
5K· 3.11 mi
9:11/mi
28:31
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
8:47/mi
55:47
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
9:41/mi
1:25:53
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
9:24/mi
1:55:04
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
9:26/mi
2:01:30
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
10:03/mi
2:25:52
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
10:41/mi
2:59:05
↑ 181↓ 1480.2%
138 ft elev
20M
11:18/mi
3:14:27
↑ 64↓ 500.2%
148 ft elev
21M
11:56/mi
3:26:23
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
10:58/mi
3:34:35
↑ 17↓ 861.7%
156 ft elev
23M
11:24/mi
3:48:51
↑ 23↓ 630.6%
116 ft elev
24M
11:21/mi
4:00:12
↓ 821.3%
34 ft elev
40K· 24.85 mi
11:38/mi
4:10:09
↓ 200.3%
20 ft elev
25.2M
11:38/mi
4:14:10
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
11:12/mi
4:25:35
↑ 22↓ 21
17 ft elev
Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent

The Course

Is this your race?

Claim it for a free AI report

A coach's-eye read of your race — emailed to you, free.

Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:01:30
Pace9:16 /mi
2nd Half
Distance13.11 mi
Time2:24:05
Pace10:59 /mi
📊Positive Split: 18.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:51:1228:319:1128:31
9:11
-
10K
6.21 mi12:18:2855:478:5927:16
8:47
-0:24
15K
9.32 mi12:48:341:25:539:1330:06
9:41
+0:54
20K
12.43 mi13:17:451:55:049:1629:11
9:24
-0:17
Half
13.11 mi13:24:112:01:309:166:26
9:26
+0:02
25K
15.53 mi13:48:332:25:529:2324:22
10:03
+0:37
30K
18.64 mi14:21:462:59:059:3633:13
10:41
+0:38
20M
20.00 mi14:37:083:14:279:4315:22
11:18
+0:37
21M
21.00 mi14:49:043:26:239:5011:56
11:56
+0:38
35K
21.75 mi14:57:163:34:359:528:12
10:58
-0:58
23M
23.00 mi15:11:323:48:519:5714:16
11:24
+0:26
24M
24.00 mi15:22:534:00:1210:0111:21
11:21
-0:03
40K
24.85 mi15:32:504:10:0910:049:57
11:38
+0:17
25.2M
25.20 mi15:36:514:14:1010:054:01
11:38
0:00
Finish
26.22 mi15:48:164:25:3510:0811:25
11:12
-0:26

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

8:47 /mi

Average Pace

10:08 /mi

Slowest Pace

11:56 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:25:52

55% of race

Time at Steady Pace

1:33:49

35% of race

Time at Slower Pace

25:54

10% of race

Average Pace: 10:08 /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 mi11:51:1228:319:1128:31
9:11
#21158
10K
6.21 mi12:18:2855:478:5927:16
8:47
#20556
15K
9.32 mi12:48:341:25:539:1330:06
9:41
#21416
20K
12.43 mi13:17:451:55:049:1629:11
9:24
#21387
Half
13.11 mi13:24:112:01:309:166:26
9:26
#21404
25K
15.53 mi13:48:332:25:529:2324:22
10:03
#21570
30K
18.64 mi14:21:462:59:059:3633:13
10:41
#21769
20M
20.00 mi14:37:083:14:279:4315:22
11:18
#21944
21M
21.00 mi14:49:043:26:239:5011:56
11:56
#22009
35K
21.75 mi14:57:163:34:359:528:12
10:58
#22063
23M
23.00 mi15:11:323:48:519:5714:16
11:24
#22119
24M
24.00 mi15:22:534:00:1210:0111:21
11:21
#22202
40K
24.85 mi15:32:504:10:0910:049:57
11:38
#22272
25.2M
25.20 mi15:36:514:14:1010:054:01
11:38
#22261
Finish
26.22 mi15:48:164:25:3510:0811:25
11:12
#22354
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi21158845584552277492209220
10K6.21 mi3.10 mi20556+6028070+3858070+3851982375967596
15K9.32 mi3.11 mi21416-8608506-4368506-4362277492209220
20K12.43 mi3.11 mi21387+298488+188488+182123683658365
Half13.11 mi0.68 mi21404-178492-48492-42194287578757
25K15.53 mi2.42 mi21570-1668583-918583-912233190179017
30K18.64 mi3.11 mi21769-1998701-1188701-1182259192379237
20M20.00 mi1.36 mi21944-1758814-1138814-1132319596229622
21M21.00 mi1.00 mi22009-658859-458859-452265793649364
35K21.75 mi0.75 mi22063-548896-378896-372324497219721
23M23.00 mi1.25 mi22119-568937-418937-412306796229622
24M24.00 mi1.00 mi22202-838990-538990-532367299839983
40K24.85 mi0.85 mi22272-709039-499039-492343799079907
25.2M25.20 mi0.35 mi22261+119038+19038+12181190359035
Finish26.22 mi1.02 mi22354-939098-609098-60243021030210302

