Boston Marathon logo
BOSTON MARATHON 2023

Clare Horan

Bib: 27112•F

ON

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Division (F40-44)
#0 / 1878
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
30:22
Rank: #22847
Start → 5K
30:22 | 9:46/mi
10K· 6.21 mi
1:02:25
Rank: #23724 (-877)
5K → 10K
32:03 | 10:19/mi
15K· 9.32 mi
1:32:20
Rank: #23390 (+334)
10K → 15K
29:55 | 9:38/mi
20K· 12.43 mi
2:03:23
Rank: #23277 (+113)
15K → 20K
31:03 | 10:00/mi
Half· 13.11 mi
2:10:23
Rank: #23305 (-28)
20K → Half
7:00 | 10:16/mi
25K· 15.53 mi
2:35:43
Rank: #23259 (+46)
Half → 25K
25:20 | 10:27/mi
30K· 18.64 mi
3:10:48
Rank: #23319 (-60)
25K → 30K
35:05 | 11:18/mi
20M
3:25:50
Rank: #23268 (+51)
30K → 20M
15:02 | 11:04/mi
21M
3:38:08
Rank: #23271 (-3)
20M → 21M
12:18 | 12:18/mi
35K· 21.75 mi
3:46:28
Rank: #23274 (-3)
21M → 35K
8:20 | 11:08/mi
23M
4:00:26
Rank: #23242 (+32)
35K → 23M
13:58 | 11:09/mi
24M
4:11:15
Rank: #23230 (+12)
23M → 24M
10:49 | 10:49/mi
40K· 24.85 mi
4:21:05
Rank: #23224 (+6)
24M → 40K
9:50 | 11:30/mi
25.2M
4:25:34
Rank: #23240 (-16)
40K → 25.2M
4:29 | 13:00/mi
Finish· 26.22 mi
4:36:22
Rank: #23237 (+3)
25.2M → Finish
10:48 | 10:36/mi

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
Time2:10:23
Pace9:57 /mi
2nd Half
Distance13.11 mi
Time2:25:59
Pace11:08 /mi
📊Positive Split: 12.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:47:5230:229:4630:22
9:46
-
10K
6.21 mi12:19:551:02:2510:0332:03
10:19
+0:33
15K
9.32 mi12:49:501:32:209:5429:55
9:38
-0:41
20K
12.43 mi13:20:532:03:239:5631:03
10:00
+0:22
Half
13.11 mi13:27:532:10:239:577:00
10:16
+0:16
25K
15.53 mi13:53:132:35:4310:0125:20
10:27
+0:11
30K
18.64 mi14:28:183:10:4810:1435:05
11:18
+0:51
20M
20.00 mi14:43:203:25:5010:1715:02
11:04
-0:14
21M
21.00 mi14:55:383:38:0810:2312:18
12:18
+1:14
35K
21.75 mi15:03:583:46:2810:258:20
11:08
-1:10
23M
23.00 mi15:17:564:00:2610:2713:58
11:09
+0:01
24M
24.00 mi15:28:454:11:1510:2810:49
10:49
-0:20
40K
24.85 mi15:38:354:21:0510:309:50
11:30
+0:41
25.2M
25.20 mi15:43:044:25:3410:324:29
13:00
+1:30
Finish
26.22 mi15:53:524:36:2210:3310:48
10:36
-2:24

