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BOSTON MARATHON 2023

Erin Childs

Bib: 30326•F

MA

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

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
33:16
Rank: #25201
Start → 5K
10:42/mi
33:16 split
10K· 6.21 mi
1:05:32
Rank: #24793 (+408)
5K → 10K
10:23/mi
32:16 split
15K· 9.32 mi
1:38:49
Rank: #24815 (-22)
10K → 15K
10:43/mi
33:17 split
20K· 12.43 mi
2:12:31
Rank: #24695 (+120)
15K → 20K
10:51/mi
33:42 split
Half· 13.11 mi
2:19:51
Rank: #24699 (-4)
20K → Half
10:45/mi
7:20 split
25K· 15.53 mi
2:46:34
Rank: #24600 (+99)
Half → 25K
11:01/mi
26:43 split
30K· 18.64 mi
3:21:48
Rank: #24406 (+194)
25K → 30K
11:20/mi
35:14 split
20M
3:37:28
Rank: #24326 (+80)
30K → 20M
11:32/mi
15:40 split
21M
3:50:10
Rank: #24282 (+44)
20M → 21M
12:42/mi
12:42 split
35K· 21.75 mi
3:58:10
Rank: #24231 (+51)
21M → 35K
10:42/mi
8:00 split
23M
4:12:32
Rank: #24199 (+32)
35K → 23M
11:28/mi
14:22 split
24M
4:24:15
Rank: #24206 (-7)
23M → 24M
11:43/mi
11:43 split
40K· 24.85 mi
4:34:18
Rank: #24176 (+30)
24M → 40K
11:45/mi
10:03 split
25.2M
4:38:48
Rank: #24178 (-2)
40K → 25.2M
13:03/mi
4:30 split
Finish· 26.22 mi
4:50:12
Rank: #24192 (-14)
25.2M → Finish
11:11/mi
11:24 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:19:51
Pace10:40 /mi
2nd Half
Distance13.11 mi
Time2:30:21
Pace11:28 /mi
📊Positive Split: 7.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:49:3233:1610:4233:16
10:42
-
10K
6.21 mi12:21:481:05:3210:3332:16
10:23
-0:19
15K
9.32 mi12:55:051:38:4910:3633:17
10:43
+0:20
20K
12.43 mi13:28:472:12:3110:4033:42
10:51
+0:08
Half
13.11 mi13:36:072:19:5110:407:20
10:45
-0:06
25K
15.53 mi14:02:502:46:3410:4326:43
11:01
+0:16
30K
18.64 mi14:38:043:21:4810:5035:14
11:20
+0:19
20M
20.00 mi14:53:443:37:2810:5215:40
11:32
+0:12
21M
21.00 mi15:06:263:50:1010:5812:42
12:42
+1:10
35K
21.75 mi15:14:263:58:1010:578:00
10:42
-2:00
23M
23.00 mi15:28:484:12:3210:5914:22
11:28
+0:46
24M
24.00 mi15:40:314:24:1511:0111:43
11:43
+0:15
40K
24.85 mi15:50:344:34:1811:0210:03
11:45
+0:02
25.2M
25.20 mi15:55:044:38:4811:044:30
13:03
+1:18
Finish
26.22 mi16:06:284:50:1211:0511:24
11:11
-1:52

