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BOSTON MARATHON 2023

Jaclyn Ross

Bib: 25693•F

MA

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
29:16
Rank: #21854
Start → 5K
9:25/mi
29:16 split
10K· 6.21 mi
56:43
Rank: #21166 (+688)
5K → 10K
8:50/mi
27:27 split
15K· 9.32 mi
1:24:19
Rank: #20785 (+381)
10K → 15K
8:53/mi
27:36 split
20K· 12.43 mi
1:53:39
Rank: #20974 (-189)
15K → 20K
9:26/mi
29:20 split
Half· 13.11 mi
1:59:50
Rank: #20953 (+21)
20K → Half
9:04/mi
6:11 split
25K· 15.53 mi
2:24:37
Rank: #21310 (-357)
Half → 25K
10:13/mi
24:47 split
30K· 18.64 mi
3:03:23
Rank: #22411 (-1101)
25K → 30K
12:29/mi
38:46 split
20M
3:18:21
Rank: #22439 (-28)
30K → 20M
11:01/mi
14:58 split
21M
3:29:21
Rank: #22354 (+85)
20M → 21M
11:01/mi
11:00 split
35K· 21.75 mi
3:36:40
Rank: #22279 (+75)
21M → 35K
9:47/mi
7:19 split
23M
3:53:52
Rank: #22627 (-348)
35K → 23M
13:44/mi
17:12 split
24M
4:04:12
Rank: #22583 (+44)
23M → 24M
10:20/mi
10:20 split
40K· 24.85 mi
4:13:25
Rank: #22565 (+18)
24M → 40K
10:47/mi
9:13 split
25.2M
4:17:00
Rank: #22512 (+53)
40K → 25.2M
10:23/mi
3:35 split
Finish· 26.22 mi
4:26:41
Rank: #22442 (+70)
25.2M → Finish
9:30/mi
9:41 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:59:50
Pace9:08 /mi
2nd Half
Distance13.11 mi
Time2:26:51
Pace11:12 /mi
📊Positive Split: 22.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:45:2529:169:2529:16
9:25
-
10K
6.21 mi12:12:5256:439:0827:27
8:50
-0:35
15K
9.32 mi12:40:281:24:199:0327:36
8:53
+0:03
20K
12.43 mi13:09:481:53:399:0929:20
9:26
+0:33
Half
13.11 mi13:15:591:59:509:086:11
9:04
-0:22
25K
15.53 mi13:40:462:24:379:1924:47
10:13
+1:09
30K
18.64 mi14:19:323:03:239:5038:46
12:29
+2:16
20M
20.00 mi14:34:303:18:219:5514:58
11:01
-1:28
21M
21.00 mi14:45:303:29:219:5811:00
11:01
0:00
35K
21.75 mi14:52:493:36:409:587:19
9:47
-1:14
23M
23.00 mi15:10:013:53:5210:1017:12
13:44
+3:57
24M
24.00 mi15:20:214:04:1210:1110:20
10:20
-3:24
40K
24.85 mi15:29:344:13:2510:129:13
10:47
+0:27
25.2M
25.20 mi15:33:094:17:0010:123:35
10:23
-0:24
Finish
26.22 mi15:42:504:26:4110:119:41
9:30
-0:53

