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BOSTON MARATHON 2023

Madi Clark

Bib: 12310•F

CO

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
7:51/mi
24:23
↑ 97↓ 3451.5%
10K· 6.21 mi
7:52/mi
48:50
↑ 79↓ 1380.4%
15K· 9.32 mi
7:57/mi
1:13:32
↑ 67↓ 78
20K· 12.43 mi
8:08/mi
1:38:49
↑ 106↓ 860.1%
Half· 13.11 mi
8:02/mi
1:44:18
↑ 19↓ 370.5%
25K· 15.53 mi
8:13/mi
2:04:13
↑ 66↓ 880.2%
30K· 18.64 mi
8:28/mi
2:30:30
↑ 181↓ 1480.2%
20M
8:36/mi
2:42:11
↑ 64↓ 500.2%
21M
9:19/mi
2:51:30
↑ 106↓ 241.6%
35K· 21.75 mi
8:41/mi
2:58:00
↑ 17↓ 861.7%
23M
9:12/mi
3:09:31
↑ 23↓ 630.6%
24M
9:18/mi
3:18:49
↓ 821.3%
40K· 24.85 mi
9:25/mi
3:26:52
↓ 200.3%
25.2M
9:46/mi
3:30:14
↑ 13↓ 160.2%
Finish· 26.22 mi
8:59/mi
3:39:23
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:44:18
Pace7:57 /mi
2nd Half
Distance13.11 mi
Time1:55:05
Pace8:47 /mi
📊Positive Split: 10.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:52:0324:237:5124:23
7:51
-
10K
6.21 mi11:16:3048:507:5224:27
7:52
+0:01
15K
9.32 mi11:41:121:13:327:5324:42
7:57
+0:05
20K
12.43 mi12:06:291:38:497:5725:17
8:08
+0:11
Half
13.11 mi12:11:581:44:187:575:29
8:02
-0:06
25K
15.53 mi12:31:532:04:138:0019:55
8:13
+0:11
30K
18.64 mi12:58:102:30:308:0426:17
8:28
+0:15
20M
20.00 mi13:09:512:42:118:0711:41
8:36
+0:08
21M
21.00 mi13:19:102:51:308:109:19
9:19
+0:43
35K
21.75 mi13:25:402:58:008:116:30
8:41
-0:38
23M
23.00 mi13:37:113:09:318:1411:31
9:12
+0:31
24M
24.00 mi13:46:293:18:498:179:18
9:18
+0:06
40K
24.85 mi13:54:323:26:528:198:03
9:25
+0:07
25.2M
25.20 mi13:57:543:30:148:213:22
9:46
+0:21
Finish
26.22 mi14:07:033:39:238:229:09
8:59
-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

7:51 /mi

Average Pace

8:22 /mi

Slowest Pace

9:46 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:04:13

57% of race

Time at Steady Pace

44:28

20% of race

Time at Slower Pace

50:42

23% 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 mi10:52:0324:237:5124:23
7:51
#12847
10K
6.21 mi11:16:3048:507:5224:27
7:52
#13274
15K
9.32 mi11:41:121:13:327:5324:42
7:57
#13496
20K
12.43 mi12:06:291:38:497:5725:17
8:08
#13715
Half
13.11 mi12:11:581:44:187:575:29
8:02
#13757
25K
15.53 mi12:31:532:04:138:0019:55
8:13
#13846
30K
18.64 mi12:58:102:30:308:0426:17
8:28
#13878
20M
20.00 mi13:09:512:42:118:0711:41
8:36
#13908
21M
21.00 mi13:19:102:51:308:109:19
9:19
#13964
35K
21.75 mi13:25:402:58:008:116:30
8:41
#14050
23M
23.00 mi13:37:113:09:318:1411:31
9:12
#14252
24M
24.00 mi13:46:293:18:498:179:18
9:18
#14471
40K
24.85 mi13:54:323:26:528:198:03
9:25
#14622
25.2M
25.20 mi13:57:543:30:148:213:22
9:46
#14640
Finish
26.22 mi14:07:033:39:238:229:09
8:59
#14778
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi128473353335314017(Top 53%)4100(Top 36%)4100(Top 84%)
10K6.21 mi3.10 mi13274-4273611-2583611-25813740(Top 52%)3887(Top 34%)3887(Top 80%)
15K9.32 mi3.11 mi13496-2223747-1363747-13614017(Top 53%)4100(Top 36%)4100(Top 84%)
20K12.43 mi3.11 mi13715-2193918-1713918-17114522(Top 55%)4421(Top 39%)4421(Top 91%)
Half13.11 mi0.68 mi13757-423934-163934-1614731(Top 55%)4527(Top 40%)4527(Top 93%)
25K15.53 mi2.42 mi13846-894021-874021-8714356(Top 54%)4427(Top 39%)4427(Top 91%)
30K18.64 mi3.11 mi13878-324067-464067-4614061(Top 53%)4369(Top 38%)4369(Top 89%)
20M20.00 mi1.36 mi13908-304105-384105-3814271(Top 54%)4583(Top 40%)4583(Top 94%)
21M21.00 mi1.00 mi13964-564163-584163-5815090(Top 57%)5107(Top 45%)5107(Top 105%)
35K21.75 mi0.75 mi14050-864231-684231-6816355(Top 61%)5904(Top 52%)5904(Top 121%)
23M23.00 mi1.25 mi14252-2024383-1524383-15217052(Top 64%)6314(Top 55%)6314(Top 129%)
24M24.00 mi1.00 mi14471-2194536-1534536-15318457(Top 69%)7134(Top 62%)7134(Top 146%)
40K24.85 mi0.85 mi14622-1514654-1184654-11818026(Top 68%)6955(Top 61%)6955(Top 142%)
25.2M25.20 mi0.35 mi14640-184680-264680-2616392(Top 62%)6086(Top 53%)6086(Top 125%)
Finish26.22 mi1.02 mi14778-1384776-964776-9617879(Top 67%)6841(Top 60%)6841(Top 140%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 53%
×21story building
+97ft-345ft

Overall

14017

Females

4100

F18-39

4100

5K→10K

3.1 - 6.2 mi

Top 52%
×5story building
+79ft-138ft

Overall

13740

Females

3887

F18-39

3887

10K→15K

6.2 - 9.3 mi

Top 53%
×3story building
+67ft-78ft

Overall

14017

Females

4100

F18-39

4100

15K→20K

9.3 - 12.4 mi

Top 55%
×5story building
+106ft-86ft

Overall

14522

Females

4421

F18-39

4421

20K→Half

12.4 - 13.1 mi

Top 55%
×2story building
+19ft-37ft

Overall

14731

Females

4527

F18-39

4527

Half→25K

13.1 - 15.5 mi

Top 54%
×4story building
+66ft-88ft

Overall

14356

Females

4427

F18-39

4427

25K→30K

15.5 - 18.6 mi

Top 53%
×9story building
+181ft-148ft

Overall

14061

Females

4369

F18-39

4369

30K→20M

18.6 - 20.0 mi

Top 54%
×5story building
+64ft-50ft

Overall

14271

Females

4583

F18-39

4583

20M→21M

20.0 - 21.0 mi

Top 57%
×8story building
+106ft-24ft

Overall

15090

Females

5107

F18-39

5107

21M→35K

21.0 - 21.8 mi

Top 61%
×7story building
+17ft-86ft

Overall

16355

Females

5904

F18-39

5904

35K→23M

21.8 - 23.0 mi

Top 64%
×5story building
+23ft-63ft

Overall

17052

Females

6314

F18-39

6314

23M→24M

23.0 - 24.0 mi

Top 69%
×6story building
+12ft-82ft

Overall

18457

Females

7134

F18-39

7134

24M→40K

24.0 - 24.9 mi

Top 68%
×1story
+6ft-20ft

Overall

18026

Females

6955

F18-39

6955

40K→25.2M

24.9 - 25.2 mi

Top 62%
×1story
+13ft-16ft

Overall

16392

Females

6086

F18-39

6086

25.2M→Finish

25.2 - 26.2 mi

Top 67%
×2story building
+22ft-21ft

Overall

17879

Females

6841

F18-39

6841

Passing Analysis

Category:
Athletes Passed
1003
Passed By
2934
Net Change
-1931
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#12847
5K → 10K145572-427#12847#13274
10K → 15K122344-222#13274#13496
15K → 20K117336-219#13496#13715
20K → Half1860-42#13715#13757
Half → 25K104193-89#13757#13846
25K → 30K178210-32#13846#13878
30K → 20M86116-30#13878#13908
20M → 21M74130-56#13908#13964
21M → 35K27113-86#13964#14050
35K → 23M39241-202#14050#14252
23M → 24M27246-219#14252#14471
24M → 40K27178-151#14471#14622
40K → 25.2M2139-18#14622#14640
25.2M → Finish18156-138#14640#14778
TOTALS10032934-1931
📊

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