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 86%
×21story building
+97ft-345ft

Overall

22774

Females

9220

F18-39

9220

5K→10K

3.1 - 6.2 mi

Top 74%
×5story building
+79ft-138ft

Overall

19823

Females

7596

F18-39

7596

10K→15K

6.2 - 9.3 mi

Top 86%
×3story building
+67ft-78ft

Overall

22774

Females

9220

F18-39

9220

15K→20K

9.3 - 12.4 mi

Top 80%
×5story building
+106ft-86ft

Overall

21236

Females

8365

F18-39

8365

20K→Half

12.4 - 13.1 mi

Top 82%
×2story building
+19ft-37ft

Overall

21942

Females

8757

F18-39

8757

Half→25K

13.1 - 15.5 mi

Top 84%
×4story building
+66ft-88ft

Overall

22331

Females

9017

F18-39

9017

25K→30K

15.5 - 18.6 mi

Top 85%
×9story building
+181ft-148ft

Overall

22591

Females

9237

F18-39

9237

30K→20M

18.6 - 20.0 mi

Top 87%
×5story building
+64ft-50ft

Overall

23195

Females

9622

F18-39

9622

20M→21M

20.0 - 21.0 mi

Top 85%
×8story building
+106ft-24ft

Overall

22657

Females

9364

F18-39

9364

21M→35K

21.0 - 21.8 mi

Top 87%
×7story building
+17ft-86ft

Overall

23244

Females

9721

F18-39

9721

35K→23M

21.8 - 23.0 mi

Top 87%
×5story building
+23ft-63ft

Overall

23067

Females

9622

F18-39

9622

23M→24M

23.0 - 24.0 mi

Top 89%
×6story building
+12ft-82ft

Overall

23672

Females

9983

F18-39

9983

24M→40K

24.0 - 24.9 mi

Top 88%
×1story
+6ft-20ft

Overall

23437

Females

9907

F18-39

9907

40K→25.2M

24.9 - 25.2 mi

Top 82%
×1story
+13ft-16ft

Overall

21811

Females

9035

F18-39

9035

25.2M→Finish

25.2 - 26.2 mi

Top 91%
×2story building
+22ft-21ft

Overall

24302

Females

10302

F18-39

10302

Passing Analysis

Category:
Athletes Passed
1208
Passed By
2404
Net Change
-1196
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#21158
5K → 10K704102+602#21158#20556
10K → 15K15875-860#20556#21416
15K → 20K145116+29#21416#21387
20K → Half2340-17#21387#21404
Half → 25K53219-166#21404#21570
25K → 30K81280-199#21570#21769
30K → 20M30205-175#21769#21944
20M → 21M42107-65#21944#22009
21M → 35K1468-54#22009#22063
35K → 23M3187-56#22063#22119
23M → 24M20103-83#22119#22202
24M → 40K2090-70#22202#22272
40K → 25.2M2312+11#22272#22261
25.2M → Finish7100-93#22261#22354
TOTALS12082404-1196

Passing Charts

Category:
Loading...

Passing Circle

Loading...

Position Flow

Loading...

Race Lanes

Loading...

Upload your GPX file

Supports Garmin, Apple Watch, Polar, Suunto, COROS, Strava, and other apps

.gpx files up to 10MB

Export Track Data

Download your race performance as a GPX or TCX file to import into Strava, Garmin Connect, or other fitness apps.

Questions or issues regarding timing data?

If you notice any discrepancies in your timing data or have questions about your results, our support team can help.

Contact Race Support

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing