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BOSTON MARATHON 2023

Delphine Krakoff

Bib: 21690•F

CT

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Division (F50-54)
#0 / 1207
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
8:40/mi
26:56
↑ 97↓ 3451.5%
10K· 6.21 mi
8:40/mi
53:52
↑ 79↓ 1380.4%
15K· 9.32 mi
8:40/mi
1:20:47
↑ 67↓ 78
20K· 12.43 mi
8:40/mi
1:47:43
↑ 106↓ 860.1%
Half· 13.11 mi
8:45/mi
1:53:41
↑ 19↓ 370.5%
25K· 15.53 mi
8:52/mi
2:15:11
↑ 66↓ 880.2%
30K· 18.64 mi
9:24/mi
2:44:24
↑ 181↓ 1480.2%
20M
11:23/mi
2:59:52
↑ 64↓ 500.2%
21M
11:07/mi
3:10:59
↑ 106↓ 241.6%
35K· 21.75 mi
9:45/mi
3:18:17
↑ 17↓ 861.7%
23M
10:12/mi
3:31:03
↑ 23↓ 630.6%
24M
9:39/mi
3:40:42
↓ 821.3%
40K· 24.85 mi
10:48/mi
3:49:56
↓ 200.3%
25.2M
11:48/mi
3:54:00
↑ 13↓ 160.2%
Finish· 26.22 mi
10:08/mi
4:04:20
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:53:41
Pace8:40 /mi
2nd Half
Distance13.11 mi
Time2:10:39
Pace9:58 /mi
📊Positive Split: 14.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:20:0626:568:4026:56
8:40
-
10K
6.21 mi11:47:0253:528:4026:56
8:40
0:00
15K
9.32 mi12:13:571:20:478:4026:55
8:40
0:00
20K
12.43 mi12:40:531:47:438:4026:56
8:40
0:00
Half
13.11 mi12:46:511:53:418:405:58
8:45
+0:05
25K
15.53 mi13:08:212:15:118:4221:30
8:52
+0:07
30K
18.64 mi13:37:342:44:248:4929:13
9:24
+0:32
20M
20.00 mi13:53:022:59:529:0015:28
11:23
+1:59
21M
21.00 mi14:04:093:10:599:0611:07
11:07
-0:16
35K
21.75 mi14:11:273:18:179:077:18
9:45
-1:22
23M
23.00 mi14:24:133:31:039:1112:46
10:12
+0:27
24M
24.00 mi14:33:523:40:429:129:39
9:39
-0:33
40K
24.85 mi14:43:063:49:569:159:14
10:48
+1:09
25.2M
25.20 mi14:47:103:54:009:174:04
11:48
+1:00
Finish
26.22 mi14:57:304:04:209:2010:20
10:08
-1:40

