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BOSTON MARATHON 2023

Emily Stratford

Bib: 25518•F

AZ

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Division (F50-54)
#0 / 1207
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
9:17/mi
28:50
↑ 97↓ 3451.5%
10K· 6.21 mi
9:45/mi
59:09
↑ 79↓ 1380.4%
15K· 9.32 mi
10:49/mi
1:32:44
↑ 67↓ 78
20K· 12.43 mi
10:17/mi
2:04:40
↑ 106↓ 860.1%
Half· 13.11 mi
10:13/mi
2:11:38
↑ 19↓ 370.5%
25K· 15.53 mi
10:33/mi
2:37:12
↑ 66↓ 880.2%
30K· 18.64 mi
11:41/mi
3:13:30
↑ 181↓ 1480.2%
20M
12:03/mi
3:29:52
↑ 64↓ 500.2%
21M
13:41/mi
3:43:33
↑ 106↓ 241.6%
35K· 21.75 mi
10:46/mi
3:51:36
↑ 17↓ 861.7%
23M
12:51/mi
4:07:41
↑ 23↓ 630.6%
24M
11:27/mi
4:19:08
↓ 821.3%
40K· 24.85 mi
14:17/mi
4:31:21
↓ 200.3%
25.2M
16:26/mi
4:37:01
↑ 13↓ 160.2%
Finish· 26.22 mi
12:45/mi
4:50:01
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:11:38
Pace10:02 /mi
2nd Half
Distance13.11 mi
Time2:38:23
Pace12:05 /mi
📊Positive Split: 20.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:44:5028:509:1728:50
9:17
-
10K
6.21 mi12:15:0959:099:3130:19
9:45
+0:28
15K
9.32 mi12:48:441:32:449:5733:35
10:49
+1:04
20K
12.43 mi13:20:402:04:4010:0231:56
10:17
-0:32
Half
13.11 mi13:27:382:11:3810:026:58
10:13
-0:04
25K
15.53 mi13:53:122:37:1210:0725:34
10:33
+0:20
30K
18.64 mi14:29:303:13:3010:2336:18
11:41
+1:08
20M
20.00 mi14:45:523:29:5210:3016:22
12:03
+0:22
21M
21.00 mi14:59:333:43:3310:3913:41
13:41
+1:38
35K
21.75 mi15:07:363:51:3610:398:03
10:46
-2:55
23M
23.00 mi15:23:414:07:4110:4616:05
12:51
+2:05
24M
24.00 mi15:35:084:19:0810:4811:27
11:27
-1:24
40K
24.85 mi15:47:214:31:2110:5512:13
14:17
+2:50
25.2M
25.20 mi15:53:014:37:0111:005:40
16:26
+2:09
Finish
26.22 mi16:06:014:50:0111:0413:00
12:45
-3:41

