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BOSTON MARATHON 2023

Alison Johnson

Bib: 17850•F

MN

0:00
0:00
/ mi
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Top 38%
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
25:58
Rank: #16567
Start → 5K
25:58 | 8:21/mi
10K· 6.21 mi
51:29
Rank: #16402 (+165)
5K → 10K
25:31 | 8:13/mi
15K· 9.32 mi
1:16:55
Rank: #16198 (+204)
10K → 15K
25:26 | 8:11/mi
20K· 12.43 mi
1:42:49
Rank: #16077 (+121)
15K → 20K
25:54 | 8:20/mi
Half· 13.11 mi
1:48:17
Rank: #15985 (+92)
20K → Half
5:28 | 8:01/mi
25K· 15.53 mi
2:07:58
Rank: #15605 (+380)
Half → 25K
19:41 | 8:07/mi
30K· 18.64 mi
2:33:27
Rank: #15006 (+599)
25K → 30K
25:29 | 8:12/mi
20M
2:44:32
Rank: #14749 (+257)
30K → 20M
11:05 | 8:09/mi
21M
2:53:04
Rank: #14488 (+261)
20M → 21M
8:32 | 8:32/mi
35K· 21.75 mi
2:59:12
Rank: #14457 (+31)
21M → 35K
6:08 | 8:12/mi
23M
3:09:42
Rank: #14315 (+142)
35K → 23M
10:30 | 8:23/mi
24M
3:17:54
Rank: #14213 (+102)
23M → 24M
8:12 | 8:12/mi
40K· 24.85 mi
3:25:05
Rank: #14142 (+71)
24M → 40K
7:11 | 8:24/mi
25.2M
3:28:13
Rank: #14109 (+33)
40K → 25.2M
3:08 | 9:05/mi
Finish· 26.22 mi
3:36:18
Rank: #14005 (+104)
25.2M → Finish
8:05 | 7:56/mi

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:48:17
Pace8:16 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:48:01
Pace8:14 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:16:5225:588:2125:58
8:21
-
10K
6.21 mi11:42:2351:298:1725:31
8:13
-0:08
15K
9.32 mi12:07:491:16:558:1525:26
8:11
-0:02
20K
12.43 mi12:33:431:42:498:1625:54
8:20
+0:09
Half
13.11 mi12:39:111:48:178:165:28
8:01
-0:19
25K
15.53 mi12:58:522:07:588:1419:41
8:07
+0:06
30K
18.64 mi13:24:212:33:278:1425:29
8:12
+0:05
20M
20.00 mi13:35:262:44:328:1411:05
8:09
-0:03
21M
21.00 mi13:43:582:53:048:148:32
8:32
+0:23
35K
21.75 mi13:50:062:59:128:146:08
8:12
-0:20
23M
23.00 mi14:00:363:09:428:1510:30
8:23
+0:11
24M
24.00 mi14:08:483:17:548:158:12
8:12
-0:11
40K
24.85 mi14:15:593:25:058:157:11
8:24
+0:12
25.2M
25.20 mi14:19:073:28:138:163:08
9:05
+0:41
Finish
26.22 mi14:27:123:36:188:158:05
7:56
-1:09

