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BOSTON MARATHON 2023

Molly Johnston

Bib: 25449•F

NH

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
33:38
Rank: #25414
Start → 5K
33:38 | 10:50/mi
10K· 6.21 mi
1:10:11
Rank: #25919 (-505)
5K → 10K
36:33 | 11:46/mi
15K· 9.32 mi
1:46:29
Rank: #25918 (+1)
10K → 15K
36:18 | 11:41/mi
20K· 12.43 mi
2:26:21
Rank: #26021 (-103)
15K → 20K
39:52 | 12:50/mi
Half· 13.11 mi
2:34:51
Rank: #26028 (-7)
20K → Half
8:30 | 12:28/mi
25K· 15.53 mi
3:05:52
Rank: #25976 (+52)
Half → 25K
31:01 | 12:48/mi
30K· 18.64 mi
3:51:23
Rank: #26085 (-109)
25K → 30K
45:31 | 14:39/mi
20M
4:10:38
Rank: #26087 (-2)
30K → 20M
19:15 | 14:10/mi
21M
4:26:36
Rank: #26101 (-14)
20M → 21M
15:58 | 15:58/mi
35K· 21.75 mi
4:38:00
Rank: #26131 (-30)
21M → 35K
11:24 | 15:14/mi
23M
4:57:44
Rank: #26182 (-51)
35K → 23M
19:44 | 15:46/mi
24M
5:13:35
Rank: #26230 (-48)
23M → 24M
15:51 | 15:51/mi
40K· 24.85 mi
5:27:20
Rank: #26266 (-36)
24M → 40K
13:45 | 16:05/mi
25.2M
5:32:32
Rank: #26262 (+4)
40K → 25.2M
5:12 | 15:05/mi
Finish· 26.22 mi
5:47:02
Rank: #26288 (-26)
25.2M → Finish
14:30 | 14:14/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:34:51
Pace11:49 /mi
2nd Half
Distance13.11 mi
Time3:12:11
Pace14:40 /mi
📊Positive Split: 24.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:50:5233:3810:5033:38
10:50
-
10K
6.21 mi12:27:251:10:1111:1836:33
11:46
+0:56
15K
9.32 mi13:03:431:46:2911:2536:18
11:41
-0:05
20K
12.43 mi13:43:352:26:2111:4739:52
12:50
+1:09
Half
13.11 mi13:52:052:34:5111:498:30
12:28
-0:22
25K
15.53 mi14:23:063:05:5211:5831:01
12:48
+0:20
30K
18.64 mi15:08:373:51:2312:2545:31
14:39
+1:51
20M
20.00 mi15:27:524:10:3812:3219:15
14:10
-0:29
21M
21.00 mi15:43:504:26:3612:4215:58
15:58
+1:48
35K
21.75 mi15:55:144:38:0012:4711:24
15:14
-0:44
23M
23.00 mi16:14:584:57:4412:5719:44
15:46
+0:32
24M
24.00 mi16:30:495:13:3513:0415:51
15:51
+0:05
40K
24.85 mi16:44:345:27:2013:1013:45
16:05
+0:14
25.2M
25.20 mi16:49:465:32:3213:125:12
15:05
-1:00
Finish
26.22 mi17:04:165:47:0213:1514:30
14:14
-0:51

