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BOSTON MARATHON 2023

Olivia Biron

Bib: 16558•F

MA

0:00
0:00
/ mi
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Top 38%
Division (F18-39)
#0 / 4884
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:57
Rank: #11543
Start → 5K
23:57 | 7:43/mi
10K· 6.21 mi
46:45
Rank: #10270 (+1273)
5K → 10K
22:48 | 7:20/mi
15K· 9.32 mi
1:10:02
Rank: #10191 (+79)
10K → 15K
23:17 | 7:30/mi
20K· 12.43 mi
1:33:38
Rank: #10144 (+47)
15K → 20K
23:36 | 7:36/mi
Half· 13.11 mi
1:38:49
Rank: #10182 (-38)
20K → Half
5:11 | 7:36/mi
25K· 15.53 mi
1:57:55
Rank: #10420 (-238)
Half → 25K
19:06 | 7:53/mi
30K· 18.64 mi
2:25:17
Rank: #11558 (-1138)
25K → 30K
27:22 | 8:49/mi
20M
2:37:32
Rank: #12022 (-464)
30K → 20M
12:15 | 9:01/mi
21M
2:46:50
Rank: #12220 (-198)
20M → 21M
9:18 | 9:18/mi
35K· 21.75 mi
2:53:04
Rank: #12298 (-78)
21M → 35K
6:14 | 8:20/mi
23M
3:05:05
Rank: #12820 (-522)
35K → 23M
12:01 | 9:36/mi
24M
3:13:54
Rank: #12976 (-156)
23M → 24M
8:49 | 8:49/mi
40K· 24.85 mi
3:23:35
Rank: #13698 (-722)
24M → 40K
9:41 | 11:20/mi
25.2M
3:27:02
Rank: #13780 (-82)
40K → 25.2M
3:27 | 10:00/mi
Finish· 26.22 mi
3:36:14
Rank: #13985 (-205)
25.2M → Finish
9:12 | 9:02/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:38:49
Pace7:32 /mi
2nd Half
Distance13.11 mi
Time1:57:25
Pace8:57 /mi
📊Positive Split: 18.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:15:0323:577:4323:57
7:43
-
10K
6.21 mi11:37:5146:457:3122:48
7:20
-0:23
15K
9.32 mi12:01:081:10:027:3123:17
7:30
+0:10
20K
12.43 mi12:24:441:33:387:3223:36
7:36
+0:06
Half
13.11 mi12:29:551:38:497:325:11
7:36
0:00
25K
15.53 mi12:49:011:57:557:3519:06
7:53
+0:17
30K
18.64 mi13:16:232:25:177:4827:22
8:49
+0:56
20M
20.00 mi13:28:382:37:327:5312:15
9:01
+0:12
21M
21.00 mi13:37:562:46:507:579:18
9:18
+0:17
35K
21.75 mi13:44:102:53:047:576:14
8:20
-0:58
23M
23.00 mi13:56:113:05:058:0312:01
9:36
+1:16
24M
24.00 mi14:05:003:13:548:058:49
8:49
-0:47
40K
24.85 mi14:14:413:23:358:119:41
11:20
+2:31
25.2M
25.20 mi14:18:083:27:028:133:27
10:00
-1:20
Finish
26.22 mi14:27:203:36:148:159:12
9:02
-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

