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BOSTON MARATHON 2023

Julia Skinner

MD

Bib: 22514 F

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Top 48%
Division (F45-49)
#0 / 1817
Race Day Weather
49°/39°F
light intensity drizzle

Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
469 ft elev
5K· 3.11 mi
8:27/mi
26:14
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
8:31/mi
52:42
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
8:31/mi
1:19:09
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
8:30/mi
1:45:32
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
8:33/mi
1:51:22
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
8:33/mi
2:12:07
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
8:47/mi
2:39:23
↑ 181↓ 1480.2%
138 ft elev
20M
9:23/mi
2:52:08
↑ 64↓ 500.2%
148 ft elev
21M
9:23/mi
3:01:30
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
8:59/mi
3:08:13
↑ 17↓ 861.7%
156 ft elev
23M
9:33/mi
3:20:11
↑ 23↓ 630.6%
116 ft elev
24M
9:27/mi
3:29:38
↓ 821.3%
34 ft elev
40K· 24.85 mi
9:40/mi
3:37:54
↓ 200.3%
20 ft elev
25.2M
10:26/mi
3:41:30
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
9:31/mi
3:51:12
↑ 22↓ 21
17 ft elev
Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent

The Course

Half Splits

1st Half· via Half
1:51:228:30 /mi⚡ faster
2nd Half
1:59:509:08 /mi+7.6%
Positive split — 7.6% slower in the second half
Is this your race?

Your race, unpacked

See your splits, ranks & AI insights.

Checkpoint Splits

CheckpointTimeAvg PaceSegment LengthSegment TimeSegment PaceTrendDiff
5K
26:148:273.11 mi26:14
8:27
-
10K
52:428:293.10 mi26:28
8:31
+0:04
15K
1:19:098:303.11 mi26:27
8:31
0:00
20K
1:45:328:303.11 mi26:23
8:30
-0:01
Half(13.11 mi)
1:51:228:300.68 mi5:50
8:33
+0:03
25K
2:12:078:302.42 mi20:45
8:33
0:00
30K
2:39:238:333.11 mi27:16
8:47
+0:14
20M
2:52:088:361.36 mi12:45
9:23
+0:36
21M
3:01:308:391.00 mi9:22
9:23
0:00
35K
3:08:138:390.75 mi6:43
8:59
-0:24
23M
3:20:118:421.25 mi11:58
9:33
+0:34
24M
3:29:388:441.00 mi9:27
9:27
-0:06
40K
3:37:548:460.85 mi8:16
9:40
+0:13
25.2M
3:41:308:470.35 mi3:36
10:26
+0:46
Finish(26.22 mi)
3:51:128:491.02 mi9:42
9:31
-0:55
Trend:
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoints & Pacing

Pace Line

Fastest Pace

8:27 /mi

Average Pace

8:49 /mi

Slowest Pace

10:26 /mi

Loading chart...
Fastest
Middle
Slowest
Average

Segments

Time at Faster Pace

2:12:07

57% of race

Time at Steady Pace

33:59

15% of race

Time at Slower Pace

1:05:06

28% of race

Average Pace: 8:49 /mi

Loading chart...
Faster pace (< avg)
Steady pace (≈ avg)
Slower pace (> avg)

Heatmap

Loading...
0mi6.6mi13.1mi19.7mi26.2mi
Pace:
Faster
Steady
Slower

Checkpoint and Segment Rankings

CheckpointSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi17190606060601791564466446
10K3.10 mi17797-6076401-3416401-3411837567056705
15K3.11 mi17810-136408-76408-71791564466446
20K3.11 mi17504+3066218+1906218+1901681358315831
Half(13.11 mi)0.68 mi17534-306240-226240-221803865026502
25K2.42 mi17352+1826153+876153+871655857605760
30K3.11 mi17056+2965999+1545999+1541592754615461
20M1.36 mi17177-1216086-876086-871836369526952
21M1.00 mi17051+1266024+626024+621536952745274
35K0.75 mi17091-406055-316055-311783567376737
23M1.25 mi17193-1026130-756130-751855771567156
24M1.00 mi17313-1206213-836213-831905174717471
40K0.85 mi17406-936286-736286-731892974527452
25.2M0.35 mi17448-426321-356321-351891874597459
Finish(26.22 mi)1.02 mi17609-1616423-1026423-1022020081178117

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 67%
×21story building
+97ft-345ft

Overall

17915

Females

6446

F45-49

6446

5K→10K

3.1 - 6.2 mi

Top 69%
×5story building
+79ft-138ft

Overall

18375

Females

6705

F45-49

6705

10K→15K

6.2 - 9.3 mi

Top 67%
×3story building
+67ft-78ft

Overall

17915

Females

6446

F45-49

6446

15K→20K

9.3 - 12.4 mi

Top 63%
×5story building
+106ft-86ft

Overall

16813

Females

5831

F45-49

5831

20K→Half

12.4 - 13.1 mi

Top 68%
×2story building
+19ft-37ft

Overall

18038

Females

6502

F45-49

6502

Half→25K

13.1 - 15.5 mi

Top 62%
×4story building
+66ft-88ft

Overall

16558

Females

5760

F45-49

5760

25K→30K

15.5 - 18.6 mi

Top 60%
×9story building
+181ft-148ft

Overall

15927

Females

5461

F45-49

5461

30K→20M

18.6 - 20.0 mi

Top 69%
×5story building
+64ft-50ft

Overall

18363

Females

6952

F45-49

6952

20M→21M

20.0 - 21.0 mi

Top 58%
×8story building
+106ft-24ft

Overall

15369

Females

5274

F45-49

5274

21M→35K

21.0 - 21.8 mi

Top 67%
×7story building
+17ft-86ft

Overall

17835

Females

6737

F45-49

6737

35K→23M

21.8 - 23.0 mi

Top 70%
×5story building
+23ft-63ft

Overall

18557

Females

7156

F45-49

7156

23M→24M

23.0 - 24.0 mi

Top 72%
×6story building
+12ft-82ft

Overall

19051

Females

7471

F45-49

7471

24M→40K

24.0 - 24.9 mi

Top 71%
×1story
+6ft-20ft

Overall

18929

Females

7452

F45-49

7452

40K→25.2M

24.9 - 25.2 mi

Top 71%
×1story
+13ft-16ft

Overall

18918

Females

7459

F45-49

7459

25.2M→Finish

25.2 - 26.2 mi

Top 76%
×2story building
+22ft-21ft

Overall

20200

Females

8117

F45-49

8117

Passing Analysis

Category:
Passed
1627
Passed By
2046
Net Change
-419
SegmentPassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#17190
5K → 10K118725-607#17190#17797
10K → 15K191204-13#17797#17810
15K → 20K35145+306#17810#17504
20K → Half2353-30#17504#17534
Half → 25K22038+182#17534#17352
25K → 30K33640+296#17352#17056
30K → 20M45166-121#17056#17177
20M → 21M15731+126#17177#17051
21M → 35K3575-40#17051#17091
35K → 23M53155-102#17091#17193
23M → 24M29149-120#17193#17313
24M → 40K33126-93#17313#17406
40K → 25.2M1860-42#17406#17448
25.2M → Finish18179-161#17448#17609
TOTALS16272046-419

Passing Charts

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