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BOSTON MARATHON 2023

Bianca Elphick

Bib: 17473•F

0:00
0:00
/ mi
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Top 40%
Division (F18-39)
#0 / 4884
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
7:53/mi
24:31
↑ 97↓ 3451.5%
10K· 6.21 mi
7:57/mi
49:12
↑ 79↓ 1380.4%
15K· 9.32 mi
8:01/mi
1:14:07
↑ 67↓ 78
20K· 12.43 mi
8:09/mi
1:39:26
↑ 106↓ 860.1%
Half· 13.11 mi
7:56/mi
1:44:51
↑ 19↓ 370.5%
25K· 15.53 mi
8:07/mi
2:04:31
↑ 66↓ 880.2%
30K· 18.64 mi
8:28/mi
2:30:49
↑ 181↓ 1480.2%
20M
8:42/mi
2:42:38
↑ 64↓ 500.2%
21M
9:23/mi
2:52:01
↑ 106↓ 241.6%
35K· 21.75 mi
8:32/mi
2:58:24
↑ 17↓ 861.7%
23M
8:54/mi
3:09:33
↑ 23↓ 630.6%
24M
9:01/mi
3:18:34
↓ 821.3%
40K· 24.85 mi
8:56/mi
3:26:12
↓ 200.3%
25.2M
9:28/mi
3:29:28
↑ 13↓ 160.2%
Finish· 26.22 mi
8:30/mi
3:38:08
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:44:51
Pace8:00 /mi
2nd Half
Distance13.11 mi
Time1:53:17
Pace8:38 /mi
📊Positive Split: 8.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:14:5524:317:5324:31
7:53
-
10K
6.21 mi11:39:3649:127:5524:41
7:57
+0:04
15K
9.32 mi12:04:311:14:077:5724:55
8:01
+0:04
20K
12.43 mi12:29:501:39:268:0025:19
8:09
+0:08
Half
13.11 mi12:35:151:44:518:005:25
7:56
-0:13
25K
15.53 mi12:54:552:04:318:0119:40
8:07
+0:11
30K
18.64 mi13:21:132:30:498:0526:18
8:28
+0:21
20M
20.00 mi13:33:022:42:388:0811:49
8:42
+0:14
21M
21.00 mi13:42:252:52:018:119:23
9:23
+0:41
35K
21.75 mi13:48:482:58:248:126:23
8:32
-0:51
23M
23.00 mi13:59:573:09:338:1411:09
8:54
+0:22
24M
24.00 mi14:08:583:18:348:169:01
9:01
+0:07
40K
24.85 mi14:16:363:26:128:187:38
8:56
-0:05
25.2M
25.20 mi14:19:523:29:288:193:16
9:28
+0:32
Finish
26.22 mi14:28:323:38:088:208:40
8:30
-0:58