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

9:17 /mi

Average Pace

11:04 /mi

Slowest Pace

16:26 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:38:03

34% of race

Time at Steady Pace

2:11:19

45% of race

Time at Slower Pace

1:00:39

21% of race

Average Pace: 11:04 /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 mi11:44:5028:509:1728:50
9:17
#21478
10K
6.21 mi12:15:0959:099:3130:19
9:45
#22379
15K
9.32 mi12:48:441:32:449:5733:35
10:49
#23497
20K
12.43 mi13:20:402:04:4010:0231:56
10:17
#23501
Half
13.11 mi13:27:382:11:3810:026:58
10:13
#23496
25K
15.53 mi13:53:122:37:1210:0725:34
10:33
#23457
30K
18.64 mi14:29:303:13:3010:2336:18
11:41
#23580
20M
20.00 mi14:45:523:29:5210:3016:22
12:03
#23633
21M
21.00 mi14:59:333:43:3310:3913:41
13:41
#23751
35K
21.75 mi15:07:363:51:3610:398:03
10:46
#23728
23M
23.00 mi15:23:414:07:4110:4616:05
12:51
#23846
24M
24.00 mi15:35:084:19:0810:4811:27
11:27
#23854
40K
24.85 mi15:47:214:31:2110:5512:13
14:17
#23995
25.2M
25.20 mi15:53:014:37:0111:005:40
16:26
#24060
Finish
26.22 mi16:06:014:50:0111:0413:00
12:45
#24178
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi214788626862624947(Top 94%)10431(Top 91%)10431(Top 864%)
10K6.21 mi3.10 mi22379-9019040-4149040-41423190(Top 87%)9441(Top 83%)9441(Top 782%)
15K9.32 mi3.11 mi23497-11189608-5689608-56824947(Top 94%)10431(Top 91%)10431(Top 864%)
20K12.43 mi3.11 mi23501-49606+29606+223440(Top 88%)9589(Top 84%)9589(Top 794%)
Half13.11 mi0.68 mi23496+59608-29608-223707(Top 89%)9749(Top 85%)9749(Top 808%)
25K15.53 mi2.42 mi23457+399598+109598+1023271(Top 87%)9540(Top 84%)9540(Top 790%)
30K18.64 mi3.11 mi23580-1239687-899687-8924110(Top 91%)10074(Top 88%)10074(Top 835%)
20M20.00 mi1.36 mi23633-539728-419728-4124260(Top 91%)10219(Top 89%)10219(Top 847%)
21M21.00 mi1.00 mi23751-1189801-739801-7324759(Top 93%)10482(Top 92%)10482(Top 868%)
35K21.75 mi0.75 mi23728+239791+109791+1022868(Top 86%)9529(Top 83%)9529(Top 789%)
23M23.00 mi1.25 mi23846-1189868-779868-7724937(Top 94%)10599(Top 93%)10599(Top 878%)
24M24.00 mi1.00 mi23854-89880-129880-1223811(Top 89%)10060(Top 88%)10060(Top 833%)
40K24.85 mi0.85 mi23995-1419968-889968-8825844(Top 97%)11096(Top 97%)11096(Top 919%)
25.2M25.20 mi0.35 mi24060-6510010-4210010-4226249(Top 99%)11275(Top 99%)11275(Top 934%)
Finish26.22 mi1.02 mi24178-11810082-7210082-7225820(Top 97%)11083(Top 97%)11083(Top 918%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 94%
×21story building
+97ft-345ft

Overall

24947

Females

10431

F50-54

10431

5K→10K

3.1 - 6.2 mi

Top 87%
×5story building
+79ft-138ft

Overall

23190

Females

9441

F50-54

9441

10K→15K

6.2 - 9.3 mi

Top 94%
×3story building
+67ft-78ft

Overall

24947

Females

10431

F50-54

10431

15K→20K

9.3 - 12.4 mi

Top 88%
×5story building
+106ft-86ft

Overall

23440

Females

9589

F50-54

9589

20K→Half

12.4 - 13.1 mi

Top 89%
×2story building
+19ft-37ft

Overall

23707

Females

9749

F50-54

9749

Half→25K

13.1 - 15.5 mi

Top 87%
×4story building
+66ft-88ft

Overall

23271

Females

9540

F50-54

9540

25K→30K

15.5 - 18.6 mi

Top 91%
×9story building
+181ft-148ft

Overall

24110

Females

10074

F50-54

10074

30K→20M

18.6 - 20.0 mi

Top 91%
×5story building
+64ft-50ft

Overall

24260

Females

10219

F50-54

10219

20M→21M

20.0 - 21.0 mi

Top 93%
×8story building
+106ft-24ft

Overall

24759

Females

10482

F50-54

10482

21M→35K

21.0 - 21.8 mi

Top 86%
×7story building
+17ft-86ft

Overall

22868

Females

9529

F50-54

9529

35K→23M

21.8 - 23.0 mi

Top 94%
×5story building
+23ft-63ft

Overall

24937

Females

10599

F50-54

10599

23M→24M

23.0 - 24.0 mi

Top 89%
×6story building
+12ft-82ft

Overall

23811

Females

10060

F50-54

10060

24M→40K

24.0 - 24.9 mi

Top 97%
×1story
+6ft-20ft

Overall

25844

Females

11096

F50-54

11096

40K→25.2M

24.9 - 25.2 mi

Top 99%
×1story
+13ft-16ft

Overall

26249

Females

11275

F50-54

11275

25.2M→Finish

25.2 - 26.2 mi

Top 97%
×2story building
+22ft-21ft

Overall

25820

Females

11083

F50-54

11083

Passing Analysis

Category:
Athletes Passed
534
Passed By
3234
Net Change
-2700
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#21478
5K → 10K40941-901#21478#22379
10K → 15K91127-1118#22379#23497
15K → 20K128132-4#23497#23501
20K → Half3328+5#23501#23496
Half → 25K11172+39#23496#23457
25K → 30K61184-123#23457#23580
30K → 20M4194-53#23580#23633
20M → 21M15133-118#23633#23751
21M → 35K3916+23#23751#23728
35K → 23M16134-118#23728#23846
23M → 24M3240-8#23846#23854
24M → 40K3144-141#23854#23995
40K → 25.2M166-65#23995#24060
25.2M → Finish5123-118#24060#24178
TOTALS5343234-2700
📊

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