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BOSTON MARATHON 2023

Michelle Spencer

Bib: 12001•F

ON

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 34%
Gender (Female)
#0 / 11423
Top 14%
Masters (Masters Women)
#0 / 6539
Top 6%
Division (F40-44)
#0 / 1878
Top 12%
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
7:22/mi
22:53
↑ 97↓ 3451.5%
10K· 6.21 mi
7:09/mi
45:06
↑ 79↓ 1380.4%
15K· 9.32 mi
7:10/mi
1:07:22
↑ 67↓ 78
20K· 12.43 mi
7:19/mi
1:30:07
↑ 106↓ 860.1%
Half· 13.11 mi
7:21/mi
1:35:08
↑ 19↓ 370.5%
25K· 15.53 mi
8:09/mi
1:54:53
↑ 66↓ 880.2%
30K· 18.64 mi
8:24/mi
2:21:00
↑ 181↓ 1480.2%
20M
7:44/mi
2:31:30
↑ 64↓ 500.2%
21M
9:02/mi
2:40:32
↑ 106↓ 241.6%
35K· 21.75 mi
7:21/mi
2:46:02
↑ 17↓ 861.7%
23M
7:39/mi
2:55:37
↑ 23↓ 630.6%
24M
7:27/mi
3:03:04
↓ 821.3%
40K· 24.85 mi
7:23/mi
3:09:23
↓ 200.3%
25.2M
8:01/mi
3:12:09
↑ 13↓ 160.2%
Finish· 26.22 mi
7:05/mi
3:19:22
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:35:08
Pace7:15 /mi
2nd Half
Distance13.11 mi
Time1:44:14
Pace7:57 /mi
📊Positive Split: 9.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:50:1522:537:2222:53
7:22
-
10K
6.21 mi11:12:2845:067:1522:13
7:09
-0:13
15K
9.32 mi11:34:441:07:227:1422:16
7:10
+0:01
20K
12.43 mi11:57:291:30:077:1522:45
7:19
+0:09
Half
13.11 mi12:02:301:35:087:155:01
7:21
+0:02
25K
15.53 mi12:22:151:54:537:2419:45
8:09
+0:48
30K
18.64 mi12:48:222:21:007:3426:07
8:24
+0:15
20M
20.00 mi12:58:522:31:307:3410:30
7:44
-0:40
21M
21.00 mi13:07:542:40:327:399:02
9:02
+1:18
35K
21.75 mi13:13:242:46:027:385:30
7:21
-1:41
23M
23.00 mi13:22:592:55:377:389:35
7:39
+0:18
24M
24.00 mi13:30:263:03:047:387:27
7:27
-0:12
40K
24.85 mi13:36:453:09:237:376:19
7:23
-0:04
25.2M
25.20 mi13:39:313:12:097:382:46
8:01
+0:38
Finish
26.22 mi13:46:443:19:227:377:13
7:05
-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

