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BOSTON MARATHON 2023

Mary Baxter Reid

Bib: 13517•F

IL

0:00
0:00
/ mi
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Top 41%
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
8:21/mi
25:55
↑ 97↓ 3451.5%
10K· 6.21 mi
8:15/mi
51:33
↑ 79↓ 1380.4%
15K· 9.32 mi
8:14/mi
1:17:07
↑ 67↓ 78
20K· 12.43 mi
8:12/mi
1:42:37
↑ 106↓ 860.1%
Half· 13.11 mi
8:14/mi
1:48:14
↑ 19↓ 370.5%
25K· 15.53 mi
8:25/mi
2:08:38
↑ 66↓ 880.2%
30K· 18.64 mi
8:33/mi
2:35:11
↑ 181↓ 1480.2%
20M
8:28/mi
2:46:41
↑ 64↓ 500.2%
21M
8:50/mi
2:55:31
↑ 106↓ 241.6%
35K· 21.75 mi
8:16/mi
3:01:42
↑ 17↓ 861.7%
23M
8:24/mi
3:12:13
↑ 23↓ 630.6%
24M
8:16/mi
3:20:29
↓ 821.3%
40K· 24.85 mi
8:21/mi
3:27:37
↓ 200.3%
25.2M
8:45/mi
3:30:38
↑ 13↓ 160.2%
Finish· 26.22 mi
7:49/mi
3:38:36
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:48:14
Pace8:15 /mi
2nd Half
Distance13.11 mi
Time1:50:22
Pace8:25 /mi
📊Positive Split: 2.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:54:4425:558:2125:55
8:21
-
10K
6.21 mi11:20:2251:338:1825:38
8:15
-0:06
15K
9.32 mi11:45:561:17:078:1625:34
8:14
-0:01
20K
12.43 mi12:11:261:42:378:1525:30
8:12
-0:02
Half
13.11 mi12:17:031:48:148:155:37
8:14
+0:02
25K
15.53 mi12:37:272:08:388:1720:24
8:25
+0:11
30K
18.64 mi13:04:002:35:118:1926:33
8:33
+0:08
20M
20.00 mi13:15:302:46:418:2011:30
8:28
-0:05
21M
21.00 mi13:24:202:55:318:218:50
8:50
+0:22
35K
21.75 mi13:30:313:01:428:216:11
8:16
-0:34
23M
23.00 mi13:41:023:12:138:2110:31
8:24
+0:08
24M
24.00 mi13:49:183:20:298:218:16
8:16
-0:08
40K
24.85 mi13:56:263:27:378:217:08
8:21
+0:05
25.2M
25.20 mi13:59:273:30:388:223:01
8:45
+0:24
Finish
26.22 mi14:07:253:38:368:217:58
7:49
-0:56

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

7:49 /mi

Average Pace

8:21 /mi

Slowest Pace

8:50 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:26:45

95% of race

Time at Steady Pace

11:51

5% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:20 /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 mi10:54:4425:558:2125:55
8:21
#16442
10K
6.21 mi11:20:2251:338:1825:38
8:15
#16475
15K
9.32 mi11:45:561:17:078:1625:34
8:14
#16324
20K
12.43 mi12:11:261:42:378:1525:30
8:12
#15965
Half
13.11 mi12:17:031:48:148:155:37
8:14
#15959
25K
15.53 mi12:37:272:08:388:1720:24
8:25
#15911
30K
18.64 mi13:04:002:35:118:1926:33
8:33
#15641
20M
20.00 mi13:15:302:46:418:2011:30
8:28
#15462
21M
21.00 mi13:24:202:55:318:218:50
8:50
#15257
35K
21.75 mi13:30:313:01:428:216:11
8:16
#15187
23M
23.00 mi13:41:023:12:138:2110:31
8:24
#15031
24M
24.00 mi13:49:183:20:298:218:16
8:16
#14923
40K
24.85 mi13:56:263:27:378:217:08
8:21
#14805
25.2M
25.20 mi13:59:273:30:388:223:01
8:45
#14736
Finish
26.22 mi14:07:253:38:368:217:58
7:49
#14593
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi164425562556216075(Top 60%)5334(Top 47%)5334(Top 109%)
10K6.21 mi3.10 mi16475-335565-35565-316593(Top 62%)5632(Top 49%)5632(Top 115%)
15K9.32 mi3.11 mi16324+1515482+835482+8316075(Top 60%)5334(Top 47%)5334(Top 109%)
20K12.43 mi3.11 mi15965+3595285+1975285+19715020(Top 56%)4729(Top 41%)4729(Top 97%)
Half13.11 mi0.68 mi15959+65282+35282+316027(Top 60%)5295(Top 46%)5295(Top 108%)
25K15.53 mi2.42 mi15911+485278+45278+415674(Top 59%)5248(Top 46%)5248(Top 107%)
30K18.64 mi3.11 mi15641+2705146+1325146+13214584(Top 55%)4682(Top 41%)4682(Top 96%)
20M20.00 mi1.36 mi15462+1795067+795067+7913442(Top 50%)4102(Top 36%)4102(Top 84%)
21M21.00 mi1.00 mi15257+2054967+1004967+10012481(Top 47%)3680(Top 32%)3680(Top 75%)
35K21.75 mi0.75 mi15187+704939+284939+2813940(Top 52%)4531(Top 40%)4531(Top 93%)
23M23.00 mi1.25 mi15031+1564860+794860+7912609(Top 47%)3860(Top 34%)3860(Top 79%)
24M24.00 mi1.00 mi14923+1084808+524808+5213097(Top 49%)4186(Top 37%)4186(Top 86%)
40K24.85 mi0.85 mi14805+1184763+454763+4512379(Top 46%)3879(Top 34%)3879(Top 79%)
25.2M25.20 mi0.35 mi14736+694733+304733+3011136(Top 42%)3294(Top 29%)3294(Top 67%)
Finish26.22 mi1.02 mi14593+1434655+784655+7810858(Top 41%)3132(Top 27%)3132(Top 64%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 60%
×21story building
+97ft-345ft

