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BOSTON MARATHON 2023

Clara Heiden

Bib: 5672•F

MA

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 22%
Gender (Female)
#0 / 11423
Top 5%
Division (F18-39)
#0 / 4884
Top 10%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:39
Rank: #6075
Start → 5K
21:39 | 6:58/mi
10K· 6.21 mi
43:22
Rank: #6382 (-307)
5K → 10K
21:43 | 6:59/mi
15K· 9.32 mi
1:05:10
Rank: #6464 (-82)
10K → 15K
21:48 | 7:01/mi
20K· 12.43 mi
1:26:55
Rank: #6321 (+143)
15K → 20K
21:45 | 7:00/mi
Half· 13.11 mi
1:31:38
Rank: #6306 (+15)
20K → Half
4:43 | 6:55/mi
25K· 15.53 mi
1:48:37
Rank: #6174 (+132)
Half → 25K
16:59 | 7:00/mi
30K· 18.64 mi
2:10:29
Rank: #5816 (+358)
25K → 30K
21:52 | 7:02/mi
20M
2:20:17
Rank: #5732 (+84)
30K → 20M
9:48 | 7:13/mi
21M
2:28:15
Rank: #5762 (-30)
20M → 21M
7:58 | 7:58/mi
35K· 21.75 mi
2:33:36
Rank: #5766 (-4)
21M → 35K
5:21 | 7:09/mi
23M
2:43:05
Rank: #5765 (+1)
35K → 23M
9:29 | 7:34/mi
24M
2:50:33
Rank: #5779 (-14)
23M → 24M
7:28 | 7:28/mi
40K· 24.85 mi
2:57:07
Rank: #5793 (-14)
24M → 40K
6:34 | 7:41/mi
25.2M
3:00:01
Rank: #5817 (-24)
40K → 25.2M
2:54 | 8:25/mi
Finish· 26.22 mi
3:07:37
Rank: #5849 (-32)
25.2M → Finish
7:36 | 7:27/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:31:38
Pace6:59 /mi
2nd Half
Distance13.11 mi
Time1:35:59
Pace7:19 /mi
📊Positive Split: 4.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:47:1621:396:5821:39
6:58
-
10K
6.21 mi11:08:5943:226:5921:43
6:59
+0:01
15K
9.32 mi11:30:471:05:107:0021:48
7:01
+0:02
20K
12.43 mi11:52:321:26:557:0021:45
7:00
-0:01
Half
13.11 mi11:57:151:31:386:594:43
6:55
-0:05
25K
15.53 mi12:14:141:48:377:0016:59
7:00
+0:05
30K
18.64 mi12:36:062:10:297:0021:52
7:02
+0:02
20M
20.00 mi12:45:542:20:177:019:48
7:13
+0:11
21M
21.00 mi12:53:522:28:157:047:58
7:58
+0:45
35K
21.75 mi12:59:132:33:367:045:21
7:09
-0:49
23M
23.00 mi13:08:422:43:057:059:29
7:34
+0:25
24M
24.00 mi13:16:102:50:337:067:28
7:28
-0:06
40K
24.85 mi13:22:442:57:077:086:34
7:41
+0:13
25.2M
25.20 mi13:25:383:00:017:092:54
8:25
+0:44
Finish
26.22 mi13:33:143:07:377:107:36
7:27
-0:58