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

8:50 /mi

Average Pace

10:11 /mi

Slowest Pace

13:44 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:09:31

49% of race

Time at Steady Pace

55:14

21% of race

Time at Slower Pace

1:21:56

31% of race

Average Pace: 10:10 /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 mi11:45:2529:169:2529:16
9:25
#21854
10K
6.21 mi12:12:5256:439:0827:27
8:50
#21166
15K
9.32 mi12:40:281:24:199:0327:36
8:53
#20785
20K
12.43 mi13:09:481:53:399:0929:20
9:26
#20974
Half
13.11 mi13:15:591:59:509:086:11
9:04
#20953
25K
15.53 mi13:40:462:24:379:1924:47
10:13
#21310
30K
18.64 mi14:19:323:03:239:5038:46
12:29
#22411
20M
20.00 mi14:34:303:18:219:5514:58
11:01
#22439
21M
21.00 mi14:45:303:29:219:5811:00
11:01
#22354
35K
21.75 mi14:52:493:36:409:587:19
9:47
#22279
23M
23.00 mi15:10:013:53:5210:1017:12
13:44
#22627
24M
24.00 mi15:20:214:04:1210:1110:20
10:20
#22583
40K
24.85 mi15:29:344:13:2510:129:13
10:47
#22565
25.2M
25.20 mi15:33:094:17:0010:123:35
10:23
#22512
Finish
26.22 mi15:42:504:26:4110:119:41
9:30
#22442
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 mi218548812881219970(Top 75%)7673(Top 67%)7673(Top 157%)
10K6.21 mi3.10 mi21166+6888402+4108402+41020127(Top 76%)7774(Top 68%)7774(Top 159%)
15K9.32 mi3.11 mi20785+3818169+2338169+23319970(Top 75%)7673(Top 67%)7673(Top 157%)
20K12.43 mi3.11 mi20974-1898256-878256-8721367(Top 80%)8447(Top 74%)8447(Top 173%)
Half13.11 mi0.68 mi20953+218246+108246+1020745(Top 78%)8107(Top 71%)8107(Top 166%)
25K15.53 mi2.42 mi21310-3578438-1928438-19222668(Top 85%)9203(Top 81%)9203(Top 188%)
30K18.64 mi3.11 mi22411-11019069-6319069-63124976(Top 94%)10555(Top 92%)10555(Top 216%)
20M20.00 mi1.36 mi22439-289100-319100-3122725(Top 85%)9379(Top 82%)9379(Top 192%)
21M21.00 mi1.00 mi22354+859060+409060+4020849(Top 78%)8384(Top 73%)8384(Top 172%)
35K21.75 mi0.75 mi22279+759023+379023+3720728(Top 78%)8359(Top 73%)8359(Top 171%)
23M23.00 mi1.25 mi22627-3489226-2039226-20325647(Top 96%)10975(Top 96%)10975(Top 225%)
24M24.00 mi1.00 mi22583+449211+159211+1521644(Top 81%)8916(Top 78%)8916(Top 183%)
40K24.85 mi0.85 mi22565+189206+59206+521908(Top 82%)9102(Top 80%)9102(Top 186%)
25.2M25.20 mi0.35 mi22512+539183+239183+2318831(Top 71%)7435(Top 65%)7435(Top 152%)
Finish26.22 mi1.02 mi22442+709151+329151+3220166(Top 76%)8102(Top 71%)8102(Top 166%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 75%
×21story building
+97ft-345ft

Overall

19970

Females

7673

F18-39

7673

5K→10K

3.1 - 6.2 mi

Top 76%
×5story building
+79ft-138ft

Overall

20127

Females

7774

F18-39

7774

10K→15K

6.2 - 9.3 mi

Top 75%
×3story building
+67ft-78ft

Overall

19970

Females

7673

F18-39

7673

15K→20K

9.3 - 12.4 mi

Top 80%
×5story building
+106ft-86ft

Overall

21367

Females

8447

F18-39

8447

20K→Half

12.4 - 13.1 mi

Top 78%
×2story building
+19ft-37ft

Overall

20745

Females

8107

F18-39

8107

Half→25K

13.1 - 15.5 mi

Top 85%
×4story building
+66ft-88ft

Overall

22668

Females

9203

F18-39

9203

25K→30K

15.5 - 18.6 mi

Top 94%
×9story building
+181ft-148ft

Overall

24976

Females

10555

F18-39

10555

30K→20M

18.6 - 20.0 mi

Top 85%
×5story building
+64ft-50ft

Overall

22725

Females

9379

F18-39

9379

20M→21M

20.0 - 21.0 mi

Top 78%
×8story building
+106ft-24ft

Overall

20849

Females

8384

F18-39

8384

21M→35K

21.0 - 21.8 mi

Top 78%
×7story building
+17ft-86ft

Overall

20728

Females

8359

F18-39

8359

35K→23M

21.8 - 23.0 mi

Top 96%
×5story building
+23ft-63ft

Overall

25647

Females

10975

F18-39

10975

23M→24M

23.0 - 24.0 mi

Top 81%
×6story building
+12ft-82ft

Overall

21644

Females

8916

F18-39

8916

24M→40K

24.0 - 24.9 mi

Top 82%
×1story
+6ft-20ft

Overall

21908

Females

9102

F18-39

9102

40K→25.2M

24.9 - 25.2 mi

Top 71%
×1story
+13ft-16ft

Overall

18831

Females

7435

F18-39

7435

25.2M→Finish

25.2 - 26.2 mi

Top 76%
×2story building
+22ft-21ft

Overall

20166

Females

8102

F18-39

8102

Passing Analysis

Category:
Athletes Passed
1821
Passed By
2409
Net Change
-588
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#21854
5K → 10K74557+688#21854#21166
10K → 15K43453+381#21166#20785
15K → 20K99288-189#20785#20974
20K → Half4322+21#20974#20953
Half → 25K30387-357#20953#21310
25K → 30K111112-1101#21310#22411
30K → 20M4775-28#22411#22439
20M → 21M9611+85#22439#22354
21M → 35K794+75#22354#22279
35K → 23M14362-348#22279#22627
23M → 24M539+44#22627#22583
24M → 40K3719+18#22583#22565
40K → 25.2M541+53#22565#22512
25.2M → Finish799+70#22512#22442
TOTALS18212409-588
📊

Passing Visuals

Category:
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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