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BOSTON MARATHON 2025

Mackenzie Johnson

Bib: 15658•F

SC

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 34%
Gender (Female)
#0 / 12228
Top 17%
Division (F18-39)
#0 / 5469
Top 30%
Race Day Weather
50°/40°F
broken clouds

⏱️ 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
7:39/mi
23:45
↑ 97↓ 3451.5%
10K· 6.21 mi
7:29/mi
47:00
↑ 79↓ 1380.4%
15K· 9.32 mi
7:27/mi
1:10:09
↑ 67↓ 78
20K· 12.43 mi
7:34/mi
1:33:41
↑ 106↓ 860.1%
Half· 13.11 mi
7:15/mi
1:38:38
↑ 19↓ 370.5%
25K· 15.53 mi
7:23/mi
1:56:31
↑ 66↓ 880.2%
30K· 18.64 mi
7:37/mi
2:20:10
↑ 181↓ 1480.2%
20M
7:33/mi
2:30:26
↑ 64↓ 500.2%
21M
7:56/mi
2:38:22
↑ 106↓ 241.6%
35K· 21.75 mi
7:28/mi
2:43:57
↑ 17↓ 861.7%
23M
7:52/mi
2:53:48
↑ 23↓ 630.6%
24M
7:41/mi
3:01:29
↓ 821.3%
40K· 24.85 mi
7:42/mi
3:08:04
↓ 200.3%
25.2M
8:22/mi
3:10:57
↑ 13↓ 160.2%
Finish· 26.22 mi
7:24/mi
3:18:29
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:38:38
Pace7:31 /mi
2nd Half
Distance13.11 mi
Time1:39:51
Pace7:37 /mi
📊Positive Split: 1.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:56:0523:457:3923:45
7:39
-
10K
6.21 mi11:19:2047:007:3423:15
7:29
-0:10
15K
9.32 mi11:42:291:10:097:3223:09
7:27
-0:02
20K
12.43 mi12:06:011:33:417:3223:32
7:34
+0:07
Half
13.11 mi12:10:581:38:387:314:57
7:15
-0:19
25K
15.53 mi12:28:511:56:317:3017:53
7:23
+0:08
30K
18.64 mi12:52:302:20:107:3123:39
7:37
+0:14
20M
20.00 mi13:02:462:30:267:3110:16
7:33
-0:04
21M
21.00 mi13:10:422:38:227:327:56
7:56
+0:23
35K
21.75 mi13:16:172:43:577:325:35
7:28
-0:28
23M
23.00 mi13:26:082:53:487:339:51
7:52
+0:24
24M
24.00 mi13:33:493:01:297:347:41
7:41
-0:11
40K
24.85 mi13:40:243:08:047:346:35
7:42
+0:01
25.2M
25.20 mi13:43:173:10:577:352:53
8:22
+0:40
Finish
26.22 mi13:50:493:18:297:357:32
7:24
-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

