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BOSTON MARATHON 2023

Carolyn Belarde

Bib: 16220•F

WA

0:00
0:00
/ mi
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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
25:10
Rank: #14733
Start → 5K
25:10 | 8:06/mi
10K· 6.21 mi
49:33
Rank: #14213 (+520)
5K → 10K
24:23 | 7:51/mi
15K· 9.32 mi
1:14:37
Rank: #14403 (-190)
10K → 15K
25:04 | 8:04/mi
20K· 12.43 mi
1:40:17
Rank: #14655 (-252)
15K → 20K
25:40 | 8:16/mi
Half· 13.11 mi
1:45:49
Rank: #14669 (-14)
20K → Half
5:32 | 8:07/mi
25K· 15.53 mi
2:06:49
Rank: #15092 (-423)
Half → 25K
21:00 | 8:40/mi
30K· 18.64 mi
2:34:43
Rank: #15482 (-390)
25K → 30K
27:54 | 8:59/mi
20M
2:47:23
Rank: #15669 (-187)
30K → 20M
12:40 | 9:19/mi
21M
2:58:23
Rank: #16148 (-479)
20M → 21M
11:00 | 11:00/mi
35K· 21.75 mi
3:05:21
Rank: #16293 (-145)
21M → 35K
6:58 | 9:19/mi
23M
3:17:10
Rank: #16406 (-113)
35K → 23M
11:49 | 9:26/mi
24M
3:26:14
Rank: #16478 (-72)
23M → 24M
9:04 | 9:04/mi
40K· 24.85 mi
3:34:04
Rank: #16474 (+4)
24M → 40K
7:50 | 9:10/mi
25.2M
3:37:37
Rank: #16516 (-42)
40K → 25.2M
3:33 | 10:18/mi
Finish· 26.22 mi
3:46:21
Rank: #16475 (+41)
25.2M → Finish
8:44 | 8:34/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:45:49
Pace8:04 /mi
2nd Half
Distance13.11 mi
Time2:00:32
Pace9:12 /mi
📊Positive Split: 13.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:16:3525:108:0625:10
8:06
-
10K
6.21 mi11:40:5849:337:5824:23
7:51
-0:15
15K
9.32 mi12:06:021:14:378:0025:04
8:04
+0:13
20K
12.43 mi12:31:421:40:178:0425:40
8:16
+0:12
Half
13.11 mi12:37:141:45:498:045:32
8:07
-0:09
25K
15.53 mi12:58:142:06:498:1021:00
8:40
+0:33
30K
18.64 mi13:26:082:34:438:1827:54
8:59
+0:19
20M
20.00 mi13:38:482:47:238:2212:40
9:19
+0:20
21M
21.00 mi13:49:482:58:238:3011:00
11:00
+1:41
35K
21.75 mi13:56:463:05:218:316:58
9:19
-1:41
23M
23.00 mi14:08:353:17:108:3411:49
9:26
+0:07
24M
24.00 mi14:17:393:26:148:369:04
9:04
-0:22
40K
24.85 mi14:25:293:34:048:377:50
9:10
+0:06
25.2M
25.20 mi14:29:023:37:378:383:33
10:18
+1:08
Finish
26.22 mi14:37:463:46:218:388:44
8:34
-1:44

