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BOSTON MARATHON 2023

Kristin Dailey

Bib: 5073•F

IL

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 9%
Gender (Female)
#0 / 11423
Top 1.0%
Masters (Masters Women)
#0 / 6539
Top 0.2%
Division (F40-44)
#0 / 1878
Top 0.7%
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
6:48/mi
21:07
↑ 97↓ 3451.5%
10K· 6.21 mi
6:41/mi
41:52
↑ 79↓ 1380.4%
15K· 9.32 mi
6:41/mi
1:02:36
↑ 67↓ 78
20K· 12.43 mi
6:37/mi
1:23:09
↑ 106↓ 860.1%
Half· 13.11 mi
6:37/mi
1:27:40
↑ 19↓ 370.5%
25K· 15.53 mi
6:35/mi
1:43:39
↑ 66↓ 880.2%
30K· 18.64 mi
6:35/mi
2:04:07
↑ 181↓ 1480.2%
20M
6:43/mi
2:13:14
↑ 64↓ 500.2%
21M
6:58/mi
2:20:12
↑ 106↓ 241.6%
35K· 21.75 mi
6:21/mi
2:24:57
↑ 17↓ 861.7%
23M
6:36/mi
2:33:13
↑ 23↓ 630.6%
24M
6:24/mi
2:39:37
↓ 821.3%
40K· 24.85 mi
6:35/mi
2:45:15
↓ 200.3%
25.2M
6:58/mi
2:47:39
↑ 13↓ 160.2%
Finish· 26.22 mi
6:11/mi
2:53:57
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:27:40
Pace6:41 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:26:17
Pace6:35 /mi
📊Negative Split: 1.6% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:24:0521:076:4821:07
6:48
-
10K
6.21 mi10:44:5041:526:4420:45
6:41
-0:07
15K
9.32 mi11:05:341:02:366:4320:45
6:41
0:00
20K
12.43 mi11:26:071:23:096:4120:33
6:37
-0:04
Half
13.11 mi11:30:381:27:406:414:31
6:37
0:00
25K
15.53 mi11:46:371:43:396:4015:59
6:35
-0:02
30K
18.64 mi12:07:052:04:076:3920:28
6:35
0:00
20M
20.00 mi12:16:122:13:146:409:07
6:43
+0:08
21M
21.00 mi12:23:102:20:126:416:58
6:58
+0:15
35K
21.75 mi12:27:552:24:576:404:45
6:21
-0:37
23M
23.00 mi12:36:112:33:136:408:16
6:36
+0:15
24M
24.00 mi12:42:352:39:376:396:24
6:24
-0:12
40K
24.85 mi12:48:132:45:156:395:38
6:35
+0:11
25.2M
25.20 mi12:50:372:47:396:392:24
6:58
+0:23
Finish
26.22 mi12:56:552:53:576:386:18
6:11
-0:47

