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BOSTON MARATHON 2023

Mariel Johnson

Bib: 26750•F

MA

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

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
9:16/mi
28:48
↑ 97↓ 3451.5%
10K· 6.21 mi
9:08/mi
57:10
↑ 79↓ 1380.4%
15K· 9.32 mi
9:11/mi
1:25:42
↑ 67↓ 78
20K· 12.43 mi
9:22/mi
1:54:49
↑ 106↓ 860.1%
Half· 13.11 mi
9:26/mi
2:01:15
↑ 19↓ 370.5%
25K· 15.53 mi
9:25/mi
2:24:05
↑ 66↓ 880.2%
30K· 18.64 mi
9:46/mi
2:54:25
↑ 181↓ 1480.2%
20M
10:13/mi
3:08:18
↑ 64↓ 500.2%
21M
10:05/mi
3:18:23
↑ 106↓ 241.6%
35K· 21.75 mi
9:43/mi
3:25:39
↑ 17↓ 861.7%
23M
10:06/mi
3:38:18
↑ 23↓ 630.6%
24M
10:58/mi
3:49:16
↓ 821.3%
40K· 24.85 mi
10:21/mi
3:58:07
↓ 200.3%
25.2M
10:32/mi
4:01:45
↑ 13↓ 160.2%
Finish· 26.22 mi
9:44/mi
4:11:40
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:01:15
Pace9:15 /mi
2nd Half
Distance13.11 mi
Time2:10:25
Pace9:57 /mi
📊Positive Split: 7.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:45:0428:489:1628:48
9:16
-
10K
6.21 mi12:13:2657:109:1228:22
9:08
-0:08
15K
9.32 mi12:41:581:25:429:1228:32
9:11
+0:03
20K
12.43 mi13:11:051:54:499:1429:07
9:22
+0:11
Half
13.11 mi13:17:312:01:159:156:26
9:26
+0:04
25K
15.53 mi13:40:212:24:059:1722:50
9:25
-0:01
30K
18.64 mi14:10:412:54:259:2130:20
9:46
+0:21
20M
20.00 mi14:24:343:08:189:2513:53
10:13
+0:27
21M
21.00 mi14:34:393:18:239:2710:05
10:05
-0:08
35K
21.75 mi14:41:553:25:399:277:16
9:43
-0:22
23M
23.00 mi14:54:343:38:189:2912:39
10:06
+0:23
24M
24.00 mi15:05:323:49:169:3310:58
10:58
+0:52
40K
24.85 mi15:14:233:58:079:358:51
10:21
-0:37
25.2M
25.20 mi15:18:014:01:459:363:38
10:32
+0:11
Finish
26.22 mi15:27:564:11:409:369:55
9:44
-0:48

