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BOSTON MARATHON 2023

Rebecca Karp

Bib: 15202•F

VA

0:00
0:00
/ mi
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Top 42%
Division (F18-39)
#0 / 4884
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
8:31/mi
26:28
↑ 97↓ 3451.5%
10K· 6.21 mi
8:34/mi
53:04
↑ 79↓ 1380.4%
15K· 9.32 mi
8:34/mi
1:19:42
↑ 67↓ 78
20K· 12.43 mi
8:35/mi
1:46:22
↑ 106↓ 860.1%
Half· 13.11 mi
8:18/mi
1:52:02
↑ 19↓ 370.5%
25K· 15.53 mi
8:21/mi
2:12:17
↑ 66↓ 880.2%
30K· 18.64 mi
8:23/mi
2:38:20
↑ 181↓ 1480.2%
20M
8:17/mi
2:49:36
↑ 64↓ 500.2%
21M
8:37/mi
2:58:13
↑ 106↓ 241.6%
35K· 21.75 mi
7:48/mi
3:04:03
↑ 17↓ 861.7%
23M
8:09/mi
3:14:15
↑ 23↓ 630.6%
24M
7:49/mi
3:22:04
↓ 821.3%
40K· 24.85 mi
7:48/mi
3:28:44
↓ 200.3%
25.2M
8:22/mi
3:31:37
↑ 13↓ 160.2%
Finish· 26.22 mi
7:32/mi
3:39:18
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:52:02
Pace8:33 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:47:16
Pace8:11 /mi
📊Negative Split: 4.3% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:58:0426:288:3126:28
8:31
-
10K
6.21 mi11:24:4053:048:3226:36
8:34
+0:03
15K
9.32 mi11:51:181:19:428:3326:38
8:34
0:00
20K
12.43 mi12:17:581:46:228:3426:40
8:35
+0:01
Half
13.11 mi12:23:381:52:028:335:40
8:18
-0:17
25K
15.53 mi12:43:532:12:178:3120:15
8:21
+0:03
30K
18.64 mi13:09:562:38:208:3026:03
8:23
+0:02
20M
20.00 mi13:21:122:49:368:2911:16
8:17
-0:06
21M
21.00 mi13:29:492:58:138:298:37
8:37
+0:20
35K
21.75 mi13:35:393:04:038:285:50
7:48
-0:49
23M
23.00 mi13:45:513:14:158:2710:12
8:09
+0:21
24M
24.00 mi13:53:403:22:048:257:49
7:49
-0:20
40K
24.85 mi14:00:203:28:448:246:40
7:48
-0:01
25.2M
25.20 mi14:03:133:31:378:242:53
8:22
+0:34
Finish
26.22 mi14:10:543:39:188:227:41
7:32
-0:50

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

7:32 /mi

Average Pace

8:22 /mi

Slowest Pace

8:37 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

49:28

23% of race

Time at Steady Pace

2:49:50

77% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:22 /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 mi10:58:0426:288:3126:28
8:31
#17684
10K
6.21 mi11:24:4053:048:3226:36
8:34
#18149
15K
9.32 mi11:51:181:19:428:3326:38
8:34
#18181
20K
12.43 mi12:17:581:46:228:3426:40
8:35
#17957
Half
13.11 mi12:23:381:52:028:335:40
8:18
#17860
25K
15.53 mi12:43:532:12:178:3120:15
8:21
#17418
30K
18.64 mi13:09:562:38:208:3026:03
8:23
#16737
20M
20.00 mi13:21:122:49:368:2911:16
8:17
#16408
21M
21.00 mi13:29:492:58:138:298:37
8:37
#16092
35K
21.75 mi13:35:393:04:038:285:50
7:48
#15882
23M
23.00 mi13:45:513:14:158:2710:12
8:09
#15594
24M
24.00 mi13:53:403:22:048:257:49
7:49
#15356
40K
24.85 mi14:00:203:28:448:246:40
7:48
#15100
25.2M
25.20 mi14:03:133:31:378:242:53
8:22
#14994
Finish
26.22 mi14:10:543:39:188:227:41
7:32
#14753
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi176846360636018274(Top 69%)6656(Top 58%)6656(Top 136%)
10K6.21 mi3.10 mi18149-4656615-2556615-25518635(Top 70%)6851(Top 60%)6851(Top 140%)
15K9.32 mi3.11 mi18181-326630-156630-1518274(Top 69%)6656(Top 58%)6656(Top 136%)
20K12.43 mi3.11 mi17957+2246496+1346496+13417386(Top 65%)6157(Top 54%)6157(Top 126%)
Half13.11 mi0.68 mi17860+976439+576439+5716515(Top 62%)5598(Top 49%)5598(Top 115%)
25K15.53 mi2.42 mi17418+4426189+2506189+25015275(Top 57%)4999(Top 44%)4999(Top 102%)
30K18.64 mi3.11 mi16737+6815819+3705819+37013611(Top 51%)4101(Top 36%)4101(Top 84%)
20M20.00 mi1.36 mi16408+3295652+1675652+16712345(Top 46%)3496(Top 31%)3496(Top 72%)
21M21.00 mi1.00 mi16092+3165467+1855467+18511207(Top 42%)2989(Top 26%)2989(Top 61%)
35K21.75 mi0.75 mi15882+2105361+1065361+10610723(Top 40%)2757(Top 24%)2757(Top 56%)
23M23.00 mi1.25 mi15594+2885222+1395222+13910850(Top 41%)2952(Top 26%)2952(Top 60%)
24M24.00 mi1.00 mi15356+2385075+1475075+1479987(Top 38%)2605(Top 23%)2605(Top 53%)
40K24.85 mi0.85 mi15100+2564937+1384937+1388726(Top 33%)2062(Top 18%)2062(Top 42%)
25.2M25.20 mi0.35 mi14994+1064886+514886+518803(Top 33%)2206(Top 19%)2206(Top 45%)
Finish26.22 mi1.02 mi14753+2414760+1264760+1268898(Top 33%)2211(Top 19%)2211(Top 45%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 69%
×21story building
+97ft-345ft

