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BOSTON MARATHON 2023

Amy Spero

MD

Bib: 15106 F

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 47%
Gender (Female)
#0 / 11423
Top 30%
Masters (Masters Women)
#0 / 6539
Top 16%
Division (F40-44)
#0 / 1878
Top 32%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
469 ft elev
5K· 3.11 mi
8:11/mi
25:25
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
7:58/mi
50:10
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
7:53/mi
1:14:41
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
7:55/mi
1:39:16
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
7:55/mi
1:44:40
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
8:00/mi
2:04:03
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
8:01/mi
2:28:57
↑ 181↓ 1480.2%
138 ft elev
20M
8:01/mi
2:39:50
↑ 64↓ 500.2%
148 ft elev
21M
8:24/mi
2:48:14
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
7:41/mi
2:53:59
↑ 17↓ 861.7%
156 ft elev
23M
8:07/mi
3:04:09
↑ 23↓ 630.6%
116 ft elev
24M
8:04/mi
3:12:13
↓ 821.3%
34 ft elev
40K· 24.85 mi
8:19/mi
3:19:20
↓ 200.3%
20 ft elev
25.2M
9:02/mi
3:22:27
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
8:19/mi
3:30:56
↑ 22↓ 21
17 ft elev
Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:44:40
Pace7:59 /mi
2nd Half
Distance13.11 mi
Time1:46:16
Pace8:06 /mi
📊Positive Split: 1.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:55:5125:258:1125:25
8:11
-
10K
6.21 mi11:20:3650:108:0424:45
7:58
-0:13
15K
9.32 mi11:45:071:14:418:0124:31
7:53
-0:05
20K
12.43 mi12:09:421:39:167:5924:35
7:55
+0:02
Half
13.11 mi12:15:061:44:407:595:24
7:55
0:00
25K
15.53 mi12:34:292:04:037:5919:23
8:00
+0:05
30K
18.64 mi12:59:232:28:577:5924:54
8:01
+0:01
20M
20.00 mi13:10:162:39:507:5910:53
8:01
0:00
21M
21.00 mi13:18:402:48:148:018:24
8:24
+0:23
35K
21.75 mi13:24:252:53:598:005:45
7:41
-0:43
23M
23.00 mi13:34:353:04:098:0010:10
8:07
+0:26
24M
24.00 mi13:42:393:12:138:018:04
8:04
-0:03
40K
24.85 mi13:49:463:19:208:017:07
8:19
+0:15
25.2M
25.20 mi13:52:533:22:278:023:07
9:02
+0:43
Finish
26.22 mi14:01:223:30:568:038:29
8:19
-0:43

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

7:41 /mi

Average Pace

8:03 /mi

Slowest Pace

9:02 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:27:49

99% of race

Time at Steady Pace

3:07

1% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:03 /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 mi10:55:5125:258:1125:25
8:11
#15322
10K
6.21 mi11:20:3650:108:0424:45
7:58
#14923
15K
9.32 mi11:45:071:14:418:0124:31
7:53
#14445
20K
12.43 mi12:09:421:39:167:5924:35
7:55
#14009
Half
13.11 mi12:15:061:44:407:595:24
7:55
#13981
25K
15.53 mi12:34:292:04:037:5919:23
8:00
#13756
30K
18.64 mi12:59:232:28:577:5924:54
8:01
#13214
20M
20.00 mi13:10:162:39:507:5910:53
8:01
#12988
21M
21.00 mi13:18:402:48:148:018:24
8:24
#12735
35K
21.75 mi13:24:252:53:598:005:45
7:41
#12632
23M
23.00 mi13:34:353:04:098:0010:10
8:07
#12490
24M
24.00 mi13:42:393:12:138:018:04
8:04
#12443
40K
24.85 mi13:49:463:19:208:017:07
8:19
#12452
25.2M
25.20 mi13:52:533:22:278:023:07
9:02
#12449
Finish
26.22 mi14:01:223:30:568:038:29
8:19
#12517
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi153224842484213464(Top 51%)3759(Top 33%)3759(Top 200%)
10K6.21 mi3.10 mi14923+3994605+2374605+23714543(Top 55%)4379(Top 38%)4379(Top 233%)
15K9.32 mi3.11 mi14445+4784324+2814324+28113464(Top 51%)3759(Top 33%)3759(Top 200%)
20K12.43 mi3.11 mi14009+4364094+2304094+23012737(Top 48%)3399(Top 30%)3399(Top 181%)
Half13.11 mi0.68 mi13981+284074+204074+2013722(Top 52%)3909(Top 34%)3909(Top 208%)
25K15.53 mi2.42 mi13756+2253959+1153959+11512708(Top 48%)3473(Top 30%)3473(Top 185%)
30K18.64 mi3.11 mi13214+5423677+2823677+28211037(Top 41%)2665(Top 23%)2665(Top 142%)
20M20.00 mi1.36 mi12988+2263561+1163561+11610377(Top 39%)2423(Top 21%)2423(Top 129%)
21M21.00 mi1.00 mi12735+2533433+1283433+1289898(Top 37%)2344(Top 21%)2344(Top 125%)
35K21.75 mi0.75 mi12632+1033385+483385+489901(Top 37%)2326(Top 20%)2326(Top 124%)
23M23.00 mi1.25 mi12490+1423323+623323+6210642(Top 40%)2845(Top 25%)2845(Top 151%)
24M24.00 mi1.00 mi12443+473318+53318+511723(Top 44%)3442(Top 30%)3442(Top 183%)
40K24.85 mi0.85 mi12452-93345-273345-2712234(Top 46%)3791(Top 33%)3791(Top 202%)
25.2M25.20 mi0.35 mi12449+33355-103355-1012776(Top 48%)4109(Top 36%)4109(Top 219%)
Finish26.22 mi1.02 mi12517-683416-613416-6114265(Top 54%)4877(Top 43%)4877(Top 260%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 51%
×21story building
+97ft-345ft

