Boston Marathon logo
BOSTON MARATHON 2023

Joanna Cloherty

Bib: 26283•F

MA

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

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
10:26/mi
32:24
↑ 97↓ 3451.5%
10K· 6.21 mi
9:54/mi
1:03:11
↑ 79↓ 1380.4%
15K· 9.32 mi
11:50/mi
1:39:57
↑ 67↓ 78
20K· 12.43 mi
10:12/mi
2:11:38
↑ 106↓ 860.1%
Half· 13.11 mi
9:48/mi
2:18:19
↑ 19↓ 370.5%
25K· 15.53 mi
10:30/mi
2:43:47
↑ 66↓ 880.2%
30K· 18.64 mi
13:06/mi
3:24:28
↑ 181↓ 1480.2%
20M
10:48/mi
3:39:09
↑ 64↓ 500.2%
21M
11:03/mi
3:50:12
↑ 106↓ 241.6%
35K· 21.75 mi
11:04/mi
3:58:29
↑ 17↓ 861.7%
23M
10:31/mi
4:11:39
↑ 23↓ 630.6%
24M
11:02/mi
4:22:41
↓ 821.3%
40K· 24.85 mi
10:35/mi
4:31:44
↓ 200.3%
25.2M
10:47/mi
4:35:27
↑ 13↓ 160.2%
Finish· 26.22 mi
8:19/mi
4:43:55
↑ 22↓ 21

The Course

Is this your race?

Claim it — unlock a deeper AI report on this race, free

A personalized Race Performance Report that goes beyond this page — emailed to you, built from your real splits.

Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:18:19
Pace10:33 /mi
2nd Half
Distance13.11 mi
Time2:25:36
Pace11:06 /mi
📊Positive Split: 5.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:49:0832:2410:2632:24
10:26
-
10K
6.21 mi12:19:551:03:1110:1030:47
9:54
-0:32
15K
9.32 mi12:56:411:39:5710:4336:46
11:50
+1:56
20K
12.43 mi13:28:222:11:3810:3631:41
10:12
-1:38
Half
13.11 mi13:35:032:18:1910:336:41
9:48
-0:24
25K
15.53 mi14:00:312:43:4710:3325:28
10:30
+0:42
30K
18.64 mi14:41:123:24:2810:5840:41
13:06
+2:36
20M
20.00 mi14:55:533:39:0910:5714:41
10:48
-2:18
21M
21.00 mi15:06:563:50:1210:5811:03
11:03
+0:15
35K
21.75 mi15:15:133:58:2910:588:17
11:04
+0:01
23M
23.00 mi15:28:234:11:3910:5613:10
10:31
-0:33
24M
24.00 mi15:39:254:22:4110:5711:02
11:02
+0:31
40K
24.85 mi15:48:284:31:4410:569:03
10:35
-0:27
25.2M
25.20 mi15:52:114:35:2710:563:43
10:47
+0:12
Finish
26.22 mi16:00:394:43:5510:508:28
8:19
-2:28