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

7:56 /mi

Average Pace

8:15 /mi

Slowest Pace

9:05 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:33:10

99% of race

Time at Steady Pace

3:08

1% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:15 /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 mi11:16:5225:588:2125:58
8:21
#16567
10K
6.21 mi11:42:2351:298:1725:31
8:13
#16402
15K
9.32 mi12:07:491:16:558:1525:26
8:11
#16198
20K
12.43 mi12:33:431:42:498:1625:54
8:20
#16077
Half
13.11 mi12:39:111:48:178:165:28
8:01
#15985
25K
15.53 mi12:58:522:07:588:1419:41
8:07
#15605
30K
18.64 mi13:24:212:33:278:1425:29
8:12
#15006
20M
20.00 mi13:35:262:44:328:1411:05
8:09
#14749
21M
21.00 mi13:43:582:53:048:148:32
8:32
#14488
35K
21.75 mi13:50:062:59:128:146:08
8:12
#14457
23M
23.00 mi14:00:363:09:428:1510:30
8:23
#14315
24M
24.00 mi14:08:483:17:548:158:12
8:12
#14213
40K
24.85 mi14:15:593:25:058:157:11
8:24
#14142
25.2M
25.20 mi14:19:073:28:138:163:08
9:05
#14109
Finish
26.22 mi14:27:123:36:188:158:05
7:56
#14005
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi165675642564215763(Top 59%)5142(Top 45%)5142(Top 105%)
10K6.21 mi3.10 mi16402+1655526+1165526+11616351(Top 61%)5479(Top 48%)5479(Top 112%)
15K9.32 mi3.11 mi16198+2045408+1185408+11815763(Top 59%)5142(Top 45%)5142(Top 105%)
20K12.43 mi3.11 mi16077+1215355+535355+5315849(Top 60%)5251(Top 46%)5251(Top 108%)
Half13.11 mi0.68 mi15985+925300+555300+5514539(Top 55%)4408(Top 39%)4408(Top 90%)
25K15.53 mi2.42 mi15605+3805093+2075093+20713639(Top 51%)4006(Top 35%)4006(Top 82%)
30K18.64 mi3.11 mi15006+5994750+3434750+34312377(Top 46%)3404(Top 30%)3404(Top 70%)
20M20.00 mi1.36 mi14749+2574606+1444606+14411433(Top 43%)2968(Top 26%)2968(Top 61%)
21M21.00 mi1.00 mi14488+2614484+1224484+12210714(Top 40%)2740(Top 24%)2740(Top 56%)
35K21.75 mi0.75 mi14457+314482+24482+213462(Top 51%)4261(Top 37%)4261(Top 87%)
23M23.00 mi1.25 mi14315+1424425+574425+5712522(Top 47%)3812(Top 33%)3812(Top 78%)
24M24.00 mi1.00 mi14213+1024375+504375+5012640(Top 47%)3940(Top 34%)3940(Top 81%)
40K24.85 mi0.85 mi14142+714358+174358+1712744(Top 48%)4082(Top 36%)4082(Top 84%)
25.2M25.20 mi0.35 mi14109+334349+94349+913069(Top 49%)4267(Top 37%)4267(Top 87%)
Finish26.22 mi1.02 mi14005+1044297+524297+5211662(Top 44%)3533(Top 31%)3533(Top 72%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 59%
×21stories
+97ft-345ft

Overall

15763

Females

5142

F18-39

5142

5K→10K

3.1 - 6.2 mi

Top 61%
×5stories
+79ft-138ft

Overall

16351

Females

5479

F18-39

5479

10K→15K

6.2 - 9.3 mi

Top 59%
×3stories
+67ft-78ft

Overall

15763

Females

5142

F18-39

5142

15K→20K

9.3 - 12.4 mi

Top 60%
×5stories
+106ft-86ft

Overall

15849

Females

5251

F18-39

5251

20K→Half

12.4 - 13.1 mi

Top 55%
×2stories
+19ft-37ft

Overall

14539

Females

4408

F18-39

4408

Half→25K

13.1 - 15.5 mi

Top 51%
×4stories
+66ft-88ft

Overall

13639

Females

4006

F18-39

4006

25K→30K

15.5 - 18.6 mi

Top 46%
×9stories
+181ft-148ft

Overall

12377

Females

3404

F18-39

3404

30K→20M

18.6 - 20.0 mi

Top 43%
×5stories
+64ft-50ft

Overall

11433

Females

2968

F18-39

2968

20M→21M

20.0 - 21.0 mi

Top 40%
×8stories
+106ft-24ft

Overall

10714

Females

2740

F18-39

2740

21M→35K

21.0 - 21.8 mi

Top 51%
×7stories
+17ft-86ft

Overall

13462

Females

4261

F18-39

4261

35K→23M

21.8 - 23.0 mi

Top 47%
×5stories
+23ft-63ft

Overall

12522

Females

3812

F18-39

3812

23M→24M

23.0 - 24.0 mi

Top 47%
×6stories
+12ft-82ft

Overall

12640

Females

3940

F18-39

3940

24M→40K

24.0 - 24.9 mi

Top 48%
×1story
+6ft-20ft

Overall

12744

Females

4082

F18-39

4082

40K→25.2M

24.9 - 25.2 mi

Top 49%
×1story
+13ft-16ft

Overall

13069

Females

4267

F18-39

4267

25.2M→Finish

25.2 - 26.2 mi

Top 44%
×2stories
+22ft-21ft

Overall

11662

Females

3533

F18-39

3533

Passing Analysis

Category:
Athletes Passed
3174
Passed By
612
Net Change
+2562
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#16567
5K → 10K399234+165#16567#16402
10K → 15K30399+204#16402#16198
15K → 20K230109+121#16198#16077
20K → Half964+92#16077#15985
Half → 25K39212+380#15985#15605
25K → 30K6023+599#15605#15006
30K → 20M2592+257#15006#14749
20M → 21M2643+261#14749#14488
21M → 35K6029+31#14488#14457
35K → 23M16220+142#14457#14315
23M → 24M12725+102#14315#14213
24M → 40K10332+71#14213#14142
40K → 25.2M5118+33#14142#14109
25.2M → Finish12622+104#14109#14005
TOTALS3174612+2562
📊

Passing Visuals

Category:

📈Position Graph

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🎨Heatmap Timeline

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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