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BOSTON MARATHON 2025

Alex Johnson

Bib: 5143•M

UT

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 42%
Gender (Male)
#0 / 16105
Division (M18-39)
#0 / 5642
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:10
Rank: #3785
Start → 5K
20:10 | 6:29/mi
10K· 6.21 mi
40:51
Rank: #4315 (-530)
5K → 10K
20:41 | 6:39/mi
15K· 9.32 mi
1:01:54
Rank: #4730 (-415)
10K → 15K
21:03 | 6:47/mi
20K· 12.43 mi
1:23:46
Rank: #5385 (-655)
15K → 20K
21:52 | 7:02/mi
Half· 13.11 mi
1:28:38
Rank: #5588 (-203)
20K → Half
4:52 | 7:08/mi
25K· 15.53 mi
1:46:26
Rank: #6178 (-590)
Half → 25K
17:48 | 7:20/mi
30K· 18.64 mi
2:10:50
Rank: #6793 (-615)
25K → 30K
24:24 | 7:51/mi
20M
2:22:17
Rank: #7161 (-368)
30K → 20M
11:27 | 8:26/mi
21M
2:31:42
Rank: #7543 (-382)
20M → 21M
9:25 | 9:25/mi
35K· 21.75 mi
2:38:40
Rank: #8029 (-486)
21M → 35K
6:58 | 9:19/mi
23M
2:51:35
Rank: #9145 (-1116)
35K → 23M
12:55 | 10:19/mi
24M
3:02:51
Rank: #10390 (-1245)
23M → 24M
11:16 | 11:16/mi
40K· 24.85 mi
3:12:06
Rank: #11091 (-701)
24M → 40K
9:15 | 10:49/mi
25.2M
3:16:12
Rank: #11416 (-325)
40K → 25.2M
4:06 | 11:53/mi
Finish· 26.22 mi
3:25:32
Rank: #11848 (-432)
25.2M → Finish
9:20 | 9:10/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:28:38
Pace6:46 /mi
2nd Half
Distance13.11 mi
Time1:56:54
Pace8:55 /mi
📊Positive Split: 31.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:23:3920:106:2920:10
6:29
-
10K
6.21 mi10:44:2040:516:3420:41
6:39
+0:10
15K
9.32 mi11:05:231:01:546:3821:03
6:47
+0:08
20K
12.43 mi11:27:151:23:466:4421:52
7:02
+0:15
Half
13.11 mi11:32:071:28:386:464:52
7:08
+0:06
25K
15.53 mi11:49:551:46:266:5117:48
7:20
+0:12
30K
18.64 mi12:14:192:10:507:0124:24
7:51
+0:31
20M
20.00 mi12:25:462:22:177:0711:27
8:26
+0:35
21M
21.00 mi12:35:112:31:427:139:25
9:25
+0:59
35K
21.75 mi12:42:092:38:407:186:58
9:19
-0:06
23M
23.00 mi12:55:042:51:357:2812:55
10:19
+1:00
24M
24.00 mi13:06:203:02:517:3711:16
11:16
+0:57
40K
24.85 mi13:15:353:12:067:449:15
10:49
-0:27
25.2M
25.20 mi13:19:413:16:127:474:06
11:53
+1:04
Finish
26.22 mi13:29:013:25:327:519:20
9:10
-2:43

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

6:29 /mi

Average Pace

7:51 /mi

Slowest Pace

11:53 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:46:26

52% of race

Time at Steady Pace

45:11

22% of race

Time at Slower Pace

53:55

26% of race

Average Pace: 7:50 /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 mi10:23:3920:106:2920:10
6:29
#3785
10K
6.21 mi10:44:2040:516:3420:41
6:39
#4315
15K
9.32 mi11:05:231:01:546:3821:03
6:47
#4730
20K
12.43 mi11:27:151:23:466:4421:52
7:02
#5385
Half
13.11 mi11:32:071:28:386:464:52
7:08
#5588
25K
15.53 mi11:49:551:46:266:5117:48
7:20
#6178
30K
18.64 mi12:14:192:10:507:0124:24
7:51
#6793
20M
20.00 mi12:25:462:22:177:0711:27
8:26
#7161
21M
21.00 mi12:35:112:31:427:139:25
9:25
#7543
35K
21.75 mi12:42:092:38:407:186:58
9:19
#8029
23M
23.00 mi12:55:042:51:357:2812:55
10:19
#9145
24M
24.00 mi13:06:203:02:517:3711:16
11:16
#10390
40K
24.85 mi13:15:353:12:067:449:15
10:49
#11091
25.2M
25.20 mi13:19:413:16:127:474:06
11:53
#11416
Finish
26.22 mi13:29:013:25:327:519:20
9:10
#11848
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi3785358435845850(Top 21%)5333(Top 33%)5333(Top 95%)
10K6.21 mi3.10 mi4315-5304056-4724056-4724967(Top 17%)4637(Top 29%)4637(Top 82%)
15K9.32 mi3.11 mi4730-4154426-3704426-3705850(Top 21%)5333(Top 33%)5333(Top 95%)
20K12.43 mi3.11 mi5385-6554982-5564982-5567114(Top 25%)6293(Top 39%)6293(Top 112%)
Half13.11 mi0.68 mi5588-2035139-1575139-1578561(Top 30%)7244(Top 45%)7244(Top 128%)
25K15.53 mi2.42 mi6178-5905599-4605599-4608681(Top 31%)7167(Top 45%)7167(Top 127%)
30K18.64 mi3.11 mi6793-6156050-4516050-45110309(Top 36%)7845(Top 49%)7845(Top 139%)
20M20.00 mi1.36 mi7161-3686295-2456295-24513296(Top 47%)9119(Top 57%)9119(Top 162%)
21M21.00 mi1.00 mi7543-3826512-2176512-21715673(Top 55%)10082(Top 63%)10082(Top 179%)
35K21.75 mi0.75 mi8029-4866804-2926804-29219590(Top 69%)11767(Top 73%)11767(Top 209%)
23M23.00 mi1.25 mi9145-11167416-6127416-61221451(Top 76%)12602(Top 78%)12602(Top 223%)
24M24.00 mi1.00 mi10390-12458034-6188034-61824493(Top 86%)14054(Top 87%)14054(Top 249%)
40K24.85 mi0.85 mi11091-7018327-2938327-29322707(Top 80%)13087(Top 81%)13087(Top 232%)
25.2M25.20 mi0.35 mi11416-3258459-1328459-13222951(Top 81%)13245(Top 82%)13245(Top 235%)
Finish26.22 mi1.02 mi11848-4328640-1818640-18119749(Top 70%)11681(Top 73%)11681(Top 207%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 21%
×21stories
+97ft-345ft

Overall

5850

Males

5333

M18-39

5333

5K→10K

3.1 - 6.2 mi

Top 17%
×5stories
+79ft-138ft

Overall

4967

Males

4637

M18-39

4637

10K→15K

6.2 - 9.3 mi

Top 21%
×3stories
+67ft-78ft

Overall

5850

Males

5333

M18-39

5333

15K→20K

9.3 - 12.4 mi

Top 25%
×5stories
+106ft-86ft

Overall

7114

Males

6293

M18-39

6293

20K→Half

12.4 - 13.1 mi

Top 30%
×2stories
+19ft-37ft

Overall

8561

Males

7244

M18-39

7244

Half→25K

13.1 - 15.5 mi

Top 31%
×4stories
+66ft-88ft

Overall

8681

Males

7167

M18-39

7167

25K→30K

15.5 - 18.6 mi

Top 36%
×9stories
+181ft-148ft

Overall

10309

Males

7845

M18-39

7845

30K→20M

18.6 - 20.0 mi

Top 47%
×5stories
+64ft-50ft

Overall

13296

Males

9119

M18-39

9119

20M→21M

20.0 - 21.0 mi

Top 55%
×8stories
+106ft-24ft

Overall

15673

Males

10082

M18-39

10082

21M→35K

21.0 - 21.8 mi

Top 69%
×7stories
+17ft-86ft

Overall

19590

Males

11767

M18-39

11767

35K→23M

21.8 - 23.0 mi

Top 76%
×5stories
+23ft-63ft

Overall

21451

Males

12602

M18-39

12602

23M→24M

23.0 - 24.0 mi

Top 86%
×6stories
+12ft-82ft

Overall

24493

Males

14054

M18-39

14054

24M→40K

24.0 - 24.9 mi

Top 80%
×1story
+6ft-20ft

Overall

22707

Males

13087

M18-39

13087

40K→25.2M

24.9 - 25.2 mi

Top 81%
×1story
+13ft-16ft

Overall

22951

Males

13245

M18-39

13245

25.2M→Finish

25.2 - 26.2 mi

Top 70%
×2stories
+22ft-21ft

Overall

19749

Males

11681

M18-39

11681

Passing Analysis

Category:
Athletes Passed
251
Passed By
8312
Net Change
-8063
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#3785
5K → 10K21551-530#3785#4315
10K → 15K25440-415#4315#4730
15K → 20K20675-655#4730#5385
20K → Half3206-203#5385#5588
Half → 25K40630-590#5588#6178
25K → 30K55670-615#6178#6793
30K → 20M30398-368#6793#7161
20M → 21M18400-382#7161#7543
21M → 35K7493-486#7543#8029
35K → 23M91125-1116#8029#9145
23M → 24M31246-1245#9145#10390
24M → 40K3704-701#10390#11091
40K → 25.2M4329-325#11091#11416
25.2M → Finish13445-432#11416#11848
TOTALS2518312-8063
📊

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