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

9:38 /mi

Average Pace

10:33 /mi

Slowest Pace

13:00 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:10:23

47% of race

Time at Steady Pace

1:24:17

30% of race

Time at Slower Pace

1:01:42

22% of race

Average Pace: 10:32 /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 mi11:47:5230:229:4630:22
9:46
#22847
10K
6.21 mi12:19:551:02:2510:0332:03
10:19
#23724
15K
9.32 mi12:49:501:32:209:5429:55
9:38
#23390
20K
12.43 mi13:20:532:03:239:5631:03
10:00
#23277
Half
13.11 mi13:27:532:10:239:577:00
10:16
#23305
25K
15.53 mi13:53:132:35:4310:0125:20
10:27
#23259
30K
18.64 mi14:28:183:10:4810:1435:05
11:18
#23319
20M
20.00 mi14:43:203:25:5010:1715:02
11:04
#23268
21M
21.00 mi14:55:383:38:0810:2312:18
12:18
#23271
35K
21.75 mi15:03:583:46:2810:258:20
11:08
#23274
23M
23.00 mi15:17:564:00:2610:2713:58
11:09
#23242
24M
24.00 mi15:28:454:11:1510:2810:49
10:49
#23230
40K
24.85 mi15:38:354:21:0510:309:50
11:30
#23224
25.2M
25.20 mi15:43:044:25:3410:324:29
13:00
#23240
Finish
26.22 mi15:53:524:36:2210:3310:48
10:36
#23237
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi228479303930322608(Top 85%)9136(Top 80%)9136(Top 486%)
10K6.21 mi3.10 mi23724-8779742-4399742-43924332(Top 91%)10079(Top 88%)10079(Top 537%)
15K9.32 mi3.11 mi23390+3349552+1909552+19022608(Top 85%)9136(Top 80%)9136(Top 486%)
20K12.43 mi3.11 mi23277+1139500+529500+5222902(Top 86%)9306(Top 81%)9306(Top 496%)
Half13.11 mi0.68 mi23305-289510-109510-1023779(Top 89%)9786(Top 86%)9786(Top 521%)
25K15.53 mi2.42 mi23259+469487+239487+2323096(Top 87%)9442(Top 83%)9442(Top 503%)
30K18.64 mi3.11 mi23319-609550-639550-6323570(Top 89%)9769(Top 86%)9769(Top 520%)
20M20.00 mi1.36 mi23268+519537+139537+1322815(Top 86%)9417(Top 82%)9417(Top 501%)
21M21.00 mi1.00 mi23271-39542-59542-523199(Top 87%)9652(Top 84%)9652(Top 514%)
35K21.75 mi0.75 mi23274-39551-99551-923552(Top 88%)9904(Top 87%)9904(Top 527%)
23M23.00 mi1.25 mi23242+329546+59546+522656(Top 85%)9407(Top 82%)9407(Top 501%)
24M24.00 mi1.00 mi23230+129547-19547-122702(Top 85%)9475(Top 83%)9475(Top 505%)
40K24.85 mi0.85 mi23224+69553-69553-623211(Top 87%)9774(Top 86%)9774(Top 520%)
25.2M25.20 mi0.35 mi23240-169564-119564-1123978(Top 90%)10168(Top 89%)10168(Top 541%)
Finish26.22 mi1.02 mi23237+39576-129576-1223218(Top 87%)9761(Top 85%)9761(Top 520%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 85%
×21stories
+97ft-345ft

Overall

22608

Females

9136

F40-44

9136

5K→10K

3.1 - 6.2 mi

Top 91%
×5stories
+79ft-138ft

Overall

24332

Females

10079

F40-44

10079

10K→15K

6.2 - 9.3 mi

Top 85%
×3stories
+67ft-78ft

Overall

22608

Females

9136

F40-44

9136

15K→20K

9.3 - 12.4 mi

Top 86%
×5stories
+106ft-86ft

Overall

22902

Females

9306

F40-44

9306

20K→Half

12.4 - 13.1 mi

Top 89%
×2stories
+19ft-37ft

Overall

23779

Females

9786

F40-44

9786

Half→25K

13.1 - 15.5 mi

Top 87%
×4stories
+66ft-88ft

Overall

23096

Females

9442

F40-44

9442

25K→30K

15.5 - 18.6 mi

Top 89%
×9stories
+181ft-148ft

Overall

23570

Females

9769

F40-44

9769

30K→20M

18.6 - 20.0 mi

Top 86%
×5stories
+64ft-50ft

Overall

22815

Females

9417

F40-44

9417

20M→21M

20.0 - 21.0 mi

Top 87%
×8stories
+106ft-24ft

Overall

23199

Females

9652

F40-44

9652

21M→35K

21.0 - 21.8 mi

Top 88%
×7stories
+17ft-86ft

Overall

23552

Females

9904

F40-44

9904

35K→23M

21.8 - 23.0 mi

Top 85%
×5stories
+23ft-63ft

Overall

22656

Females

9407

F40-44

9407

23M→24M

23.0 - 24.0 mi

Top 85%
×6stories
+12ft-82ft

Overall

22702

Females

9475

F40-44

9475

24M→40K

24.0 - 24.9 mi

Top 87%
×1story
+6ft-20ft

Overall

23211

Females

9774

F40-44

9774

40K→25.2M

24.9 - 25.2 mi

Top 90%
×1story
+13ft-16ft

Overall

23978

Females

10168

F40-44

10168

25.2M→Finish

25.2 - 26.2 mi

Top 87%
×2stories
+22ft-21ft

Overall

23218

Females

9761

F40-44

9761

Passing Analysis

Category:
Athletes Passed
1109
Passed By
1499
Net Change
-390
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#22847
5K → 10K23900-877#22847#23724
10K → 15K35218+334#23724#23390
15K → 20K17663+113#23390#23277
20K → Half1240-28#23277#23305
Half → 25K11670+46#23305#23259
25K → 30K99159-60#23259#23319
30K → 20M8332+51#23319#23268
20M → 21M3740-3#23268#23271
21M → 35K3235-3#23271#23274
35K → 23M5422+32#23274#23242
23M → 24M3624+12#23242#23230
24M → 40K4539+6#23230#23224
40K → 25.2M1632-16#23224#23240
25.2M → Finish2825+3#23240#23237
TOTALS11091499-390
📊

Passing Visuals

Category:
Loading...

🔥Passing Intensity

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