Overall

18274

Females

6656

F18-39

6656

5K→10K

3.1 - 6.2 mi

Top 70%
×5story building
+79ft-138ft

Overall

18635

Females

6851

F18-39

6851

10K→15K

6.2 - 9.3 mi

Top 69%
×3story building
+67ft-78ft

Overall

18274

Females

6656

F18-39

6656

15K→20K

9.3 - 12.4 mi

Top 65%
×5story building
+106ft-86ft

Overall

17386

Females

6157

F18-39

6157

20K→Half

12.4 - 13.1 mi

Top 62%
×2story building
+19ft-37ft

Overall

16515

Females

5598

F18-39

5598

Half→25K

13.1 - 15.5 mi

Top 57%
×4story building
+66ft-88ft

Overall

15275

Females

4999

F18-39

4999

25K→30K

15.5 - 18.6 mi

Top 51%
×9story building
+181ft-148ft

Overall

13611

Females

4101

F18-39

4101

30K→20M

18.6 - 20.0 mi

Top 46%
×5story building
+64ft-50ft

Overall

12345

Females

3496

F18-39

3496

20M→21M

20.0 - 21.0 mi

Top 42%
×8story building
+106ft-24ft

Overall

11207

Females

2989

F18-39

2989

21M→35K

21.0 - 21.8 mi

Top 40%
×7story building
+17ft-86ft

Overall

10723

Females

2757

F18-39

2757

35K→23M

21.8 - 23.0 mi

Top 41%
×5story building
+23ft-63ft

Overall

10850

Females

2952

F18-39

2952

23M→24M

23.0 - 24.0 mi

Top 38%
×6story building
+12ft-82ft

Overall

9987

Females

2605

F18-39

2605

24M→40K

24.0 - 24.9 mi

Top 33%
×1story
+6ft-20ft

Overall

8726

Females

2062

F18-39

2062

40K→25.2M

24.9 - 25.2 mi

Top 33%
×1story
+13ft-16ft

Overall

8803

Females

2206

F18-39

2206

25.2M→Finish

25.2 - 26.2 mi

Top 33%
×2story building
+22ft-21ft

Overall

8898

Females

2211

F18-39

2211

Passing Analysis

Category:
Athletes Passed
3818
Passed By
887
Net Change
+2931
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#17684
5K → 10K125590-465#17684#18149
10K → 15K176208-32#18149#18181
15K → 20K29470+224#18181#17957
20K → Half1058+97#17957#17860
Half → 25K4453+442#17860#17418
25K → 30K6821+681#17418#16737
30K → 20M3290+329#16737#16408
20M → 21M3160+316#16408#16092
21M → 35K2100+210#16092#15882
35K → 23M2891+288#15882#15594
23M → 24M2391+238#15594#15356
24M → 40K2571+256#15356#15100
40K → 25.2M1060+106#15100#14994
25.2M → Finish2454+241#14994#14753
TOTALS3818887+2931
📊

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