Boston Marathon logo
BOSTON MARATHON 2023

Caroline Coplin

Bib: 27249•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

Start
0:00:00
Race begins
5K· 3.11 mi
31:24
Rank: #23707
Start → 5K
31:24 | 10:06/mi
10K· 6.21 mi
1:02:26
Rank: #23731 (-24)
5K → 10K
31:02 | 9:59/mi
15K· 9.32 mi
1:35:25
Rank: #24095 (-364)
10K → 15K
32:59 | 10:37/mi
20K· 12.43 mi
2:09:24
Rank: #24256 (-161)
15K → 20K
33:59 | 10:56/mi
Half· 13.11 mi
2:16:45
Rank: #24285 (-29)
20K → Half
7:21 | 10:46/mi
25K· 15.53 mi
2:44:01
Rank: #24289 (-4)
Half → 25K
27:16 | 11:15/mi
30K· 18.64 mi
3:20:00
Rank: #24222 (+67)
25K → 30K
35:59 | 11:35/mi
20M
3:35:48
Rank: #24183 (+39)
30K → 20M
15:48 | 11:38/mi
21M
3:48:07
Rank: #24140 (+43)
20M → 21M
12:19 | 12:19/mi
35K· 21.75 mi
3:58:20
Rank: #24242 (-102)
21M → 35K
10:13 | 13:39/mi
23M
4:15:34
Rank: #24402 (-160)
35K → 23M
17:14 | 13:46/mi
24M
4:28:47
Rank: #24502 (-100)
23M → 24M
13:13 | 13:13/mi
40K· 24.85 mi
4:39:53
Rank: #24544 (-42)
24M → 40K
11:06 | 12:59/mi
25.2M
4:44:31
Rank: #24556 (-12)
40K → 25.2M
4:38 | 13:26/mi
Finish· 26.22 mi
4:56:02
Rank: #24574 (-18)
25.2M → Finish
11:31 | 11:18/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
Time2:16:45
Pace10:26 /mi
2nd Half
Distance13.11 mi
Time2:39:17
Pace12:09 /mi
📊Positive Split: 16.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:51:1231:2410:0631:24
10:06
-
10K
6.21 mi12:22:141:02:2610:0331:02
9:59
-0:07
15K
9.32 mi12:55:131:35:2510:1432:59
10:37
+0:38
20K
12.43 mi13:29:122:09:2410:2533:59
10:56
+0:19
Half
13.11 mi13:36:332:16:4510:267:21
10:46
-0:10
25K
15.53 mi14:03:492:44:0110:3427:16
11:15
+0:29
30K
18.64 mi14:39:483:20:0010:4435:59
11:35
+0:20
20M
20.00 mi14:55:363:35:4810:4715:48
11:38
+0:03
21M
21.00 mi15:07:553:48:0710:5212:19
12:19
+0:41
35K
21.75 mi15:18:083:58:2010:5810:13
13:39
+1:20
23M
23.00 mi15:35:224:15:3411:0717:14
13:46
+0:07
24M
24.00 mi15:48:354:28:4711:1213:13
13:13
-0:33
40K
24.85 mi15:59:414:39:5311:1611:06
12:59
-0:14
25.2M
25.20 mi16:04:194:44:3111:174:38
13:26
+0:27
Finish
26.22 mi16:15:504:56:0211:1811:31
11:18
-2:08

