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BOSTON MARATHON 2023

Amy Block

Bib: 14578•F

NH

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 44%
Gender (Female)
#0 / 11423
Top 26%
Division (F18-39)
#0 / 4884
Top 44%
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
7:49/mi
24:18
↑ 97↓ 3451.5%
10K· 6.21 mi
7:48/mi
48:33
↑ 79↓ 1380.4%
15K· 9.32 mi
7:46/mi
1:12:40
↑ 67↓ 78
20K· 12.43 mi
7:49/mi
1:36:58
↑ 106↓ 860.1%
Half· 13.11 mi
7:46/mi
1:42:16
↑ 19↓ 370.5%
25K· 15.53 mi
7:49/mi
2:01:13
↑ 66↓ 880.2%
30K· 18.64 mi
7:57/mi
2:25:56
↑ 181↓ 1480.2%
20M
8:02/mi
2:36:51
↑ 64↓ 500.2%
21M
8:43/mi
2:45:34
↑ 106↓ 241.6%
35K· 21.75 mi
7:56/mi
2:51:30
↑ 17↓ 861.7%
23M
8:16/mi
3:01:51
↑ 23↓ 630.6%
24M
8:09/mi
3:10:00
↓ 821.3%
40K· 24.85 mi
8:17/mi
3:17:05
↓ 200.3%
25.2M
8:56/mi
3:20:10
↑ 13↓ 160.2%
Finish· 26.22 mi
8:04/mi
3:28:23
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:42:16
Pace7:48 /mi
2nd Half
Distance13.11 mi
Time1:46:07
Pace8:06 /mi
📊Positive Split: 3.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:53:1724:187:4924:18
7:49
-
10K
6.21 mi11:17:3248:337:4924:15
7:48
-0:01
15K
9.32 mi11:41:391:12:407:4824:07
7:46
-0:02
20K
12.43 mi12:05:571:36:587:4824:18
7:49
+0:03
Half
13.11 mi12:11:151:42:167:485:18
7:46
-0:03
25K
15.53 mi12:30:122:01:137:4818:57
7:49
+0:03
30K
18.64 mi12:54:552:25:567:5024:43
7:57
+0:08
20M
20.00 mi13:05:502:36:517:5110:55
8:02
+0:05
21M
21.00 mi13:14:332:45:347:538:43
8:43
+0:41
35K
21.75 mi13:20:292:51:307:535:56
7:56
-0:47
23M
23.00 mi13:30:503:01:517:5410:21
8:16
+0:20
24M
24.00 mi13:38:593:10:007:558:09
8:09
-0:07
40K
24.85 mi13:46:043:17:057:567:05
8:17
+0:08
25.2M
25.20 mi13:49:093:20:107:573:05
8:56
+0:39
Finish
26.22 mi13:57:223:28:237:578:13
8:04
-0:52