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

6:55 /mi

Average Pace

7:10 /mi

Slowest Pace

8:25 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

4:43

3% of race

Time at Steady Pace

2:20:55

75% of race

Time at Slower Pace

41:59

22% of race

Average Pace: 7:09 /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 mi10:47:1621:396:5821:39
6:58
#6075
10K
6.21 mi11:08:5943:226:5921:43
6:59
#6382
15K
9.32 mi11:30:471:05:107:0021:48
7:01
#6464
20K
12.43 mi11:52:321:26:557:0021:45
7:00
#6321
Half
13.11 mi11:57:151:31:386:594:43
6:55
#6306
25K
15.53 mi12:14:141:48:377:0016:59
7:00
#6174
30K
18.64 mi12:36:062:10:297:0021:52
7:02
#5816
20M
20.00 mi12:45:542:20:177:019:48
7:13
#5732
21M
21.00 mi12:53:522:28:157:047:58
7:58
#5762
35K
21.75 mi12:59:132:33:367:045:21
7:09
#5766
23M
23.00 mi13:08:422:43:057:059:29
7:34
#5765
24M
24.00 mi13:16:102:50:337:067:28
7:28
#5779
40K
24.85 mi13:22:442:57:077:086:34
7:41
#5793
25.2M
25.20 mi13:25:383:00:017:092:54
8:25
#5817
Finish
26.22 mi13:33:143:07:377:107:36
7:27
#5849
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi60755205206675(Top 25%)673(Top 6%)673(Top 14%)
10K6.21 mi3.10 mi6382-307596-76596-766768(Top 25%)692(Top 6%)692(Top 14%)
15K9.32 mi3.11 mi6464-82618-22618-226675(Top 25%)673(Top 6%)673(Top 14%)
20K12.43 mi3.11 mi6321+143591+27591+276003(Top 23%)524(Top 5%)524(Top 11%)
Half13.11 mi0.68 mi6306+15587+4587+46123(Top 23%)540(Top 5%)540(Top 11%)
25K15.53 mi2.42 mi6174+132558+29558+295622(Top 21%)462(Top 4%)462(Top 9%)
30K18.64 mi3.11 mi5816+358487+71487+714611(Top 17%)344(Top 3%)344(Top 7%)
20M20.00 mi1.36 mi5732+84479+8479+85191(Top 19%)499(Top 4%)499(Top 10%)
21M21.00 mi1.00 mi5762-30494-15494-157157(Top 27%)1182(Top 10%)1182(Top 24%)
35K21.75 mi0.75 mi5766-4501-7501-76244(Top 23%)825(Top 7%)825(Top 17%)
23M23.00 mi1.25 mi5765+1523-22523-226921(Top 26%)1133(Top 10%)1133(Top 23%)
24M24.00 mi1.00 mi5779-14532-9532-97488(Top 28%)1471(Top 13%)1471(Top 30%)
40K24.85 mi0.85 mi5793-14547-15547-157855(Top 30%)1685(Top 15%)1685(Top 35%)
25.2M25.20 mi0.35 mi5817-24557-10557-108993(Top 34%)2219(Top 19%)2219(Top 45%)
Finish26.22 mi1.02 mi5849-32576-19576-198252(Top 31%)1927(Top 17%)1927(Top 39%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 25%
×21stories
+97ft-345ft

Overall

6675

Females

673

F18-39

673

5K→10K

3.1 - 6.2 mi

Top 25%
×5stories
+79ft-138ft

Overall

6768

Females

692

F18-39

692

10K→15K

6.2 - 9.3 mi

Top 25%
×3stories
+67ft-78ft

Overall

6675

Females

673

F18-39

673

15K→20K

9.3 - 12.4 mi

Top 23%
×5stories
+106ft-86ft

Overall

6003

Females

524

F18-39

524

20K→Half

12.4 - 13.1 mi

Top 23%
×2stories
+19ft-37ft

Overall

6123

Females

540

F18-39

540

Half→25K

13.1 - 15.5 mi

Top 21%
×4stories
+66ft-88ft

Overall

5622

Females

462

F18-39

462

25K→30K

15.5 - 18.6 mi

Top 17%
×9stories
+181ft-148ft

Overall

4611

Females

344

F18-39

344

30K→20M

18.6 - 20.0 mi

Top 19%
×5stories
+64ft-50ft

Overall

5191

Females

499

F18-39

499

20M→21M

20.0 - 21.0 mi

Top 27%
×8stories
+106ft-24ft

Overall

7157

Females

1182

F18-39

1182

21M→35K

21.0 - 21.8 mi

Top 23%
×7stories
+17ft-86ft

Overall

6244

Females

825

F18-39

825

35K→23M

21.8 - 23.0 mi

Top 26%
×5stories
+23ft-63ft

Overall

6921

Females

1133

F18-39

1133

23M→24M

23.0 - 24.0 mi

Top 28%
×6stories
+12ft-82ft

Overall

7488

Females

1471

F18-39

1471

24M→40K

24.0 - 24.9 mi

Top 30%
×1story
+6ft-20ft

Overall

7855

Females

1685

F18-39

1685

40K→25.2M

24.9 - 25.2 mi

Top 34%
×1story
+13ft-16ft

Overall

8993

Females

2219

F18-39

2219

25.2M→Finish

25.2 - 26.2 mi

Top 31%
×2stories
+22ft-21ft

Overall

8252

Females

1927

F18-39

1927

Passing Analysis

Category:
Athletes Passed
1266
Passed By
1040
Net Change
+226
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#6075
5K → 10K67374-307#6075#6382
10K → 15K85167-82#6382#6464
15K → 20K17835+143#6464#6321
20K → Half238+15#6321#6306
Half → 25K15119+132#6306#6174
25K → 30K3646+358#6174#5816
30K → 20M10723+84#5816#5732
20M → 21M4676-30#5732#5762
21M → 35K2933-4#5762#5766
35K → 23M6867+1#5766#5765
23M → 24M4761-14#5765#5779
24M → 40K4054-14#5779#5793
40K → 25.2M1236-24#5793#5817
25.2M → Finish4981-32#5817#5849
TOTALS12661040+226
📊

Passing Visuals

Category:
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🔥Passing Intensity

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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