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

10:50 /mi

Average Pace

13:15 /mi

Slowest Pace

16:05 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:05:52

54% of race

Time at Steady Pace

1:24:28

24% of race

Time at Slower Pace

1:16:42

22% of race

Average Pace: 13:14 /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 mi11:50:5233:3810:5033:38
10:50
#25414
10K
6.21 mi12:27:251:10:1111:1836:33
11:46
#25919
15K
9.32 mi13:03:431:46:2911:2536:18
11:41
#25918
20K
12.43 mi13:43:352:26:2111:4739:52
12:50
#26021
Half
13.11 mi13:52:052:34:5111:498:30
12:28
#26028
25K
15.53 mi14:23:063:05:5211:5831:01
12:48
#25976
30K
18.64 mi15:08:373:51:2312:2545:31
14:39
#26085
20M
20.00 mi15:27:524:10:3812:3219:15
14:10
#26087
21M
21.00 mi15:43:504:26:3612:4215:58
15:58
#26101
35K
21.75 mi15:55:144:38:0012:4711:24
15:14
#26131
23M
23.00 mi16:14:584:57:4412:5719:44
15:46
#26182
24M
24.00 mi16:30:495:13:3513:0415:51
15:51
#26230
40K
24.85 mi16:44:345:27:2013:1013:45
16:05
#26266
25.2M
25.20 mi16:49:465:32:3213:125:12
15:05
#26262
Finish
26.22 mi17:04:165:47:0213:1514:30
14:14
#26288
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi25414106791067925861(Top 97%)10957(Top 96%)10957(Top 224%)
10K6.21 mi3.10 mi25919-50510988-30910988-30926132(Top 98%)11130(Top 97%)11130(Top 228%)
15K9.32 mi3.11 mi25918+110993-510993-525861(Top 97%)10957(Top 96%)10957(Top 224%)
20K12.43 mi3.11 mi26021-10311054-6111054-6126154(Top 98%)11142(Top 98%)11142(Top 228%)
Half13.11 mi0.68 mi26028-7110541105426137(Top 98%)11143(Top 98%)11143(Top 228%)
25K15.53 mi2.42 mi25976+5211037+1711037+1725756(Top 97%)10936(Top 96%)10936(Top 224%)
30K18.64 mi3.11 mi26085-10911107-7011107-7026312(Top 99%)11261(Top 99%)11261(Top 231%)
20M20.00 mi1.36 mi26087-211108-111108-125923(Top 97%)11082(Top 97%)11082(Top 227%)
21M21.00 mi1.00 mi26101-1411122-1411122-1426212(Top 98%)11227(Top 98%)11227(Top 230%)
35K21.75 mi0.75 mi26131-3011144-2211144-2226448(Top 99%)11346(Top 99%)11346(Top 232%)
23M23.00 mi1.25 mi26182-5111175-3111175-3126453(Top 99%)11350(Top 99%)11350(Top 232%)
24M24.00 mi1.00 mi26230-4811205-3011205-3026510(Top 100%)11379(Top 100%)11379(Top 233%)
40K24.85 mi0.85 mi26266-3611223-1811223-1826426(Top 99%)11347(Top 99%)11347(Top 232%)
25.2M25.20 mi0.35 mi26262+411220+311220+325757(Top 97%)11057(Top 97%)11057(Top 226%)
Finish26.22 mi1.02 mi26288-2611238-1811238-1826399(Top 99%)11345(Top 99%)11345(Top 232%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 97%
×21stories
+97ft-345ft

Overall

25861

Females

10957

F18-39

10957

5K→10K

3.1 - 6.2 mi

Top 98%
×5stories
+79ft-138ft

Overall

26132

Females

11130

F18-39

11130

10K→15K

6.2 - 9.3 mi

Top 97%
×3stories
+67ft-78ft

Overall

25861

Females

10957

F18-39

10957

15K→20K

9.3 - 12.4 mi

Top 98%
×5stories
+106ft-86ft

Overall

26154

Females

11142

F18-39

11142

20K→Half

12.4 - 13.1 mi

Top 98%
×2stories
+19ft-37ft

Overall

26137

Females

11143

F18-39

11143

Half→25K

13.1 - 15.5 mi

Top 97%
×4stories
+66ft-88ft

Overall

25756

Females

10936

F18-39

10936

25K→30K

15.5 - 18.6 mi

Top 99%
×9stories
+181ft-148ft

Overall

26312

Females

11261

F18-39

11261

30K→20M

18.6 - 20.0 mi

Top 97%
×5stories
+64ft-50ft

Overall

25923

Females

11082

F18-39

11082

20M→21M

20.0 - 21.0 mi

Top 98%
×8stories
+106ft-24ft

Overall

26212

Females

11227

F18-39

11227

21M→35K

21.0 - 21.8 mi

Top 99%
×7stories
+17ft-86ft

Overall

26448

Females

11346

F18-39

11346

35K→23M

21.8 - 23.0 mi

Top 99%
×5stories
+23ft-63ft

Overall

26453

Females

11350

F18-39

11350

23M→24M

23.0 - 24.0 mi

Top 100%
×6stories
+12ft-82ft

Overall

26510

Females

11379

F18-39

11379

24M→40K

24.0 - 24.9 mi

Top 99%
×1story
+6ft-20ft

Overall

26426

Females

11347

F18-39

11347

40K→25.2M

24.9 - 25.2 mi

Top 97%
×1story
+13ft-16ft

Overall

25757

Females

11057

F18-39

11057

25.2M→Finish

25.2 - 26.2 mi

Top 99%
×2stories
+22ft-21ft

Overall

26399

Females

11345

F18-39

11345

Passing Analysis

Category:
Athletes Passed
257
Passed By
1131
Net Change
-874
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#25414
5K → 10K16521-505#25414#25919
10K → 15K7574+1#25919#25918
15K → 20K17120-103#25918#26021
20K → Half1118-7#26021#26028
Half → 25K6917+52#26028#25976
25K → 30K10119-109#25976#26085
30K → 20M2224-2#26085#26087
20M → 21M1428-14#26087#26101
21M → 35K434-30#26101#26131
35K → 23M455-51#26131#26182
23M → 24M048-48#26182#26230
24M → 40K440-36#26230#26266
40K → 25.2M84+4#26266#26262
25.2M → Finish329-26#26262#26288
TOTALS2571131-874
📊

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