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

8:40 /mi

Average Pace

9:20 /mi

Slowest Pace

11:48 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:15:11

55% of race

Time at Steady Pace

56:30

23% of race

Time at Slower Pace

52:39

22% of race

Average Pace: 9:19 /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 mi11:20:0626:568:4026:56
8:40
#18694
10K
6.21 mi11:47:0253:528:4026:56
8:40
#18947
15K
9.32 mi12:13:571:20:478:4026:55
8:40
#18858
20K
12.43 mi12:40:531:47:438:4026:56
8:40
#18624
Half
13.11 mi12:46:511:53:418:405:58
8:45
#18653
25K
15.53 mi13:08:212:15:118:4221:30
8:52
#18592
30K
18.64 mi13:37:342:44:248:4929:13
9:24
#18695
20M
20.00 mi13:53:022:59:529:0015:28
11:23
#19332
21M
21.00 mi14:04:093:10:599:0611:07
11:07
#19491
35K
21.75 mi14:11:273:18:179:077:18
9:45
#19552
23M
23.00 mi14:24:133:31:039:1112:46
10:12
#19643
24M
24.00 mi14:33:523:40:429:129:39
9:39
#19646
40K
24.85 mi14:43:063:49:569:159:14
10:48
#19777
25.2M
25.20 mi14:47:103:54:009:174:04
11:48
#19840
Finish
26.22 mi14:57:304:04:209:2010:20
10:08
#19956
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi186946999699918812(Top 71%)6990(Top 61%)6990(Top 579%)
10K6.21 mi3.10 mi18947-2537115-1167115-11619257(Top 72%)7239(Top 63%)7239(Top 600%)
15K9.32 mi3.11 mi18858+897043+727043+7218812(Top 71%)6990(Top 61%)6990(Top 579%)
20K12.43 mi3.11 mi18624+2346885+1586885+15817943(Top 67%)6484(Top 57%)6484(Top 537%)
Half13.11 mi0.68 mi18653-296906-216906-2119266(Top 72%)7257(Top 64%)7257(Top 601%)
25K15.53 mi2.42 mi18592+616889+176889+1718323(Top 69%)6744(Top 59%)6744(Top 559%)
30K18.64 mi3.11 mi18695-1036971-826971-8219064(Top 72%)7234(Top 63%)7234(Top 599%)
20M20.00 mi1.36 mi19332-6377347-3767347-37623331(Top 88%)9696(Top 85%)9696(Top 803%)
21M21.00 mi1.00 mi19491-1597453-1067453-10621068(Top 79%)8496(Top 74%)8496(Top 704%)
35K21.75 mi0.75 mi19552-617493-407493-4020638(Top 78%)8290(Top 73%)8290(Top 687%)
23M23.00 mi1.25 mi19643-917547-547547-5420560(Top 77%)8269(Top 72%)8269(Top 685%)
24M24.00 mi1.00 mi19646-37564-177564-1719738(Top 74%)7829(Top 69%)7829(Top 649%)
40K24.85 mi0.85 mi19777-1317656-927656-9221940(Top 82%)9117(Top 80%)9117(Top 755%)
25.2M25.20 mi0.35 mi19840-637695-397695-3922133(Top 83%)9192(Top 80%)9192(Top 762%)
Finish26.22 mi1.02 mi19956-1167768-737768-7322134(Top 83%)9184(Top 80%)9184(Top 761%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 71%
×21story building
+97ft-345ft

Overall

18812

Females

6990

F50-54

6990

5K→10K

3.1 - 6.2 mi

Top 72%
×5story building
+79ft-138ft

Overall

19257

Females

7239

F50-54

7239

10K→15K

6.2 - 9.3 mi

Top 71%
×3story building
+67ft-78ft

Overall

18812

Females

6990

F50-54

6990

15K→20K

9.3 - 12.4 mi

Top 67%
×5story building
+106ft-86ft

Overall

17943

Females

6484

F50-54

6484

20K→Half

12.4 - 13.1 mi

Top 72%
×2story building
+19ft-37ft

Overall

19266

Females

7257

F50-54

7257

Half→25K

13.1 - 15.5 mi

Top 69%
×4story building
+66ft-88ft

Overall

18323

Females

6744

F50-54

6744

25K→30K

15.5 - 18.6 mi

Top 72%
×9story building
+181ft-148ft

Overall

19064

Females

7234

F50-54

7234

30K→20M

18.6 - 20.0 mi

Top 88%
×5story building
+64ft-50ft

Overall

23331

Females

9696

F50-54

9696

20M→21M

20.0 - 21.0 mi

Top 79%
×8story building
+106ft-24ft

Overall

21068

Females

8496

F50-54

8496

21M→35K

21.0 - 21.8 mi

Top 78%
×7story building
+17ft-86ft

Overall

20638

Females

8290

F50-54

8290

35K→23M

21.8 - 23.0 mi

Top 77%
×5story building
+23ft-63ft

Overall

20560

Females

8269

F50-54

8269

23M→24M

23.0 - 24.0 mi

Top 74%
×6story building
+12ft-82ft

Overall

19738

Females

7829

F50-54

7829

24M→40K

24.0 - 24.9 mi

Top 82%
×1story
+6ft-20ft

Overall

21940

Females

9117

F50-54

9117

40K→25.2M

24.9 - 25.2 mi

Top 83%
×1story
+13ft-16ft

Overall

22133

Females

9192

F50-54

9192

25.2M→Finish

25.2 - 26.2 mi

Top 83%
×2story building
+22ft-21ft

Overall

22134

Females

9184

F50-54

9184

Passing Analysis

Category:
Athletes Passed
1272
Passed By
2534
Net Change
-1262
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18694
5K → 10K226479-253#18694#18947
10K → 15K233144+89#18947#18858
15K → 20K29359+234#18858#18624
20K → Half1544-29#18624#18653
Half → 25K15796+61#18653#18592
25K → 30K131234-103#18592#18695
30K → 20M11648-637#18695#19332
20M → 21M43202-159#19332#19491
21M → 35K2485-61#19491#19552
35K → 23M48139-91#19552#19643
23M → 24M5053-3#19643#19646
24M → 40K19150-131#19646#19777
40K → 25.2M669-63#19777#19840
25.2M → Finish16132-116#19840#19956
TOTALS12722534-1262
📊

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