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BOSTON MARATHON 2023

Meghan Brennan

Bib: 17970•F

KY

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 32%
Gender (Female)
#0 / 11423
Top 12%
Division (F18-39)
#0 / 4884
Top 23%
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
7:40/mi
23:48
↑ 97↓ 3451.5%
10K· 6.21 mi
7:34/mi
47:18
↑ 79↓ 1380.4%
15K· 9.32 mi
7:30/mi
1:10:35
↑ 67↓ 78
20K· 12.43 mi
7:34/mi
1:34:07
↑ 106↓ 860.1%
Half· 13.11 mi
7:31/mi
1:39:15
↑ 19↓ 370.5%
25K· 15.53 mi
7:30/mi
1:57:25
↑ 66↓ 880.2%
30K· 18.64 mi
7:33/mi
2:20:52
↑ 181↓ 1480.2%
20M
7:32/mi
2:31:06
↑ 64↓ 500.2%
21M
7:49/mi
2:38:55
↑ 106↓ 241.6%
35K· 21.75 mi
7:09/mi
2:44:16
↑ 17↓ 861.7%
23M
7:38/mi
2:53:50
↑ 23↓ 630.6%
24M
7:19/mi
3:01:09
↓ 821.3%
40K· 24.85 mi
7:26/mi
3:07:30
↓ 200.3%
25.2M
7:50/mi
3:10:12
↑ 13↓ 160.2%
Finish· 26.22 mi
7:02/mi
3:17:22
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:39:15
Pace7:34 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:38:07
Pace7:29 /mi
📊Negative Split: 1.1% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:14:3323:487:4023:48
7:40
-
10K
6.21 mi11:38:0347:187:3723:30
7:34
-0:06
15K
9.32 mi12:01:201:10:357:3423:17
7:30
-0:04
20K
12.43 mi12:24:521:34:077:3423:32
7:34
+0:04
Half
13.11 mi12:30:001:39:157:345:08
7:31
-0:03
25K
15.53 mi12:48:101:57:257:3418:10
7:30
-0:01
30K
18.64 mi13:11:372:20:527:3323:27
7:33
+0:03
20M
20.00 mi13:21:512:31:067:3310:14
7:32
-0:01
21M
21.00 mi13:29:402:38:557:347:49
7:49
+0:17
35K
21.75 mi13:35:012:44:167:335:21
7:09
-0:40
23M
23.00 mi13:44:352:53:507:339:34
7:38
+0:29
24M
24.00 mi13:51:543:01:097:337:19
7:19
-0:19
40K
24.85 mi13:58:153:07:307:336:21
7:26
+0:07
25.2M
25.20 mi14:00:573:10:127:332:42
7:50
+0:24
Finish
26.22 mi14:08:073:17:227:327:10
7:02
-0:48