Overall

13464

Females

3759

F40-44

3759

5K→10K

3.1 - 6.2 mi

Top 55%
×5story building
+79ft-138ft

Overall

14543

Females

4379

F40-44

4379

10K→15K

6.2 - 9.3 mi

Top 51%
×3story building
+67ft-78ft

Overall

13464

Females

3759

F40-44

3759

15K→20K

9.3 - 12.4 mi

Top 48%
×5story building
+106ft-86ft

Overall

12737

Females

3399

F40-44

3399

20K→Half

12.4 - 13.1 mi

Top 52%
×2story building
+19ft-37ft

Overall

13722

Females

3909

F40-44

3909

Half→25K

13.1 - 15.5 mi

Top 48%
×4story building
+66ft-88ft

Overall

12708

Females

3473

F40-44

3473

25K→30K

15.5 - 18.6 mi

Top 41%
×9story building
+181ft-148ft

Overall

11037

Females

2665

F40-44

2665

30K→20M

18.6 - 20.0 mi

Top 39%
×5story building
+64ft-50ft

Overall

10377

Females

2423

F40-44

2423

20M→21M

20.0 - 21.0 mi

Top 37%
×8story building
+106ft-24ft

Overall

9898

Females

2344

F40-44

2344

21M→35K

21.0 - 21.8 mi

Top 37%
×7story building
+17ft-86ft

Overall

9901

Females

2326

F40-44

2326

35K→23M

21.8 - 23.0 mi

Top 40%
×5story building
+23ft-63ft

Overall

10642

Females

2845

F40-44

2845

23M→24M

23.0 - 24.0 mi

Top 44%
×6story building
+12ft-82ft

Overall

11723

Females

3442

F40-44

3442

24M→40K

24.0 - 24.9 mi

Top 46%
×1story
+6ft-20ft

Overall

12234

Females

3791

F40-44

3791

40K→25.2M

24.9 - 25.2 mi

Top 48%
×1story
+13ft-16ft

Overall

12776

Females

4109

F40-44

4109

25.2M→Finish

25.2 - 26.2 mi

Top 54%
×2story building
+22ft-21ft

Overall

14265

Females

4877

F40-44

4877

Passing Analysis

Category:
Athletes Passed
3374
Passed By
569
Net Change
+2805
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15322
5K → 10K539140+399#15322#14923
10K → 15K51537+478#14923#14445
15K → 20K46125+436#14445#14009
20K → Half4719+28#14009#13981
Half → 25K25934+225#13981#13756
25K → 30K56220+542#13756#13214
30K → 20M2337+226#13214#12988
20M → 21M2574+253#12988#12735
21M → 35K1096+103#12735#12632
35K → 23M16826+142#12632#12490
23M → 24M8639+47#12490#12443
24M → 40K5160-9#12443#12452
40K → 25.2M3734+3#12452#12449
25.2M → Finish50118-68#12449#12517
TOTALS3374569+2805
📊

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