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

7:53 /mi

Average Pace

8:20 /mi

Slowest Pace

9:28 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:04:31

57% of race

Time at Steady Pace

53:10

24% of race

Time at Slower Pace

40:27

19% of race

Average Pace: 8:19 /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 mi11:14:5524:317:5324:31
7:53
#13184
10K
6.21 mi11:39:3649:127:5524:41
7:57
#13734
15K
9.32 mi12:04:311:14:077:5724:55
8:01
#13987
20K
12.43 mi12:29:501:39:268:0025:19
8:09
#14121
Half
13.11 mi12:35:151:44:518:005:25
7:56
#14106
25K
15.53 mi12:54:552:04:318:0119:40
8:07
#13985
30K
18.64 mi13:21:132:30:498:0526:18
8:28
#14034
20M
20.00 mi13:33:022:42:388:0811:49
8:42
#14094
21M
21.00 mi13:42:252:52:018:119:23
9:23
#14145
35K
21.75 mi13:48:482:58:248:126:23
8:32
#14198
23M
23.00 mi13:59:573:09:338:1411:09
8:54
#14268
24M
24.00 mi14:08:583:18:348:169:01
9:01
#14405
40K
24.85 mi14:16:363:26:128:187:38
8:56
#14454
25.2M
25.20 mi14:19:523:29:288:193:16
9:28
#14459
Finish
26.22 mi14:28:323:38:088:208:40
8:30
#14458
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi131843548354814556(Top 55%)4420(Top 39%)4420(Top 90%)
10K6.21 mi3.10 mi13734-5503890-3423890-34214378(Top 54%)4288(Top 38%)4288(Top 88%)
15K9.32 mi3.11 mi13987-2534051-1614051-16114556(Top 55%)4420(Top 39%)4420(Top 90%)
20K12.43 mi3.11 mi14121-1344158-1074158-10714595(Top 55%)4459(Top 39%)4459(Top 91%)
Half13.11 mi0.68 mi14106+154148+104148+1013967(Top 52%)4076(Top 36%)4076(Top 83%)
25K15.53 mi2.42 mi13985+1214100+484100+4813595(Top 51%)3981(Top 35%)3981(Top 82%)
30K18.64 mi3.11 mi14034-494171-714171-7114090(Top 53%)4387(Top 38%)4387(Top 90%)
20M20.00 mi1.36 mi14094-604226-554226-5514844(Top 56%)4905(Top 43%)4905(Top 100%)
21M21.00 mi1.00 mi14145-514278-524278-5215414(Top 58%)5291(Top 46%)5291(Top 108%)
35K21.75 mi0.75 mi14198-534329-514329-5115488(Top 58%)5394(Top 47%)5394(Top 110%)
23M23.00 mi1.25 mi14268-704394-654394-6515571(Top 58%)5490(Top 48%)5490(Top 112%)
24M24.00 mi1.00 mi14405-1374495-1014495-10117313(Top 65%)6519(Top 57%)6519(Top 133%)
40K24.85 mi0.85 mi14454-494549-544549-5415770(Top 59%)5714(Top 50%)5714(Top 117%)
25.2M25.20 mi0.35 mi14459-54559-104559-1015094(Top 57%)5348(Top 47%)5348(Top 110%)
Finish26.22 mi1.02 mi14458+14576-174576-1715465(Top 58%)5512(Top 48%)5512(Top 113%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 55%
×21story building
+97ft-345ft

Overall

14556

Females

4420

F18-39

4420

5K→10K

3.1 - 6.2 mi

Top 54%
×5story building
+79ft-138ft

Overall

14378

Females

4288

F18-39

4288

10K→15K

6.2 - 9.3 mi

Top 55%
×3story building
+67ft-78ft

Overall

14556

Females

4420

F18-39

4420

15K→20K

9.3 - 12.4 mi

Top 55%
×5story building
+106ft-86ft

Overall

14595

Females

4459

F18-39

4459

20K→Half

12.4 - 13.1 mi

Top 52%
×2story building
+19ft-37ft

Overall

13967

Females

4076

F18-39

4076

Half→25K

13.1 - 15.5 mi

Top 51%
×4story building
+66ft-88ft

Overall

13595

Females

3981

F18-39

3981

25K→30K

15.5 - 18.6 mi

Top 53%
×9story building
+181ft-148ft

Overall

14090

Females

4387

F18-39

4387

30K→20M

18.6 - 20.0 mi

Top 56%
×5story building
+64ft-50ft

Overall

14844

Females

4905

F18-39

4905

20M→21M

20.0 - 21.0 mi

Top 58%
×8story building
+106ft-24ft

Overall

15414

Females

5291

F18-39

5291

21M→35K

21.0 - 21.8 mi

Top 58%
×7story building
+17ft-86ft

Overall

15488

Females

5394

F18-39

5394

35K→23M

21.8 - 23.0 mi

Top 58%
×5story building
+23ft-63ft

Overall

15571

Females

5490

F18-39

5490

23M→24M

23.0 - 24.0 mi

Top 65%
×6story building
+12ft-82ft

Overall

17313

Females

6519

F18-39

6519

24M→40K

24.0 - 24.9 mi

Top 59%
×1story
+6ft-20ft

Overall

15770

Females

5714

F18-39

5714

40K→25.2M

24.9 - 25.2 mi

Top 57%
×1story
+13ft-16ft

Overall

15094

Females

5348

F18-39

5348

25.2M→Finish

25.2 - 26.2 mi

Top 58%
×2story building
+22ft-21ft

Overall

15465

Females

5512

F18-39

5512

Passing Analysis

Category:
Athletes Passed
1145
Passed By
2419
Net Change
-1274
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#13184
5K → 10K112662-550#13184#13734
10K → 15K89342-253#13734#13987
15K → 20K141275-134#13987#14121
20K → Half3924+15#14121#14106
Half → 25K18867+121#14106#13985
25K → 30K175224-49#13985#14034
30K → 20M70130-60#14034#14094
20M → 21M66117-51#14094#14145
21M → 35K3285-53#14145#14198
35K → 23M66136-70#14198#14268
23M → 24M43180-137#14268#14405
24M → 40K4089-49#14405#14454
40K → 25.2M2227-5#14454#14459
25.2M → Finish6261+1#14459#14458
TOTALS11452419-1274
📊

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