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

7:02 /mi

Average Pace

7:32 /mi

Slowest Pace

7:50 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:06:51

95% of race

Time at Steady Pace

10:31

5% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:32 /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 mi11:14:3323:487:4023:48
7:40
#11113
10K
6.21 mi11:38:0347:187:3723:30
7:34
#11017
15K
9.32 mi12:01:201:10:357:3423:17
7:30
#10694
20K
12.43 mi12:24:521:34:077:3423:32
7:34
#10462
Half
13.11 mi12:30:001:39:157:345:08
7:31
#10467
25K
15.53 mi12:48:101:57:257:3418:10
7:30
#10125
30K
18.64 mi13:11:372:20:527:3323:27
7:33
#9638
20M
20.00 mi13:21:512:31:067:3310:14
7:32
#9404
21M
21.00 mi13:29:402:38:557:347:49
7:49
#9159
35K
21.75 mi13:35:012:44:167:335:21
7:09
#9043
23M
23.00 mi13:44:352:53:507:339:34
7:38
#8910
24M
24.00 mi13:51:543:01:097:337:19
7:19
#8778
40K
24.85 mi13:58:153:07:307:336:21
7:26
#8650
25.2M
25.20 mi14:00:573:10:127:332:42
7:50
#8596
Finish
26.22 mi14:08:073:17:227:327:10
7:02
#8420
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi111132386238610135(Top 38%)1901(Top 17%)1901(Top 39%)
10K6.21 mi3.10 mi11017+962334+522334+5210996(Top 41%)2300(Top 20%)2300(Top 47%)
15K9.32 mi3.11 mi10694+3232166+1682166+16810135(Top 38%)1901(Top 17%)1901(Top 39%)
20K12.43 mi3.11 mi10462+2322050+1162050+1169910(Top 37%)1869(Top 16%)1869(Top 38%)
Half13.11 mi0.68 mi10467-52053-32053-310427(Top 39%)2082(Top 18%)2082(Top 43%)
25K15.53 mi2.42 mi10125+3421913+1401913+1408752(Top 33%)1453(Top 13%)1453(Top 30%)
30K18.64 mi3.11 mi9638+4871733+1801733+1807577(Top 28%)1136(Top 10%)1136(Top 23%)
20M20.00 mi1.36 mi9404+2341671+621671+627029(Top 26%)1037(Top 9%)1037(Top 21%)
21M21.00 mi1.00 mi9159+2451603+681603+686292(Top 24%)884(Top 8%)884(Top 18%)
35K21.75 mi0.75 mi9043+1161558+451558+456282(Top 24%)863(Top 8%)863(Top 18%)
23M23.00 mi1.25 mi8910+1331534+241534+247389(Top 28%)1331(Top 12%)1331(Top 27%)
24M24.00 mi1.00 mi8778+1321505+291505+296525(Top 25%)1086(Top 10%)1086(Top 22%)
40K24.85 mi0.85 mi8650+1281467+381467+386285(Top 24%)1081(Top 9%)1081(Top 22%)
25.2M25.20 mi0.35 mi8596+541452+151452+155637(Top 21%)950(Top 8%)950(Top 19%)
Finish26.22 mi1.02 mi8420+1761414+381414+385440(Top 20%)887(Top 8%)887(Top 18%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 38%
×21story building
+97ft-345ft

Overall

10135

Females

1901

F18-39

1901

5K→10K

3.1 - 6.2 mi

Top 41%
×5story building
+79ft-138ft

Overall

10996

Females

2300

F18-39

2300

10K→15K

6.2 - 9.3 mi

Top 38%
×3story building
+67ft-78ft

Overall

10135

Females

1901

F18-39

1901

15K→20K

9.3 - 12.4 mi

Top 37%
×5story building
+106ft-86ft

Overall

9910

Females

1869

F18-39

1869

20K→Half

12.4 - 13.1 mi

Top 39%
×2story building
+19ft-37ft

Overall

10427

Females

2082

F18-39

2082

Half→25K

13.1 - 15.5 mi

Top 33%
×4story building
+66ft-88ft

Overall

8752

Females

1453

F18-39

1453

25K→30K

15.5 - 18.6 mi

Top 28%
×9story building
+181ft-148ft

Overall

7577

Females

1136

F18-39

1136

30K→20M

18.6 - 20.0 mi

Top 26%
×5story building
+64ft-50ft

Overall

7029

Females

1037

F18-39

1037

20M→21M

20.0 - 21.0 mi

Top 24%
×8story building
+106ft-24ft

Overall

6292

Females

884

F18-39

884

21M→35K

21.0 - 21.8 mi

Top 24%
×7story building
+17ft-86ft

Overall

6282

Females

863

F18-39

863

35K→23M

21.8 - 23.0 mi

Top 28%
×5story building
+23ft-63ft

Overall

7389

Females

1331

F18-39

1331

23M→24M

23.0 - 24.0 mi

Top 25%
×6story building
+12ft-82ft

Overall

6525

Females

1086

F18-39

1086

24M→40K

24.0 - 24.9 mi

Top 24%
×1story
+6ft-20ft

Overall

6285

Females

1081

F18-39

1081

40K→25.2M

24.9 - 25.2 mi

Top 21%
×1story
+13ft-16ft

Overall

5637

Females

950

F18-39

950

25.2M→Finish

25.2 - 26.2 mi

Top 20%
×2story building
+22ft-21ft

Overall

5440

Females

887

F18-39

887

Passing Analysis

Category:
Athletes Passed
3174*
Passed By
481
Net Change
+2693
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11113
5K → 10K346250+96#11113#11017
10K → 15K38158+323#11017#10694
15K → 20K28957+232#10694#10462
20K → Half3237-5#10462#10467
Half → 25K35513+342#10467#10125
25K → 30K494*7+487#10125#9638
30K → 20M2395+234#9638#9404
20M → 21M2505+245#9404#9159
21M → 35K1171+116#9159#9043
35K → 23M15219+133#9043#8910
23M → 24M1375+132#8910#8778
24M → 40K14012+128#8778#8650
40K → 25.2M573+54#8650#8596
25.2M → Finish1859+176#8596#8420
TOTALS3174*481+2693

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

📊

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