7:05 /mi

Average Pace

7:37 /mi

Slowest Pace

9:02 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

7:13

4% of race

Time at Steady Pace

1:54:24

57% of race

Time at Slower Pace

1:17:45

39% of race

Average Pace: 7:36 /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 mi10:50:1522:537:2222:53
7:22
#8566
10K
6.21 mi11:12:2845:067:1522:13
7:09
#8180
15K
9.32 mi11:34:441:07:227:1422:16
7:10
#7969
20K
12.43 mi11:57:291:30:077:1522:45
7:19
#7902
Half
13.11 mi12:02:301:35:087:155:01
7:21
#7959
25K
15.53 mi12:22:151:54:537:2419:45
8:09
#8811
30K
18.64 mi12:48:222:21:007:3426:07
8:24
#9693
20M
20.00 mi12:58:522:31:307:3410:30
7:44
#9566
21M
21.00 mi13:07:542:40:327:399:02
9:02
#9763
35K
21.75 mi13:13:242:46:027:385:30
7:21
#9678
23M
23.00 mi13:22:592:55:377:389:35
7:39
#9496
24M
24.00 mi13:30:263:03:047:387:27
7:27
#9369
40K
24.85 mi13:36:453:09:237:376:19
7:23
#9199
25.2M
25.20 mi13:39:313:12:097:382:46
8:01
#9159
Finish
26.22 mi13:46:443:19:227:377:13
7:05
#9002
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi8566122212227583(Top 28%)926(Top 8%)926(Top 49%)
10K6.21 mi3.10 mi8180+3861098+1241098+1247788(Top 29%)981(Top 9%)981(Top 52%)
15K9.32 mi3.11 mi7969+2111025+731025+737583(Top 28%)926(Top 8%)926(Top 49%)
20K12.43 mi3.11 mi7902+671020+51020+57967(Top 30%)1095(Top 10%)1095(Top 58%)
Half13.11 mi0.68 mi7959-571045-251045-259089(Top 34%)1513(Top 13%)1513(Top 81%)
25K15.53 mi2.42 mi8811-8521379-3341379-33413840(Top 52%)4116(Top 36%)4116(Top 219%)
30K18.64 mi3.11 mi9693-8821758-3791758-37913733(Top 52%)4167(Top 36%)4167(Top 222%)
20M20.00 mi1.36 mi9566+1271736+221736+228390(Top 32%)1554(Top 14%)1554(Top 83%)
21M21.00 mi1.00 mi9763-1971832-961832-9613600(Top 51%)4256(Top 37%)4256(Top 227%)
35K21.75 mi0.75 mi9678+851812+201812+207532(Top 28%)1324(Top 12%)1324(Top 71%)
23M23.00 mi1.25 mi9496+1821764+481764+487488(Top 28%)1375(Top 12%)1375(Top 73%)
24M24.00 mi1.00 mi9369+1271746+181746+187398(Top 28%)1445(Top 13%)1445(Top 77%)
40K24.85 mi0.85 mi9199+1701702+441702+446049(Top 23%)1007(Top 9%)1007(Top 54%)
25.2M25.20 mi0.35 mi9159+401692+101692+106739(Top 25%)1325(Top 12%)1325(Top 71%)
Finish26.22 mi1.02 mi9002+1571648+441648+445756(Top 22%)992(Top 9%)992(Top 53%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 28%
×21story building
+97ft-345ft

Overall

7583

Females

926

F40-44

926

5K→10K

3.1 - 6.2 mi

Top 29%
×5story building
+79ft-138ft

Overall

7788

Females

981

F40-44

981

10K→15K

6.2 - 9.3 mi

Top 28%
×3story building
+67ft-78ft

Overall

7583

Females

926

F40-44

926

15K→20K

9.3 - 12.4 mi

Top 30%
×5story building
+106ft-86ft

Overall

7967

Females

1095

F40-44

1095

20K→Half

12.4 - 13.1 mi

Top 34%
×2story building
+19ft-37ft

Overall

9089

Females

1513

F40-44

1513

Half→25K

13.1 - 15.5 mi

Top 52%
×4story building
+66ft-88ft

Overall

13840

Females

4116

F40-44

4116

25K→30K

15.5 - 18.6 mi

Top 52%
×9story building
+181ft-148ft

Overall

13733

Females

4167

F40-44

4167

30K→20M

18.6 - 20.0 mi

Top 32%
×5story building
+64ft-50ft

Overall

8390

Females

1554

F40-44

1554

20M→21M

20.0 - 21.0 mi

Top 51%
×8story building
+106ft-24ft

Overall

13600

Females

4256

F40-44

4256

21M→35K

21.0 - 21.8 mi

Top 28%
×7story building
+17ft-86ft

Overall

7532

Females

1324

F40-44

1324

35K→23M

21.8 - 23.0 mi

Top 28%
×5story building
+23ft-63ft

Overall

7488

Females

1375

F40-44

1375

23M→24M

23.0 - 24.0 mi

Top 28%
×6story building
+12ft-82ft

Overall

7398

Females

1445

F40-44

1445

24M→40K

24.0 - 24.9 mi

Top 23%
×1story
+6ft-20ft

Overall

6049

Females

1007

F40-44

1007

40K→25.2M

24.9 - 25.2 mi

Top 25%
×1story
+13ft-16ft

Overall

6739

Females

1325

F40-44

1325

25.2M→Finish

25.2 - 26.2 mi

Top 22%
×2story building
+22ft-21ft

Overall

5756

Females

992

F40-44

992

Passing Analysis

Category:
Athletes Passed
1931
Passed By
2367
Net Change
-436
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#8566
5K → 10K487101+386#8566#8180
10K → 15K26352+211#8180#7969
15K → 20K14881+67#7969#7902
20K → Half663-57#7902#7959
Half → 25K8860-852#7959#8811
25K → 30K26908-882#8811#9693
30K → 20M14922+127#9693#9566
20M → 21M31228-197#9566#9763
21M → 35K927+85#9763#9678
35K → 23M19210+182#9678#9496
23M → 24M14417+127#9496#9369
24M → 40K1755+170#9369#9199
40K → 25.2M433+40#9199#9159
25.2M → Finish16710+157#9159#9002
TOTALS19312367-436
📊

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