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BOSTON MARATHON 2023

Emma Backshall

Bib: 30548•F

CA

0:00
0:00
/ mi
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Division (F18-39)
#0 / 4884
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
29:50
Rank: #22389
Start → 5K
29:50 | 9:36/mi
10K· 6.21 mi
1:00:30
Rank: #23002 (-613)
5K → 10K
30:40 | 9:52/mi
15K· 9.32 mi
1:34:45
Rank: #23934 (-932)
10K → 15K
34:15 | 11:01/mi
20K· 12.43 mi
2:07:33
Rank: #23951 (-17)
15K → 20K
32:48 | 10:33/mi
Half· 13.11 mi
2:14:37
Rank: #23935 (+16)
20K → Half
7:04 | 10:21/mi
25K· 15.53 mi
2:41:42
Rank: #23987 (-52)
Half → 25K
27:05 | 11:10/mi
30K· 18.64 mi
3:17:29
Rank: #23984 (+3)
25K → 30K
35:47 | 11:31/mi
20M
3:34:29
Rank: #24072 (-88)
30K → 20M
17:00 | 12:31/mi
21M
3:47:36
Rank: #24095 (-23)
20M → 21M
13:07 | 13:07/mi
35K· 21.75 mi
3:55:34
Rank: #24059 (+36)
21M → 35K
7:58 | 10:39/mi
23M
4:10:55
Rank: #24077 (-18)
35K → 23M
15:21 | 12:16/mi
24M
4:23:41
Rank: #24161 (-84)
23M → 24M
12:46 | 12:46/mi
40K· 24.85 mi
4:34:01
Rank: #24150 (+11)
24M → 40K
10:20 | 12:05/mi
25.2M
4:38:14
Rank: #24140 (+10)
40K → 25.2M
4:13 | 12:14/mi
Finish· 26.22 mi
4:48:18
Rank: #24062 (+78)
25.2M → Finish
10:04 | 9:53/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:14:37
Pace10:16 /mi
2nd Half
Distance13.11 mi
Time2:33:41
Pace11:43 /mi
📊Positive Split: 14.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:47:4629:509:3629:50
9:36
-
10K
6.21 mi12:18:261:00:309:4430:40
9:52
+0:16
15K
9.32 mi12:52:411:34:4510:1034:15
11:01
+1:09
20K
12.43 mi13:25:292:07:3310:1632:48
10:33
-0:28
Half
13.11 mi13:32:332:14:3710:167:04
10:21
-0:12
25K
15.53 mi13:59:382:41:4210:2527:05
11:10
+0:49
30K
18.64 mi14:35:253:17:2910:3635:47
11:31
+0:21
20M
20.00 mi14:52:253:34:2910:4317:00
12:31
+1:00
21M
21.00 mi15:05:323:47:3610:5013:07
13:07
+0:36
35K
21.75 mi15:13:303:55:3410:507:58
10:39
-2:28
23M
23.00 mi15:28:514:10:5510:5515:21
12:16
+1:37
24M
24.00 mi15:41:374:23:4110:5912:46
12:46
+0:30
40K
24.85 mi15:51:574:34:0111:0110:20
12:05
-0:41
25.2M
25.20 mi15:56:104:38:1411:024:13
12:14
+0:09
Finish
26.22 mi16:06:144:48:1811:0010:04
9:53
-2:21