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

6:11 /mi

Average Pace

6:38 /mi

Slowest Pace

6:58 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:44:35

95% of race

Time at Steady Pace

9:22

5% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:38 /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 mi10:24:0521:076:4821:07
6:48
#4663
10K
6.21 mi10:44:5041:526:4420:45
6:41
#4342
15K
9.32 mi11:05:341:02:366:4320:45
6:41
#4179
20K
12.43 mi11:26:071:23:096:4120:33
6:37
#3779
Half
13.11 mi11:30:381:27:406:414:31
6:37
#3769
25K
15.53 mi11:46:371:43:396:4015:59
6:35
#3520
30K
18.64 mi12:07:052:04:076:3920:28
6:35
#3101
20M
20.00 mi12:16:122:13:146:409:07
6:43
#3013
21M
21.00 mi12:23:102:20:126:416:58
6:58
#2929
35K
21.75 mi12:27:552:24:576:404:45
6:21
#2855
23M
23.00 mi12:36:112:33:136:408:16
6:36
#2742
24M
24.00 mi12:42:352:39:376:396:24
6:24
#2639
40K
24.85 mi12:48:132:45:156:395:38
6:35
#2593
25.2M
25.20 mi12:50:372:47:396:392:24
6:58
#2561
Finish
26.22 mi12:56:552:53:576:386:18
6:11
#2462
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi46633133133896(Top 15%)231(Top 2%)231(Top 12%)
10K6.21 mi3.10 mi4342+321271+42271+424113(Top 15%)251(Top 2%)251(Top 13%)
15K9.32 mi3.11 mi4179+163252+19252+193896(Top 15%)231(Top 2%)231(Top 12%)
20K12.43 mi3.11 mi3779+400206+46206+462968(Top 11%)140(Top 1%)140(Top 7%)
Half13.11 mi0.68 mi3769+10203+3203+33497(Top 13%)189(Top 2%)189(Top 10%)
25K15.53 mi2.42 mi3520+249178+25178+252647(Top 10%)112(Top 1.0%)112(Top 6%)
30K18.64 mi3.11 mi3101+419144+34144+341920(Top 7%)82(Top 0.7%)82(Top 4%)
20M20.00 mi1.36 mi3013+88140+4140+42338(Top 9%)117(Top 1%)117(Top 6%)
21M21.00 mi1.00 mi2929+84133+7133+72034(Top 8%)108(Top 0.9%)108(Top 6%)
35K21.75 mi0.75 mi2855+74129+4129+41799(Top 7%)90(Top 0.8%)90(Top 5%)
23M23.00 mi1.25 mi2742+113122+7122+71799(Top 7%)94(Top 0.8%)94(Top 5%)
24M24.00 mi1.00 mi2639+103118+4118+41702(Top 6%)94(Top 0.8%)94(Top 5%)
40K24.85 mi0.85 mi2593+46116+2116+21903(Top 7%)110(Top 1.0%)110(Top 6%)
25.2M25.20 mi0.35 mi2561+32115+1115+11693(Top 6%)103(Top 0.9%)103(Top 5%)
Finish26.22 mi1.02 mi2462+99110+5110+51243(Top 5%)64(Top 0.6%)64(Top 3%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 15%
×21story building
+97ft-345ft

Overall

3896

Females

231

F40-44

231

5K→10K

3.1 - 6.2 mi

Top 15%
×5story building
+79ft-138ft

Overall

4113

Females

251

F40-44

251

10K→15K

6.2 - 9.3 mi

Top 15%
×3story building
+67ft-78ft

Overall

3896

Females

231

F40-44

231

15K→20K

9.3 - 12.4 mi

Top 11%
×5story building
+106ft-86ft

Overall

2968

Females

140

F40-44

140

20K→Half

12.4 - 13.1 mi

Top 13%
×2story building
+19ft-37ft

Overall

3497

Females

189

F40-44

189

Half→25K

13.1 - 15.5 mi

Top 10%
×4story building
+66ft-88ft

Overall

2647

Females

112

F40-44

112

25K→30K

15.5 - 18.6 mi

Top 7%
×9story building
+181ft-148ft

Overall

1920

Females

82

F40-44

82

30K→20M

18.6 - 20.0 mi

Top 9%
×5story building
+64ft-50ft

Overall

2338

Females

117

F40-44

117

20M→21M

20.0 - 21.0 mi

Top 8%
×8story building
+106ft-24ft

Overall

2034

Females

108

F40-44

108

21M→35K

21.0 - 21.8 mi

Top 7%
×7story building
+17ft-86ft

Overall

1799

Females

90

F40-44

90

35K→23M

21.8 - 23.0 mi

Top 7%
×5story building
+23ft-63ft

Overall

1799

Females

94

F40-44

94

23M→24M

23.0 - 24.0 mi

Top 6%
×6story building
+12ft-82ft

Overall

1702

Females

94

F40-44

94

24M→40K

24.0 - 24.9 mi

Top 7%
×1story
+6ft-20ft

Overall

1903

Females

110

F40-44

110

40K→25.2M

24.9 - 25.2 mi

Top 6%
×1story
+13ft-16ft

Overall

1693

Females

103

F40-44

103

25.2M→Finish

25.2 - 26.2 mi

Top 5%
×2story building
+22ft-21ft

Overall

1243

Females

64

F40-44

64

Passing Analysis

Category:
Athletes Passed
2415
Passed By
214
Net Change
+2201
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4663
5K → 10K40483+321#4663#4342
10K → 15K22158+163#4342#4179
15K → 20K4022+400#4179#3779
20K → Half2515+10#3779#3769
Half → 25K2512+249#3769#3520
25K → 30K4190+419#3520#3101
30K → 20M935+88#3101#3013
20M → 21M939+84#3013#2929
21M → 35K795+74#2929#2855
35K → 23M1218+113#2855#2742
23M → 24M1085+103#2742#2639
24M → 40K6014+46#2639#2593
40K → 25.2M364+32#2593#2561
25.2M → Finish1034+99#2561#2462
TOTALS2415214+2201
📊

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