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

7:46 /mi

Average Pace

7:57 /mi

Slowest Pace

8:56 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:16:35

94% of race

Time at Steady Pace

11:48

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:57 /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 mi10:53:1724:187:4924:18
7:49
#12569
10K
6.21 mi11:17:3248:337:4924:15
7:48
#12827
15K
9.32 mi11:41:391:12:407:4824:07
7:46
#12652
20K
12.43 mi12:05:571:36:587:4824:18
7:49
#12432
Half
13.11 mi12:11:151:42:167:485:18
7:46
#12419
25K
15.53 mi12:30:122:01:137:4818:57
7:49
#12205
30K
18.64 mi12:54:552:25:567:5024:43
7:57
#11845
20M
20.00 mi13:05:502:36:517:5110:55
8:02
#11732
21M
21.00 mi13:14:332:45:347:538:43
8:43
#11729
35K
21.75 mi13:20:292:51:307:535:56
7:56
#11728
23M
23.00 mi13:30:503:01:517:5410:21
8:16
#11698
24M
24.00 mi13:38:593:10:007:558:09
8:09
#11723
40K
24.85 mi13:46:043:17:057:567:05
8:17
#11732
25.2M
25.20 mi13:49:093:20:107:573:05
8:56
#11728
Finish
26.22 mi13:57:223:28:237:578:13
8:04
#11755
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi125693198319812413(Top 47%)3140(Top 27%)3140(Top 64%)
10K6.21 mi3.10 mi12827-2583333-1353333-13513179(Top 50%)3534(Top 31%)3534(Top 72%)
15K9.32 mi3.11 mi12652+1753258+753258+7512413(Top 47%)3140(Top 27%)3140(Top 64%)
20K12.43 mi3.11 mi12432+2203167+913167+9111936(Top 45%)2933(Top 26%)2933(Top 60%)
Half13.11 mi0.68 mi12419+133159+83159+812485(Top 47%)3188(Top 28%)3188(Top 65%)
25K15.53 mi2.42 mi12205+2143057+1023057+10211253(Top 42%)2629(Top 23%)2629(Top 54%)
30K18.64 mi3.11 mi11845+3602892+1652892+16510559(Top 40%)2423(Top 21%)2423(Top 50%)
20M20.00 mi1.36 mi11732+1132844+482844+4810552(Top 40%)2519(Top 22%)2519(Top 52%)
21M21.00 mi1.00 mi11729+32861-172861-1711780(Top 44%)3286(Top 29%)3286(Top 67%)
35K21.75 mi0.75 mi11728+12870-92870-911644(Top 44%)3223(Top 28%)3223(Top 66%)
23M23.00 mi1.25 mi11698+302878-82878-811656(Top 44%)3330(Top 29%)3330(Top 68%)
24M24.00 mi1.00 mi11723-252909-312909-3112270(Top 46%)3730(Top 33%)3730(Top 76%)
40K24.85 mi0.85 mi11732-92938-292938-2911937(Top 45%)3627(Top 32%)3627(Top 74%)
25.2M25.20 mi0.35 mi11728+42948-102948-1012210(Top 46%)3823(Top 33%)3823(Top 78%)
Finish26.22 mi1.02 mi11755-272987-392987-3912570(Top 47%)3987(Top 35%)3987(Top 82%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 47%
×21story building
+97ft-345ft

Overall

12413

Females

3140

F18-39

3140

5K→10K

3.1 - 6.2 mi

Top 50%
×5story building
+79ft-138ft

Overall

13179

Females

3534

F18-39

3534

10K→15K

6.2 - 9.3 mi

Top 47%
×3story building
+67ft-78ft

Overall

12413

Females

3140

F18-39

3140

15K→20K

9.3 - 12.4 mi

Top 45%
×5story building
+106ft-86ft

Overall

11936

Females

2933

F18-39

2933

20K→Half

12.4 - 13.1 mi

Top 47%
×2story building
+19ft-37ft

Overall

12485

Females

3188

F18-39

3188

Half→25K

13.1 - 15.5 mi

Top 42%
×4story building
+66ft-88ft

Overall

11253

Females

2629

F18-39

2629

25K→30K

15.5 - 18.6 mi

Top 40%
×9story building
+181ft-148ft

Overall

10559

Females

2423

F18-39

2423

30K→20M

18.6 - 20.0 mi

Top 40%
×5story building
+64ft-50ft

Overall

10552

Females

2519

F18-39

2519

20M→21M

20.0 - 21.0 mi

Top 44%
×8story building
+106ft-24ft

Overall

11780

Females

3286

F18-39

3286

21M→35K

21.0 - 21.8 mi

Top 44%
×7story building
+17ft-86ft

Overall

11644

Females

3223

F18-39

3223

35K→23M

21.8 - 23.0 mi

Top 44%
×5story building
+23ft-63ft

Overall

11656

Females

3330

F18-39

3330

23M→24M

23.0 - 24.0 mi

Top 46%
×6story building
+12ft-82ft

Overall

12270

Females

3730

F18-39

3730

24M→40K

24.0 - 24.9 mi

Top 45%
×1story
+6ft-20ft

Overall

11937

Females

3627

F18-39

3627

40K→25.2M

24.9 - 25.2 mi

Top 46%
×1story
+13ft-16ft

Overall

12210

Females

3823

F18-39

3823

25.2M→Finish

25.2 - 26.2 mi

Top 47%
×2story building
+22ft-21ft

Overall

12570

Females

3987

F18-39

3987

Passing Analysis

Category:
Athletes Passed
2088
Passed By
1274
Net Change
+814
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#12569
5K → 10K184442-258#12569#12827
10K → 15K302127+175#12827#12652
15K → 20K29575+220#12652#12432
20K → Half4128+13#12432#12419
Half → 25K24430+214#12419#12205
25K → 30K40545+360#12205#11845
30K → 20M15542+113#11845#11732
20M → 21M9188+3#11732#11729
21M → 35K4847+1#11729#11728
35K → 23M10474+30#11728#11698
23M → 24M6085-25#11698#11723
24M → 40K6069-9#11723#11732
40K → 25.2M3127+4#11732#11728
25.2M → Finish6895-27#11728#11755
TOTALS20881274+814
📊

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