Overall

16075

Females

5334

F18-39

5334

5K→10K

3.1 - 6.2 mi

Top 62%
×5story building
+79ft-138ft

Overall

16593

Females

5632

F18-39

5632

10K→15K

6.2 - 9.3 mi

Top 60%
×3story building
+67ft-78ft

Overall

16075

Females

5334

F18-39

5334

15K→20K

9.3 - 12.4 mi

Top 56%
×5story building
+106ft-86ft

Overall

15020

Females

4729

F18-39

4729

20K→Half

12.4 - 13.1 mi

Top 60%
×2story building
+19ft-37ft

Overall

16027

Females

5295

F18-39

5295

Half→25K

13.1 - 15.5 mi

Top 59%
×4story building
+66ft-88ft

Overall

15674

Females

5248

F18-39

5248

25K→30K

15.5 - 18.6 mi

Top 55%
×9story building
+181ft-148ft

Overall

14584

Females

4682

F18-39

4682

30K→20M

18.6 - 20.0 mi

Top 50%
×5story building
+64ft-50ft

Overall

13442

Females

4102

F18-39

4102

20M→21M

20.0 - 21.0 mi

Top 47%
×8story building
+106ft-24ft

Overall

12481

Females

3680

F18-39

3680

21M→35K

21.0 - 21.8 mi

Top 52%
×7story building
+17ft-86ft

Overall

13940

Females

4531

F18-39

4531

35K→23M

21.8 - 23.0 mi

Top 47%
×5story building
+23ft-63ft

Overall

12609

Females

3860

F18-39

3860

23M→24M

23.0 - 24.0 mi

Top 49%
×6story building
+12ft-82ft

Overall

13097

Females

4186

F18-39

4186

24M→40K

24.0 - 24.9 mi

Top 46%
×1story
+6ft-20ft

Overall

12379

Females

3879

F18-39

3879

40K→25.2M

24.9 - 25.2 mi

Top 42%
×1story
+13ft-16ft

Overall

11136

Females

3294

F18-39

3294

25.2M→Finish

25.2 - 26.2 mi

Top 41%
×2story building
+22ft-21ft

Overall

10858

Females

3132

F18-39

3132

Passing Analysis

Category:
Athletes Passed
2583
Passed By
734
Net Change
+1849
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#16442
5K → 10K279312-33#16442#16475
10K → 15K269118+151#16475#16324
15K → 20K39637+359#16324#15965
20K → Half3024+6#15965#15959
Half → 25K161113+48#15959#15911
25K → 30K32353+270#15911#15641
30K → 20M19011+179#15641#15462
20M → 21M2116+205#15462#15257
21M → 35K8313+70#15257#15187
35K → 23M16610+156#15187#15031
23M → 24M12113+108#15031#14923
24M → 40K13214+118#14923#14805
40K → 25.2M712+69#14805#14736
25.2M → Finish1518+143#14736#14593
TOTALS2583734+1849
📊

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