7:15 /mi

Average Pace

7:35 /mi

Slowest Pace

8:22 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:15:36

99% of race

Time at Steady Pace

2:53

1% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:34 /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 mi10:56:0523:457:3923:45
7:39
#13473
10K
6.21 mi11:19:2047:007:3423:15
7:29
#12696
15K
9.32 mi11:42:291:10:097:3223:09
7:27
#12224
20K
12.43 mi12:06:011:33:417:3223:32
7:34
#11984
Half
13.11 mi12:10:581:38:387:314:57
7:15
#11843
25K
15.53 mi12:28:511:56:317:3017:53
7:23
#11336
30K
18.64 mi12:52:302:20:107:3123:39
7:37
#10759
20M
20.00 mi13:02:462:30:267:3110:16
7:33
#10437
21M
21.00 mi13:10:422:38:227:327:56
7:56
#10175
35K
21.75 mi13:16:172:43:577:325:35
7:28
#10074
23M
23.00 mi13:26:082:53:487:339:51
7:52
#9986
24M
24.00 mi13:33:493:01:297:347:41
7:41
#9898
40K
24.85 mi13:40:243:08:047:346:35
7:42
#9796
25.2M
25.20 mi13:43:173:10:577:352:53
8:22
#9753
Finish
26.22 mi13:50:493:18:297:357:32
7:24
#9673
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi134733580358011352(Top 40%)2554(Top 21%)2554(Top 47%)
10K6.21 mi3.10 mi12696+7773173+4073173+40711960(Top 42%)2792(Top 23%)2792(Top 51%)
15K9.32 mi3.11 mi12224+4722960+2132960+21311352(Top 40%)2554(Top 21%)2554(Top 47%)
20K12.43 mi3.11 mi11984+2402859+1012859+10111388(Top 40%)2673(Top 22%)2673(Top 49%)
Half13.11 mi0.68 mi11843+1412799+602799+609684(Top 34%)1812(Top 15%)1812(Top 33%)
25K15.53 mi2.42 mi11336+5072559+2402559+2408983(Top 32%)1634(Top 13%)1634(Top 30%)
30K18.64 mi3.11 mi10759+5772342+2172342+2178550(Top 30%)1623(Top 13%)1623(Top 30%)
20M20.00 mi1.36 mi10437+3222214+1282214+1287420(Top 26%)1315(Top 11%)1315(Top 24%)
21M21.00 mi1.00 mi10175+2622127+872127+877017(Top 25%)1315(Top 11%)1315(Top 24%)
35K21.75 mi0.75 mi10074+1012105+222105+228412(Top 30%)1853(Top 15%)1853(Top 34%)
23M23.00 mi1.25 mi9986+882103+22103+29071(Top 32%)2288(Top 19%)2288(Top 42%)
24M24.00 mi1.00 mi9898+882089+142089+149035(Top 32%)2343(Top 19%)2343(Top 43%)
40K24.85 mi0.85 mi9796+1022077+122077+128112(Top 29%)2039(Top 17%)2039(Top 37%)
25.2M25.20 mi0.35 mi9753+432075+22075+28025(Top 28%)2083(Top 17%)2083(Top 38%)
Finish26.22 mi1.02 mi9673+802078-32078-38449(Top 30%)2260(Top 18%)2260(Top 41%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 40%
×21story building
+97ft-345ft

Overall

11352

Females

2554

F18-39

2554

5K→10K

3.1 - 6.2 mi

Top 42%
×5story building
+79ft-138ft

Overall

11960

Females

2792

F18-39

2792

10K→15K

6.2 - 9.3 mi

Top 40%
×3story building
+67ft-78ft

Overall

11352

Females

2554

F18-39

2554

15K→20K

9.3 - 12.4 mi

Top 40%
×5story building
+106ft-86ft

Overall

11388

Females

2673

F18-39

2673

20K→Half

12.4 - 13.1 mi

Top 34%
×2story building
+19ft-37ft

Overall

9684

Females

1812

F18-39

1812

Half→25K

13.1 - 15.5 mi

Top 32%
×4story building
+66ft-88ft

Overall

8983

Females

1634

F18-39

1634

25K→30K

15.5 - 18.6 mi

Top 30%
×9story building
+181ft-148ft

Overall

8550

Females

1623

F18-39

1623

30K→20M

18.6 - 20.0 mi

Top 26%
×5story building
+64ft-50ft

Overall

7420

Females

1315

F18-39

1315

20M→21M

20.0 - 21.0 mi

Top 25%
×8story building
+106ft-24ft

Overall

7017

Females

1315

F18-39

1315

21M→35K

21.0 - 21.8 mi

Top 30%
×7story building
+17ft-86ft

Overall

8412

Females

1853

F18-39

1853

35K→23M

21.8 - 23.0 mi

Top 32%
×5story building
+23ft-63ft

Overall

9071

Females

2288

F18-39

2288

23M→24M

23.0 - 24.0 mi

Top 32%
×6story building
+12ft-82ft

Overall

9035

Females

2343

F18-39

2343

24M→40K

24.0 - 24.9 mi

Top 29%
×1story
+6ft-20ft

Overall

8112

Females

2039

F18-39

2039

40K→25.2M

24.9 - 25.2 mi

Top 28%
×1story
+13ft-16ft

Overall

8025

Females

2083

F18-39

2083

25.2M→Finish

25.2 - 26.2 mi

Top 30%
×2story building
+22ft-21ft

Overall

8449

Females

2260

F18-39

2260

Passing Analysis

Category:
Athletes Passed
4179*
Passed By
379
Net Change
+3800
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#13473
5K → 10K83255+777#13473#12696
10K → 15K51543+472#12696#12224
15K → 20K31373+240#12224#11984
20K → Half1432+141#11984#11843
Half → 25K5092+507#11843#11336
25K → 30K59922+577#11336#10759
30K → 20M3231+322#10759#10437
20M → 21M27210+262#10437#10175
21M → 35K11615+101#10175#10074
35K → 23M140*52+88#10074#9986
23M → 24M12638+88#9986#9898
24M → 40K11917+102#9898#9796
40K → 25.2M5916+43#9796#9753
25.2M → Finish11333+80#9753#9673
TOTALS4179*379+3800

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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