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

10:23 /mi

Average Pace

11:05 /mi

Slowest Pace

13:03 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:54:09

39% of race

Time at Steady Pace

2:17:05

47% of race

Time at Slower Pace

38:58

13% 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 mi11:49:3233:1610:4233:16
10:42
#25201
10K
6.21 mi12:21:481:05:3210:3332:16
10:23
#24793
15K
9.32 mi12:55:051:38:4910:3633:17
10:43
#24815
20K
12.43 mi13:28:472:12:3110:4033:42
10:51
#24695
Half
13.11 mi13:36:072:19:5110:407:20
10:45
#24699
25K
15.53 mi14:02:502:46:3410:4326:43
11:01
#24600
30K
18.64 mi14:38:043:21:4810:5035:14
11:20
#24406
20M
20.00 mi14:53:443:37:2810:5215:40
11:32
#24326
21M
21.00 mi15:06:263:50:1010:5812:42
12:42
#24282
35K
21.75 mi15:14:263:58:1010:578:00
10:42
#24231
23M
23.00 mi15:28:484:12:3210:5914:22
11:28
#24199
24M
24.00 mi15:40:314:24:1511:0111:43
11:43
#24206
40K
24.85 mi15:50:344:34:1811:0210:03
11:45
#24176
25.2M
25.20 mi15:55:044:38:4811:044:30
13:03
#24178
Finish
26.22 mi16:06:284:50:1211:0511:24
11:11
#24192
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi25201105451054524821(Top 93%)10366(Top 91%)10366(Top 552%)
10K6.21 mi3.10 mi24793+40810319+22610319+22624469(Top 92%)10150(Top 89%)10150(Top 540%)
15K9.32 mi3.11 mi24815-2210346-2710346-2724821(Top 93%)10366(Top 91%)10366(Top 552%)
20K12.43 mi3.11 mi24695+12010288+5810288+5824389(Top 92%)10143(Top 89%)10143(Top 540%)
Half13.11 mi0.68 mi24699-4102881028824603(Top 92%)10267(Top 90%)10267(Top 547%)
25K15.53 mi2.42 mi24600+9910247+4110247+4124016(Top 90%)9962(Top 87%)9962(Top 530%)
30K18.64 mi3.11 mi24406+19410152+9510152+9523640(Top 89%)9801(Top 86%)9801(Top 522%)
20M20.00 mi1.36 mi24326+8010119+3310119+3323575(Top 89%)9830(Top 86%)9830(Top 523%)
21M21.00 mi1.00 mi24282+4410104+1510104+1523718(Top 89%)9936(Top 87%)9936(Top 529%)
35K21.75 mi0.75 mi24231+5110086+1810086+1822758(Top 85%)9463(Top 83%)9463(Top 504%)
23M23.00 mi1.25 mi24199+3210074+1210074+1223214(Top 87%)9703(Top 85%)9703(Top 517%)
24M24.00 mi1.00 mi24206-710080-610080-624162(Top 91%)10252(Top 90%)10252(Top 546%)
40K24.85 mi0.85 mi24176+3010072+810072+823586(Top 89%)9990(Top 87%)9990(Top 532%)
25.2M25.20 mi0.35 mi24178-210080-810080-824044(Top 90%)10209(Top 89%)10209(Top 544%)
Finish26.22 mi1.02 mi24192-1410087-710087-724289(Top 91%)10299(Top 90%)10299(Top 548%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 93%
×21story building
+97ft-345ft

Overall

24821

Females

10366

F40-44

10366

5K→10K

3.1 - 6.2 mi

Top 92%
×5story building
+79ft-138ft

Overall

24469

Females

10150

F40-44

10150

10K→15K

6.2 - 9.3 mi

Top 93%
×3story building
+67ft-78ft

Overall

24821

Females

10366

F40-44

10366

15K→20K

9.3 - 12.4 mi

Top 92%
×5story building
+106ft-86ft

Overall

24389

Females

10143

F40-44

10143

20K→Half

12.4 - 13.1 mi

Top 92%
×2story building
+19ft-37ft

Overall

24603

Females

10267

F40-44

10267

Half→25K

13.1 - 15.5 mi

Top 90%
×4story building
+66ft-88ft

Overall

24016

Females

9962

F40-44

9962

25K→30K

15.5 - 18.6 mi

Top 89%
×9story building
+181ft-148ft

Overall

23640

Females

9801

F40-44

9801

30K→20M

18.6 - 20.0 mi

Top 89%
×5story building
+64ft-50ft

Overall

23575

Females

9830

F40-44

9830

20M→21M

20.0 - 21.0 mi

Top 89%
×8story building
+106ft-24ft

Overall

23718

Females

9936

F40-44

9936

21M→35K

21.0 - 21.8 mi

Top 85%
×7story building
+17ft-86ft

Overall

22758

Females

9463

F40-44

9463

35K→23M

21.8 - 23.0 mi

Top 87%
×5story building
+23ft-63ft

Overall

23214

Females

9703

F40-44

9703

23M→24M

23.0 - 24.0 mi

Top 91%
×6story building
+12ft-82ft

Overall

24162

Females

10252

F40-44

10252

24M→40K

24.0 - 24.9 mi

Top 89%
×1story
+6ft-20ft

Overall

23586

Females

9990

F40-44

9990

40K→25.2M

24.9 - 25.2 mi

Top 90%
×1story
+13ft-16ft

Overall

24044

Females

10209

F40-44

10209

25.2M→Finish

25.2 - 26.2 mi

Top 91%
×2story building
+22ft-21ft

Overall

24289

Females

10299

F40-44

10299

Passing Analysis

Category:
Athletes Passed
1453
Passed By
444
Net Change
+1009
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#25201
5K → 10K45648+408#25201#24793
10K → 15K107129-22#24793#24815
15K → 20K17050+120#24815#24695
20K → Half1519-4#24695#24699
Half → 25K12526+99#24699#24600
25K → 30K21622+194#24600#24406
30K → 20M10020+80#24406#24326
20M → 21M6420+44#24326#24282
21M → 35K532+51#24282#24231
35K → 23M4614+32#24231#24199
23M → 24M2128-7#24199#24206
24M → 40K4818+30#24206#24176
40K → 25.2M1517-2#24176#24178
25.2M → Finish1731-14#24178#24192
TOTALS1453444+1009
📊

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