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

9:36 /mi

Average Pace

11:00 /mi

Slowest Pace

13:07 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:50:26

38% of race

Time at Steady Pace

1:45:05

36% of race

Time at Slower Pace

1:12:47

25% of race

Average Pace: 11:00 /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 mi11:47:4629:509:3629:50
9:36
#22389
10K
6.21 mi12:18:261:00:309:4430:40
9:52
#23002
15K
9.32 mi12:52:411:34:4510:1034:15
11:01
#23934
20K
12.43 mi13:25:292:07:3310:1632:48
10:33
#23951
Half
13.11 mi13:32:332:14:3710:167:04
10:21
#23935
25K
15.53 mi13:59:382:41:4210:2527:05
11:10
#23987
30K
18.64 mi14:35:253:17:2910:3635:47
11:31
#23984
20M
20.00 mi14:52:253:34:2910:4317:00
12:31
#24072
21M
21.00 mi15:05:323:47:3610:5013:07
13:07
#24095
35K
21.75 mi15:13:303:55:3410:507:58
10:39
#24059
23M
23.00 mi15:28:514:10:5510:5515:21
12:16
#24077
24M
24.00 mi15:41:374:23:4110:5912:46
12:46
#24161
40K
24.85 mi15:51:574:34:0111:0110:20
12:05
#24150
25.2M
25.20 mi15:56:104:38:1411:024:13
12:14
#24140
Finish
26.22 mi16:06:144:48:1811:0010:04
9:53
#24062
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi223899070907025204(Top 95%)10576(Top 93%)10576(Top 217%)
10K6.21 mi3.10 mi23002-6139366-2969366-29623428(Top 88%)9583(Top 84%)9583(Top 196%)
15K9.32 mi3.11 mi23934-9329855-4899855-48925204(Top 95%)10576(Top 93%)10576(Top 217%)
20K12.43 mi3.11 mi23951-179861-69861-623941(Top 90%)9870(Top 86%)9870(Top 202%)
Half13.11 mi0.68 mi23935+169853+89853+823957(Top 90%)9893(Top 87%)9893(Top 203%)
25K15.53 mi2.42 mi23987-529890-379890-3724230(Top 91%)10074(Top 88%)10074(Top 206%)
30K18.64 mi3.11 mi23984+39907-179907-1723897(Top 90%)9959(Top 87%)9959(Top 204%)
20M20.00 mi1.36 mi24072-889977-709977-7024754(Top 93%)10476(Top 92%)10476(Top 214%)
21M21.00 mi1.00 mi24095-2310002-2510002-2524227(Top 91%)10215(Top 89%)10215(Top 209%)
35K21.75 mi0.75 mi24059+369981+219981+2122686(Top 85%)9416(Top 82%)9416(Top 193%)
23M23.00 mi1.25 mi24077-1810003-2210003-2224318(Top 91%)10295(Top 90%)10295(Top 211%)
24M24.00 mi1.00 mi24161-8410055-5210055-5225313(Top 95%)10834(Top 95%)10834(Top 222%)
40K24.85 mi0.85 mi24150+1110061-610061-624000(Top 90%)10182(Top 89%)10182(Top 208%)
25.2M25.20 mi0.35 mi24140+1010058+310058+322895(Top 86%)9608(Top 84%)9608(Top 197%)
Finish26.22 mi1.02 mi24062+7810015+4310015+4321443(Top 81%)8818(Top 77%)8818(Top 181%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 95%
×21stories
+97ft-345ft

Overall

25204

Females

10576

F18-39

10576

5K→10K

3.1 - 6.2 mi

Top 88%
×5stories
+79ft-138ft

Overall

23428

Females

9583

F18-39

9583

10K→15K

6.2 - 9.3 mi

Top 95%
×3stories
+67ft-78ft

Overall

25204

Females

10576

F18-39

10576

15K→20K

9.3 - 12.4 mi

Top 90%
×5stories
+106ft-86ft

Overall

23941

Females

9870

F18-39

9870

20K→Half

12.4 - 13.1 mi

Top 90%
×2stories
+19ft-37ft

Overall

23957

Females

9893

F18-39

9893

Half→25K

13.1 - 15.5 mi

Top 91%
×4stories
+66ft-88ft

Overall

24230

Females

10074

F18-39

10074

25K→30K

15.5 - 18.6 mi

Top 90%
×9stories
+181ft-148ft

Overall

23897

Females

9959

F18-39

9959

30K→20M

18.6 - 20.0 mi

Top 93%
×5stories
+64ft-50ft

Overall

24754

Females

10476

F18-39

10476

20M→21M

20.0 - 21.0 mi

Top 91%
×8stories
+106ft-24ft

Overall

24227

Females

10215

F18-39

10215

21M→35K

21.0 - 21.8 mi

Top 85%
×7stories
+17ft-86ft

Overall

22686

Females

9416

F18-39

9416

35K→23M

21.8 - 23.0 mi

Top 91%
×5stories
+23ft-63ft

Overall

24318

Females

10295

F18-39

10295

23M→24M

23.0 - 24.0 mi

Top 95%
×6stories
+12ft-82ft

Overall

25313

Females

10834

F18-39

10834

24M→40K

24.0 - 24.9 mi

Top 90%
×1story
+6ft-20ft

Overall

24000

Females

10182

F18-39

10182

40K→25.2M

24.9 - 25.2 mi

Top 86%
×1story
+13ft-16ft

Overall

22895

Females

9608

F18-39

9608

25.2M→Finish

25.2 - 26.2 mi

Top 81%
×2stories
+22ft-21ft

Overall

21443

Females

8818

F18-39

8818

Passing Analysis

Category:
Athletes Passed
656
Passed By
2329
Net Change
-1673
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#22389
5K → 10K64677-613#22389#23002
10K → 15K4936-932#23002#23934
15K → 20K104121-17#23934#23951
20K → Half3418+16#23951#23935
Half → 25K70122-52#23935#23987
25K → 30K109106+3#23987#23984
30K → 20M26114-88#23984#24072
20M → 21M2851-23#24072#24095
21M → 35K437+36#24095#24059
35K → 23M3149-18#24059#24077
23M → 24M690-84#24077#24161
24M → 40K3928+11#24161#24150
40K → 25.2M177+10#24150#24140
25.2M → Finish813+78#24140#24062
TOTALS6562329-1673
📊

Passing Visuals

Category:
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🔥Passing Intensity

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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