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

9:59 /mi

Average Pace

11:18 /mi

Slowest Pace

13:46 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:16:45

46% of race

Time at Steady Pace

1:30:34

31% of race

Time at Slower Pace

1:08:43

23% of race

Average Pace: 11:17 /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 mi11:51:1231:2410:0631:24
10:06
#23707
10K
6.21 mi12:22:141:02:2610:0331:02
9:59
#23731
15K
9.32 mi12:55:131:35:2510:1432:59
10:37
#24095
20K
12.43 mi13:29:122:09:2410:2533:59
10:56
#24256
Half
13.11 mi13:36:332:16:4510:267:21
10:46
#24285
25K
15.53 mi14:03:492:44:0110:3427:16
11:15
#24289
30K
18.64 mi14:39:483:20:0010:4435:59
11:35
#24222
20M
20.00 mi14:55:363:35:4810:4715:48
11:38
#24183
21M
21.00 mi15:07:553:48:0710:5212:19
12:19
#24140
35K
21.75 mi15:18:083:58:2010:5810:13
13:39
#24242
23M
23.00 mi15:35:224:15:3411:0717:14
13:46
#24402
24M
24.00 mi15:48:354:28:4711:1213:13
13:13
#24502
40K
24.85 mi15:59:414:39:5311:1611:06
12:59
#24544
25.2M
25.20 mi16:04:194:44:3111:174:38
13:26
#24556
Finish
26.22 mi16:15:504:56:0211:1811:31
11:18
#24574
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi237079754975424669(Top 93%)10274(Top 90%)10274(Top 210%)
10K6.21 mi3.10 mi23731-249747+79747+723662(Top 89%)9709(Top 85%)9709(Top 199%)
15K9.32 mi3.11 mi24095-3649946-1999946-19924669(Top 93%)10274(Top 90%)10274(Top 210%)
20K12.43 mi3.11 mi24256-16110035-8910035-8924539(Top 92%)10223(Top 89%)10223(Top 209%)
Half13.11 mi0.68 mi24285-2910056-2110056-2124647(Top 93%)10291(Top 90%)10291(Top 211%)
25K15.53 mi2.42 mi24289-410070-1410070-1424334(Top 91%)10134(Top 89%)10134(Top 207%)
30K18.64 mi3.11 mi24222+6710058+1210058+1223980(Top 90%)10008(Top 88%)10008(Top 205%)
20M20.00 mi1.36 mi24183+3910045+1310045+1323726(Top 89%)9918(Top 87%)9918(Top 203%)
21M21.00 mi1.00 mi24140+4310027+1810027+1823229(Top 87%)9672(Top 85%)9672(Top 198%)
35K21.75 mi0.75 mi24242-10210090-6310090-6325993(Top 98%)11128(Top 97%)11128(Top 228%)
23M23.00 mi1.25 mi24402-16010180-9010180-9025671(Top 96%)10988(Top 96%)10988(Top 225%)
24M24.00 mi1.00 mi24502-10010245-6510245-6525627(Top 96%)10990(Top 96%)10990(Top 225%)
40K24.85 mi0.85 mi24544-4210278-3310278-3324930(Top 94%)10641(Top 93%)10641(Top 218%)
25.2M25.20 mi0.35 mi24556-1210290-1210290-1224472(Top 92%)10421(Top 91%)10421(Top 213%)
Finish26.22 mi1.02 mi24574-1810304-1410304-1424434(Top 92%)10374(Top 91%)10374(Top 212%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 93%
×21stories
+97ft-345ft

Overall

24669

Females

10274

F18-39

10274

5K→10K

3.1 - 6.2 mi

Top 89%
×5stories
+79ft-138ft

Overall

23662

Females

9709

F18-39

9709

10K→15K

6.2 - 9.3 mi

Top 93%
×3stories
+67ft-78ft

Overall

24669

Females

10274

F18-39

10274

15K→20K

9.3 - 12.4 mi

Top 92%
×5stories
+106ft-86ft

Overall

24539

Females

10223

F18-39

10223

20K→Half

12.4 - 13.1 mi

Top 93%
×2stories
+19ft-37ft

Overall

24647

Females

10291

F18-39

10291

Half→25K

13.1 - 15.5 mi

Top 91%
×4stories
+66ft-88ft

Overall

24334

Females

10134

F18-39

10134

25K→30K

15.5 - 18.6 mi

Top 90%
×9stories
+181ft-148ft

Overall

23980

Females

10008

F18-39

10008

30K→20M

18.6 - 20.0 mi

Top 89%
×5stories
+64ft-50ft

Overall

23726

Females

9918

F18-39

9918

20M→21M

20.0 - 21.0 mi

Top 87%
×8stories
+106ft-24ft

Overall

23229

Females

9672

F18-39

9672

21M→35K

21.0 - 21.8 mi

Top 98%
×7stories
+17ft-86ft

Overall

25993

Females

11128

F18-39

11128

35K→23M

21.8 - 23.0 mi

Top 96%
×5stories
+23ft-63ft

Overall

25671

Females

10988

F18-39

10988

23M→24M

23.0 - 24.0 mi

Top 96%
×6stories
+12ft-82ft

Overall

25627

Females

10990

F18-39

10990

24M→40K

24.0 - 24.9 mi

Top 94%
×1story
+6ft-20ft

Overall

24930

Females

10641

F18-39

10641

40K→25.2M

24.9 - 25.2 mi

Top 92%
×1story
+13ft-16ft

Overall

24472

Females

10421

F18-39

10421

25.2M→Finish

25.2 - 26.2 mi

Top 92%
×2stories
+22ft-21ft

Overall

24434

Females

10374

F18-39

10374

Passing Analysis

Category:
Athletes Passed
706
Passed By
1573
Net Change
-867
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#23707
5K → 10K192216-24#23707#23731
10K → 15K27391-364#23731#24095
15K → 20K62223-161#24095#24256
20K → Half1342-29#24256#24285
Half → 25K8589-4#24285#24289
25K → 30K15083+67#24289#24222
30K → 20M7536+39#24222#24183
20M → 21M5815+43#24183#24140
21M → 35K3105-102#24140#24242
35K → 23M4164-160#24242#24402
23M → 24M8108-100#24402#24502
24M → 40K951-42#24502#24544
40K → 25.2M719-12#24544#24556
25.2M → Finish1331-18#24556#24574
TOTALS7061573-867
📊

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