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

9:08 /mi

Average Pace

9:36 /mi

Slowest Pace

10:58 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:24:05

57% of race

Time at Steady Pace

47:31

19% of race

Time at Slower Pace

1:00:04

24% of race

Average Pace: 9:36 /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 mi11:45:0428:489:1628:48
9:16
#21439
10K
6.21 mi12:13:2657:109:1228:22
9:08
#21397
15K
9.32 mi12:41:581:25:429:1228:32
9:11
#21349
20K
12.43 mi13:11:051:54:499:1429:07
9:22
#21311
Half
13.11 mi13:17:312:01:159:156:26
9:26
#21342
25K
15.53 mi13:40:212:24:059:1722:50
9:25
#21201
30K
18.64 mi14:10:412:54:259:2130:20
9:46
#21033
20M
20.00 mi14:24:343:08:189:2513:53
10:13
#21017
21M
21.00 mi14:34:393:18:239:2710:05
10:05
#20840
35K
21.75 mi14:41:553:25:399:277:16
9:43
#20816
23M
23.00 mi14:54:343:38:189:2912:39
10:06
#20776
24M
24.00 mi15:05:323:49:169:3310:58
10:58
#20888
40K
24.85 mi15:14:233:58:079:358:51
10:21
#20880
25.2M
25.20 mi15:18:014:01:459:363:38
10:32
#20848
Finish
26.22 mi15:27:564:11:409:369:55
9:44
#20842
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi214398601860121255(Top 80%)8376(Top 73%)8376(Top 171%)
10K6.21 mi3.10 mi21397+428529+728529+7221405(Top 80%)8502(Top 74%)8502(Top 174%)
15K9.32 mi3.11 mi21349+488473+568473+5621255(Top 80%)8376(Top 73%)8376(Top 171%)
20K12.43 mi3.11 mi21311+388438+358438+3521165(Top 80%)8322(Top 73%)8322(Top 170%)
Half13.11 mi0.68 mi21342-318459-218459-2121918(Top 82%)8733(Top 76%)8733(Top 179%)
25K15.53 mi2.42 mi21201+1418378+818378+8120570(Top 77%)8031(Top 70%)8031(Top 164%)
30K18.64 mi3.11 mi21033+1688302+768302+7620349(Top 76%)7968(Top 70%)7968(Top 163%)
20M20.00 mi1.36 mi21017+168302830221068(Top 79%)8446(Top 74%)8446(Top 173%)
21M21.00 mi1.00 mi20840+1778219+838219+8318359(Top 69%)6978(Top 61%)6978(Top 143%)
35K21.75 mi0.75 mi20816+248218+18218+120525(Top 77%)8236(Top 72%)8236(Top 169%)
23M23.00 mi1.25 mi20776+408205+138205+1320306(Top 76%)8136(Top 71%)8136(Top 167%)
24M24.00 mi1.00 mi20888-1128282-778282-7722993(Top 86%)9628(Top 84%)9628(Top 197%)
40K24.85 mi0.85 mi20880+88289-78289-720884(Top 78%)8536(Top 75%)8536(Top 175%)
25.2M25.20 mi0.35 mi20848+328275+148275+1419264(Top 72%)7659(Top 67%)7659(Top 157%)
Finish26.22 mi1.02 mi20842+68279-48279-420919(Top 79%)8511(Top 75%)8511(Top 174%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 80%
×21story building
+97ft-345ft

Overall

21255

Females

8376

F18-39

8376

5K→10K

3.1 - 6.2 mi

Top 80%
×5story building
+79ft-138ft

Overall

21405

Females

8502

F18-39

8502

10K→15K

6.2 - 9.3 mi

Top 80%
×3story building
+67ft-78ft

Overall

21255

Females

8376

F18-39

8376

15K→20K

9.3 - 12.4 mi

Top 80%
×5story building
+106ft-86ft

Overall

21165

Females

8322

F18-39

8322

20K→Half

12.4 - 13.1 mi

Top 82%
×2story building
+19ft-37ft

Overall

21918

Females

8733

F18-39

8733

Half→25K

13.1 - 15.5 mi

Top 77%
×4story building
+66ft-88ft

Overall

20570

Females

8031

F18-39

8031

25K→30K

15.5 - 18.6 mi

Top 76%
×9story building
+181ft-148ft

Overall

20349

Females

7968

F18-39

7968

30K→20M

18.6 - 20.0 mi

Top 79%
×5story building
+64ft-50ft

Overall

21068

Females

8446

F18-39

8446

20M→21M

20.0 - 21.0 mi

Top 69%
×8story building
+106ft-24ft

Overall

18359

Females

6978

F18-39

6978

21M→35K

21.0 - 21.8 mi

Top 77%
×7story building
+17ft-86ft

Overall

20525

Females

8236

F18-39

8236

35K→23M

21.8 - 23.0 mi

Top 76%
×5story building
+23ft-63ft

Overall

20306

Females

8136

F18-39

8136

23M→24M

23.0 - 24.0 mi

Top 86%
×6story building
+12ft-82ft

Overall

22993

Females

9628

F18-39

9628

24M→40K

24.0 - 24.9 mi

Top 78%
×1story
+6ft-20ft

Overall

20884

Females

8536

F18-39

8536

40K→25.2M

24.9 - 25.2 mi

Top 72%
×1story
+13ft-16ft

Overall

19264

Females

7659

F18-39

7659

25.2M→Finish

25.2 - 26.2 mi

Top 79%
×2story building
+22ft-21ft

Overall

20919

Females

8511

F18-39

8511

Passing Analysis

Category:
Athletes Passed
1610
Passed By
1013
Net Change
+597
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#21439
5K → 10K298256+42#21439#21397
10K → 15K182134+48#21397#21349
15K → 20K164126+38#21349#21311
20K → Half1748-31#21311#21342
Half → 25K17938+141#21342#21201
25K → 30K23163+168#21201#21033
30K → 20M7862+16#21033#21017
20M → 21M1803+177#21017#20840
21M → 35K4925+24#20840#20816
35K → 23M8848+40#20816#20776
23M → 24M22134-112#20776#20888
24M → 40K4133+8#20888#20880
40K → 25.2M364+32#20880#20848
25.2M → Finish4539+6#20848#20842
TOTALS16101013+597
📊

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