7:20 /mi

Average Pace

8:15 /mi

Slowest Pace

11:20 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:57:55

55% of race

Time at Steady Pace

1:13:10

34% of race

Time at Slower Pace

25:09

12% of race

Average Pace: 8:15 /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 mi11:15:0323:577:4323:57
7:43
#11543
10K
6.21 mi11:37:5146:457:3122:48
7:20
#10270
15K
9.32 mi12:01:081:10:027:3123:17
7:30
#10191
20K
12.43 mi12:24:441:33:387:3223:36
7:36
#10144
Half
13.11 mi12:29:551:38:497:325:11
7:36
#10182
25K
15.53 mi12:49:011:57:557:3519:06
7:53
#10420
30K
18.64 mi13:16:232:25:177:4827:22
8:49
#11558
20M
20.00 mi13:28:382:37:327:5312:15
9:01
#12022
21M
21.00 mi13:37:562:46:507:579:18
9:18
#12220
35K
21.75 mi13:44:102:53:047:576:14
8:20
#12298
23M
23.00 mi13:56:113:05:058:0312:01
9:36
#12820
24M
24.00 mi14:05:003:13:548:058:49
8:49
#12976
40K
24.85 mi14:14:413:23:358:119:41
11:20
#13698
25.2M
25.20 mi14:18:083:27:028:133:27
10:00
#13780
Finish
26.22 mi14:27:203:36:148:159:12
9:02
#13985
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi115432616261610149(Top 38%)1915(Top 17%)1915(Top 39%)
10K6.21 mi3.10 mi10270+12731964+6521964+6529166(Top 34%)1483(Top 13%)1483(Top 30%)
15K9.32 mi3.11 mi10191+791907+571907+5710149(Top 38%)1915(Top 17%)1915(Top 39%)
20K12.43 mi3.11 mi10144+471898+91898+910087(Top 38%)1960(Top 17%)1960(Top 40%)
Half13.11 mi0.68 mi10182-381927-291927-2911102(Top 42%)2444(Top 21%)2444(Top 50%)
25K15.53 mi2.42 mi10420-2382057-1302057-13011772(Top 44%)2946(Top 26%)2946(Top 60%)
30K18.64 mi3.11 mi11558-11382723-6662723-66616125(Top 61%)5564(Top 49%)5564(Top 114%)
20M20.00 mi1.36 mi12022-4643016-2933016-29316622(Top 62%)5924(Top 52%)5924(Top 121%)
21M21.00 mi1.00 mi12220-1983137-1213137-12114990(Top 56%)5044(Top 44%)5044(Top 103%)
35K21.75 mi0.75 mi12298-783193-563193-5614309(Top 54%)4726(Top 41%)4726(Top 97%)
23M23.00 mi1.25 mi12820-5223521-3283521-32818723(Top 70%)7246(Top 63%)7246(Top 148%)
24M24.00 mi1.00 mi12976-1563635-1143635-11416297(Top 61%)5960(Top 52%)5960(Top 122%)
40K24.85 mi0.85 mi13698-7224083-4484083-44822930(Top 86%)9624(Top 84%)9624(Top 197%)
25.2M25.20 mi0.35 mi13780-824143-604143-6017404(Top 65%)6637(Top 58%)6637(Top 136%)
Finish26.22 mi1.02 mi13985-2054286-1434286-14318116(Top 68%)6954(Top 61%)6954(Top 142%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 38%
×21stories
+97ft-345ft

Overall

10149

Females

1915

F18-39

1915

5K→10K

3.1 - 6.2 mi

Top 34%
×5stories
+79ft-138ft

Overall

9166

Females

1483

F18-39

1483

10K→15K

6.2 - 9.3 mi

Top 38%
×3stories
+67ft-78ft

Overall

10149

Females

1915

F18-39

1915

15K→20K

9.3 - 12.4 mi

Top 38%
×5stories
+106ft-86ft

Overall

10087

Females

1960

F18-39

1960

20K→Half

12.4 - 13.1 mi

Top 42%
×2stories
+19ft-37ft

Overall

11102

Females

2444

F18-39

2444

Half→25K

13.1 - 15.5 mi

Top 44%
×4stories
+66ft-88ft

Overall

11772

Females

2946

F18-39

2946

25K→30K

15.5 - 18.6 mi

Top 61%
×9stories
+181ft-148ft

Overall

16125

Females

5564

F18-39

5564

30K→20M

18.6 - 20.0 mi

Top 62%
×5stories
+64ft-50ft

Overall

16622

Females

5924

F18-39

5924

20M→21M

20.0 - 21.0 mi

Top 56%
×8stories
+106ft-24ft

Overall

14990

Females

5044

F18-39

5044

21M→35K

21.0 - 21.8 mi

Top 54%
×7stories
+17ft-86ft

Overall

14309

Females

4726

F18-39

4726

35K→23M

21.8 - 23.0 mi

Top 70%
×5stories
+23ft-63ft

Overall

18723

Females

7246

F18-39

7246

23M→24M

23.0 - 24.0 mi

Top 61%
×6stories
+12ft-82ft

Overall

16297

Females

5960

F18-39

5960

24M→40K

24.0 - 24.9 mi

Top 86%
×1story
+6ft-20ft

Overall

22930

Females

9624

F18-39

9624

40K→25.2M

24.9 - 25.2 mi

Top 65%
×1story
+13ft-16ft

Overall

17404

Females

6637

F18-39

6637

25.2M→Finish

25.2 - 26.2 mi

Top 68%
×2stories
+22ft-21ft

Overall

18116

Females

6954

F18-39

6954

Passing Analysis

Category:
Athletes Passed
1977*
Passed By
4419
Net Change
-2442
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11543
5K → 10K1299*26+1273#11543#10270
10K → 15K221142+79#10270#10191
15K → 20K179*132+47#10191#10144
20K → Half1856-38#10144#10182
Half → 25K74312-238#10182#10420
25K → 30K261164-1138#10420#11558
30K → 20M22486-464#11558#12022
20M → 21M37235-198#12022#12220
21M → 35K24102-78#12220#12298
35K → 23M13535-522#12298#12820
23M → 24M29185-156#12820#12976
24M → 40K3725-722#12976#13698
40K → 25.2M1496-82#13698#13780
25.2M → Finish18223-205#13780#13985
TOTALS1977*4419-2442

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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