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

7:51 /mi

Average Pace

8:38 /mi

Slowest Pace

11:00 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:45:49

47% of race

Time at Steady Pace

1:34:10

42% of race

Time at Slower Pace

26:22

12% of race

Average Pace: 8:38 /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 mi11:16:3525:108:0625:10
8:06
#14733
10K
6.21 mi11:40:5849:337:5824:23
7:51
#14213
15K
9.32 mi12:06:021:14:378:0025:04
8:04
#14403
20K
12.43 mi12:31:421:40:178:0425:40
8:16
#14655
Half
13.11 mi12:37:141:45:498:045:32
8:07
#14669
25K
15.53 mi12:58:142:06:498:1021:00
8:40
#15092
30K
18.64 mi13:26:082:34:438:1827:54
8:59
#15482
20M
20.00 mi13:38:482:47:238:2212:40
9:19
#15669
21M
21.00 mi13:49:482:58:238:3011:00
11:00
#16148
35K
21.75 mi13:56:463:05:218:316:58
9:19
#16293
23M
23.00 mi14:08:353:17:108:3411:49
9:26
#16406
24M
24.00 mi14:17:393:26:148:369:04
9:04
#16478
40K
24.85 mi14:25:293:34:048:377:50
9:10
#16474
25.2M
25.20 mi14:29:023:37:378:383:33
10:18
#16516
Finish
26.22 mi14:37:463:46:218:388:44
8:34
#16475
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi147334478447814966(Top 56%)4662(Top 41%)4662(Top 95%)
10K6.21 mi3.10 mi14213+5204176+3024176+30213569(Top 51%)3779(Top 33%)3779(Top 77%)
15K9.32 mi3.11 mi14403-1904303-1274303-12714966(Top 56%)4662(Top 41%)4662(Top 95%)
20K12.43 mi3.11 mi14655-2524465-1624465-16215374(Top 58%)4952(Top 43%)4952(Top 101%)
Half13.11 mi0.68 mi14669-144475-104475-1015280(Top 57%)4865(Top 43%)4865(Top 100%)
25K15.53 mi2.42 mi15092-4234768-2934768-29317170(Top 64%)6098(Top 53%)6098(Top 125%)
30K18.64 mi3.11 mi15482-3905062-2945062-29417064(Top 64%)6100(Top 53%)6100(Top 125%)
20M20.00 mi1.36 mi15669-1875189-1275189-12718112(Top 68%)6798(Top 60%)6798(Top 139%)
21M21.00 mi1.00 mi16148-4795503-3145503-31420830(Top 78%)8366(Top 73%)8366(Top 171%)
35K21.75 mi0.75 mi16293-1455598-955598-9519216(Top 72%)7499(Top 66%)7499(Top 154%)
23M23.00 mi1.25 mi16406-1135674-765674-7618074(Top 68%)6901(Top 60%)6901(Top 141%)
24M24.00 mi1.00 mi16478-725735-615735-6117546(Top 66%)6647(Top 58%)6647(Top 136%)
40K24.85 mi0.85 mi16474+45758-235758-2316940(Top 64%)6364(Top 56%)6364(Top 130%)
25.2M25.20 mi0.35 mi16516-425784-265784-2618464(Top 69%)7197(Top 63%)7197(Top 147%)
Finish26.22 mi1.02 mi16475+415772+125772+1215851(Top 60%)5730(Top 50%)5730(Top 117%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 56%
×21stories
+97ft-345ft

Overall

14966

Females

4662

F18-39

4662

5K→10K

3.1 - 6.2 mi

Top 51%
×5stories
+79ft-138ft

Overall

13569

Females

3779

F18-39

3779

10K→15K

6.2 - 9.3 mi

Top 56%
×3stories
+67ft-78ft

Overall

14966

Females

4662

F18-39

4662

15K→20K

9.3 - 12.4 mi

Top 58%
×5stories
+106ft-86ft

Overall

15374

Females

4952

F18-39

4952

20K→Half

12.4 - 13.1 mi

Top 57%
×2stories
+19ft-37ft

Overall

15280

Females

4865

F18-39

4865

Half→25K

13.1 - 15.5 mi

Top 64%
×4stories
+66ft-88ft

Overall

17170

Females

6098

F18-39

6098

25K→30K

15.5 - 18.6 mi

Top 64%
×9stories
+181ft-148ft

Overall

17064

Females

6100

F18-39

6100

30K→20M

18.6 - 20.0 mi

Top 68%
×5stories
+64ft-50ft

Overall

18112

Females

6798

F18-39

6798

20M→21M

20.0 - 21.0 mi

Top 78%
×8stories
+106ft-24ft

Overall

20830

Females

8366

F18-39

8366

21M→35K

21.0 - 21.8 mi

Top 72%
×7stories
+17ft-86ft

Overall

19216

Females

7499

F18-39

7499

35K→23M

21.8 - 23.0 mi

Top 68%
×5stories
+23ft-63ft

Overall

18074

Females

6901

F18-39

6901

23M→24M

23.0 - 24.0 mi

Top 66%
×6stories
+12ft-82ft

Overall

17546

Females

6647

F18-39

6647

24M→40K

24.0 - 24.9 mi

Top 64%
×1story
+6ft-20ft

Overall

16940

Females

6364

F18-39

6364

40K→25.2M

24.9 - 25.2 mi

Top 69%
×1story
+13ft-16ft

Overall

18464

Females

7197

F18-39

7197

25.2M→Finish

25.2 - 26.2 mi

Top 60%
×2stories
+22ft-21ft

Overall

15851

Females

5730

F18-39

5730

Passing Analysis

Category:
Athletes Passed
1358
Passed By
3100
Net Change
-1742
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#14733
5K → 10K639119+520#14733#14213
10K → 15K118308-190#14213#14403
15K → 20K111363-252#14403#14655
20K → Half2741-14#14655#14669
Half → 25K54477-423#14669#15092
25K → 30K78468-390#15092#15482
30K → 20M42229-187#15482#15669
20M → 21M15494-479#15669#16148
21M → 35K15160-145#16148#16293
35K → 23M49162-113#16293#16406
23M → 24M41113-72#16406#16478
24M → 40K7167+4#16478#16474
40K → 25.2M1759-42#16474#16516
25.2M → Finish8140+41#16516#16475
TOTALS13583100-1742
📊

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