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

8:19 /mi

Average Pace

10:50 /mi

Slowest Pace

13:06 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

45:56

16% of race

Time at Steady Pace

2:40:32

57% of race

Time at Slower Pace

1:17:27

27% of race

Average Pace: 10:50 /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 mi11:49:0832:2410:2632:24
10:26
#24535
10K
6.21 mi12:19:551:03:1110:1030:47
9:54
#23996
15K
9.32 mi12:56:411:39:5710:4336:46
11:50
#25027
20K
12.43 mi13:28:222:11:3810:3631:41
10:12
#24574
Half
13.11 mi13:35:032:18:1910:336:41
9:48
#24491
25K
15.53 mi14:00:312:43:4710:3325:28
10:30
#24263
30K
18.64 mi14:41:123:24:2810:5840:41
13:06
#24618
20M
20.00 mi14:55:533:39:0910:5714:41
10:48
#24463
21M
21.00 mi15:06:563:50:1210:5811:03
11:03
#24287
35K
21.75 mi15:15:133:58:2910:588:17
11:04
#24253
23M
23.00 mi15:28:234:11:3910:5613:10
10:31
#24138
24M
24.00 mi15:39:254:22:4110:5711:02
11:02
#24091
40K
24.85 mi15:48:284:31:4410:569:03
10:35
#24019
25.2M
25.20 mi15:52:114:35:2710:563:43
10:47
#23969
Finish
26.22 mi16:00:394:43:5510:508:28
8:19
#23810
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi24535101791017925952(Top 97%)11009(Top 96%)11009(Top 225%)
10K6.21 mi3.10 mi23996+5399891+2889891+28823512(Top 88%)9632(Top 84%)9632(Top 197%)
15K9.32 mi3.11 mi25027-103110452-56110452-56125952(Top 97%)11009(Top 96%)11009(Top 225%)
20K12.43 mi3.11 mi24574+45310217+23510217+23523290(Top 87%)9508(Top 83%)9508(Top 195%)
Half13.11 mi0.68 mi24491+8310176+4110176+4122891(Top 86%)9301(Top 81%)9301(Top 190%)
25K15.53 mi2.42 mi24263+22810054+12210054+12223216(Top 87%)9504(Top 83%)9504(Top 195%)
30K18.64 mi3.11 mi24618-35510270-21610270-21625492(Top 96%)10837(Top 95%)10837(Top 222%)
20M20.00 mi1.36 mi24463+15510191+7910191+7922368(Top 84%)9179(Top 80%)9179(Top 188%)
21M21.00 mi1.00 mi24287+17610108+8310108+8320947(Top 79%)8434(Top 74%)8434(Top 173%)
35K21.75 mi0.75 mi24253+3410099+910099+923440(Top 88%)9838(Top 86%)9838(Top 201%)
23M23.00 mi1.25 mi24138+11510041+5810041+5821371(Top 80%)8726(Top 76%)8726(Top 179%)
24M24.00 mi1.00 mi24091+4710020+2110020+2123121(Top 87%)9696(Top 85%)9696(Top 199%)
40K24.85 mi0.85 mi24019+729982+389982+3821443(Top 81%)8872(Top 78%)8872(Top 182%)
25.2M25.20 mi0.35 mi23969+509957+259957+2519980(Top 75%)8069(Top 71%)8069(Top 165%)
Finish26.22 mi1.02 mi23810+1599873+849873+8414203(Top 53%)4864(Top 43%)4864(Top 100%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 97%
×21story building
+97ft-345ft

Overall

25952

Females

11009

F18-39

11009

5K→10K

3.1 - 6.2 mi

Top 88%
×5story building
+79ft-138ft

Overall

23512

Females

9632

F18-39

9632

10K→15K

6.2 - 9.3 mi

Top 97%
×3story building
+67ft-78ft

Overall

25952

Females

11009

F18-39

11009

15K→20K

9.3 - 12.4 mi

Top 87%
×5story building
+106ft-86ft

Overall

23290

Females

9508

F18-39

9508

20K→Half

12.4 - 13.1 mi

Top 86%
×2story building
+19ft-37ft

Overall

22891

Females

9301

F18-39

9301

Half→25K

13.1 - 15.5 mi

Top 87%
×4story building
+66ft-88ft

Overall

23216

Females

9504

F18-39

9504

25K→30K

15.5 - 18.6 mi

Top 96%
×9story building
+181ft-148ft

Overall

25492

Females

10837

F18-39

10837

30K→20M

18.6 - 20.0 mi

Top 84%
×5story building
+64ft-50ft

Overall

22368

Females

9179

F18-39

9179

20M→21M

20.0 - 21.0 mi

Top 79%
×8story building
+106ft-24ft

Overall

20947

Females

8434

F18-39

8434

21M→35K

21.0 - 21.8 mi

Top 88%
×7story building
+17ft-86ft

Overall

23440

Females

9838

F18-39

9838

35K→23M

21.8 - 23.0 mi

Top 80%
×5story building
+23ft-63ft

Overall

21371

Females

8726

F18-39

8726

23M→24M

23.0 - 24.0 mi

Top 87%
×6story building
+12ft-82ft

Overall

23121

Females

9696

F18-39

9696

24M→40K

24.0 - 24.9 mi

Top 81%
×1story
+6ft-20ft

Overall

21443

Females

8872

F18-39

8872

40K→25.2M

24.9 - 25.2 mi

Top 75%
×1story
+13ft-16ft

Overall

19980

Females

8069

F18-39

8069

25.2M→Finish

25.2 - 26.2 mi

Top 53%
×2story building
+22ft-21ft

Overall

14203

Females

4864

F18-39

4864

Passing Analysis

Category:
Athletes Passed
2227
Passed By
1502
Net Change
+725
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#24535
5K → 10K57334+539#24535#23996
10K → 15K61037-1031#23996#25027
15K → 20K4541+453#25027#24574
20K → Half852+83#24574#24491
Half → 25K23810+228#24491#24263
25K → 30K31386-355#24263#24618
30K → 20M1583+155#24618#24463
20M → 21M1804+176#24463#24287
21M → 35K439+34#24287#24253
35K → 23M1172+115#24253#24138
23M → 24M5811+47#24138#24091
24M → 40K753+72#24091#24019
40K → 25.2M500+50#24019#23969
25.2M → Finish1590+159#23969#23810
TOTALS22271502+725
📊

Passing Visuals

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
Share Feedback

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing