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BOSTON MARATHON 2025

Alistair Justice

Bib: 11118•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 40%
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Top 42%
Division (M50-54)
#0 / 1996
Top 45%
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
7:13/mi
22:25
↑ 97↓ 3451.5%
10K· 6.21 mi
7:17/mi
45:02
↑ 79↓ 1380.4%
15K· 9.32 mi
7:11/mi
1:07:22
↑ 67↓ 78
20K· 12.43 mi
7:43/mi
1:31:21
↑ 106↓ 860.1%
Half· 13.11 mi
7:17/mi
1:36:19
↑ 19↓ 370.5%
25K· 15.53 mi
7:35/mi
1:54:43
↑ 66↓ 880.2%
30K· 18.64 mi
7:54/mi
2:19:17
↑ 181↓ 1480.2%
20M
8:17/mi
2:30:32
↑ 64↓ 500.2%
21M
9:44/mi
2:40:16
↑ 106↓ 241.6%
35K· 21.75 mi
7:59/mi
2:46:14
↑ 17↓ 861.7%
23M
9:42/mi
2:58:23
↑ 23↓ 630.6%
24M
8:11/mi
3:06:34
↓ 821.3%
40K· 24.85 mi
8:02/mi
3:13:26
↓ 200.3%
25.2M
8:54/mi
3:16:30
↑ 13↓ 160.2%
Finish· 26.22 mi
7:37/mi
3:24:16
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:36:19
Pace7:21 /mi
2nd Half
Distance13.11 mi
Time1:47:57
Pace8:14 /mi
📊Positive Split: 12.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:48:4622:257:1322:25
7:13
-
10K
6.21 mi11:11:2345:027:1522:37
7:17
+0:04
15K
9.32 mi11:33:431:07:227:1422:20
7:11
-0:06
20K
12.43 mi11:57:421:31:217:2123:59
7:43
+0:32
Half
13.11 mi12:02:401:36:197:214:58
7:17
-0:26
25K
15.53 mi12:21:041:54:437:2318:24
7:35
+0:18
30K
18.64 mi12:45:382:19:177:2824:34
7:54
+0:19
20M
20.00 mi12:56:532:30:327:3211:15
8:17
+0:23
21M
21.00 mi13:06:372:40:167:389:44
9:44
+1:27
35K
21.75 mi13:12:352:46:147:395:58
7:59
-1:45
23M
23.00 mi13:24:442:58:237:4512:09
9:42
+1:43
24M
24.00 mi13:32:553:06:347:468:11
8:11
-1:31
40K
24.85 mi13:39:473:13:267:476:52
8:02
-0:09
25.2M
25.20 mi13:42:513:16:307:483:04
8:54
+0:52
Finish
26.22 mi13:50:373:24:167:487:46
7:37
-1:17

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

7:11 /mi

Average Pace

7:48 /mi

Slowest Pace

9:44 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:12:20

35% of race

Time at Steady Pace

1:46:59

52% of race

Time at Slower Pace

24:57

12% of race

Average Pace: 7:47 /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 mi10:48:4622:257:1322:25
7:13
#9584
10K
6.21 mi11:11:2345:027:1522:37
7:17
#9857
15K
9.32 mi11:33:431:07:227:1422:20
7:11
#9558
20K
12.43 mi11:57:421:31:217:2123:59
7:43
#10314
Half
13.11 mi12:02:401:36:197:214:58
7:17
#10269
25K
15.53 mi12:21:041:54:437:2318:24
7:35
#10310
30K
18.64 mi12:45:382:19:177:2824:34
7:54
#10325
20M
20.00 mi12:56:532:30:327:3211:15
8:17
#10478
21M
21.00 mi13:06:372:40:167:389:44
9:44
#10923
35K
21.75 mi13:12:352:46:147:395:58
7:59
#10951
23M
23.00 mi13:24:442:58:237:4512:09
9:42
#11608
24M
24.00 mi13:32:553:06:347:468:11
8:11
#11619
40K
24.85 mi13:39:473:13:267:476:52
8:02
#11532
25.2M
25.20 mi13:42:513:16:307:483:04
8:54
#11516
Finish
26.22 mi13:50:373:24:167:487:46
7:37
#11433
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi9584793979399017(Top 32%)7561(Top 47%)7561(Top 379%)
10K6.21 mi3.10 mi9857-2738098-1598098-15910178(Top 36%)8250(Top 51%)8250(Top 413%)
15K9.32 mi3.11 mi9558+2997904+1947904+1949017(Top 32%)7561(Top 47%)7561(Top 379%)
20K12.43 mi3.11 mi10314-7568269-3658269-36512575(Top 44%)9224(Top 57%)9224(Top 462%)
Half13.11 mi0.68 mi10269+458240+298240+299805(Top 35%)7933(Top 49%)7933(Top 397%)
25K15.53 mi2.42 mi10310-418233+78233+710670(Top 38%)8232(Top 51%)8232(Top 412%)
30K18.64 mi3.11 mi10325-158188+458188+4510687(Top 38%)8021(Top 50%)8021(Top 402%)
20M20.00 mi1.36 mi10478-1538211-238211-2312322(Top 43%)8677(Top 54%)8677(Top 435%)
21M21.00 mi1.00 mi10923-4458386-1758386-17517162(Top 60%)10758(Top 67%)10758(Top 539%)
35K21.75 mi0.75 mi10951-288376+108376+1012077(Top 43%)8357(Top 52%)8357(Top 419%)
23M23.00 mi1.25 mi11608-6578643-2678643-26719437(Top 68%)11636(Top 72%)11636(Top 583%)
24M24.00 mi1.00 mi11619-118609+348609+3412434(Top 44%)8385(Top 52%)8385(Top 420%)
40K24.85 mi0.85 mi11532+878539+708539+7010412(Top 37%)7258(Top 45%)7258(Top 364%)
25.2M25.20 mi0.35 mi11516+168518+218518+2111142(Top 39%)7548(Top 47%)7548(Top 378%)
Finish26.22 mi1.02 mi11433+838434+848434+8410101(Top 36%)7038(Top 44%)7038(Top 353%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 32%
×21story building
+97ft-345ft

Overall

9017

Males

7561

M50-54

7561

5K→10K

3.1 - 6.2 mi

Top 36%
×5story building
+79ft-138ft

Overall

10178

Males

8250

M50-54

8250

10K→15K

6.2 - 9.3 mi

Top 32%
×3story building
+67ft-78ft

Overall

9017

Males

7561

M50-54

7561

15K→20K

9.3 - 12.4 mi

Top 44%
×5story building
+106ft-86ft

Overall

12575

Males

9224

M50-54

9224

20K→Half

12.4 - 13.1 mi

Top 35%
×2story building
+19ft-37ft

Overall

9805

Males

7933

M50-54

7933

Half→25K

13.1 - 15.5 mi

Top 38%
×4story building
+66ft-88ft

Overall

10670

Males

8232

M50-54

8232

25K→30K

15.5 - 18.6 mi

Top 38%
×9story building
+181ft-148ft

Overall

10687

Males

8021

M50-54

8021

30K→20M

18.6 - 20.0 mi

Top 43%
×5story building
+64ft-50ft

Overall

12322

Males

8677

M50-54

8677

20M→21M

20.0 - 21.0 mi

Top 60%
×8story building
+106ft-24ft

Overall

17162

Males

10758

M50-54

10758

21M→35K

21.0 - 21.8 mi

Top 43%
×7story building
+17ft-86ft

Overall

12077

Males

8357

M50-54

8357

35K→23M

21.8 - 23.0 mi

Top 68%
×5story building
+23ft-63ft

Overall

19437

Males

11636

M50-54

11636

23M→24M

23.0 - 24.0 mi

Top 44%
×6story building
+12ft-82ft

Overall

12434

Males

8385

M50-54

8385

24M→40K

24.0 - 24.9 mi

Top 37%
×1story
+6ft-20ft

Overall

10412

Males

7258

M50-54

7258

40K→25.2M

24.9 - 25.2 mi

Top 39%
×1story
+13ft-16ft

Overall

11142

Males

7548

M50-54

7548

25.2M→Finish

25.2 - 26.2 mi

Top 36%
×2story building
+22ft-21ft

Overall

10101

Males

7038

M50-54

7038

Passing Analysis

Category:
Athletes Passed
1499
Passed By
3344
Net Change
-1849
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9584
5K → 10K128400-273#9584#9857
10K → 15K35152+299#9857#9558
15K → 20K47801-756#9558#10314
20K → Half5914+45#10314#10269
Half → 25K149190-41#10269#10310
25K → 30K237251-15#10310#10325
30K → 20M71224-153#10325#10478
20M → 21M23468-445#10478#10923
21M → 35K4977-28#10923#10951
35K → 23M13670-657#10951#11608
23M → 24M8495-11#11608#11619
24M → 40K11831+87#11619#11532
40K → 25.2M4731+16#11532#11516
25.2M → Finish12340+83#11516#11433
TOTALS14993344-1849
📊

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