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BOSTON MARATHON 2025

Aldrin Gonzalez

Bib: 12531•M

FL

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 47%
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M50-54)
#0 / 1996
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
6:44/mi
20:55
↑ 97↓ 3451.5%
10K· 6.21 mi
6:55/mi
42:23
↑ 79↓ 1380.4%
15K· 9.32 mi
7:15/mi
1:04:53
↑ 67↓ 78
20K· 12.43 mi
7:41/mi
1:28:46
↑ 106↓ 860.1%
Half· 13.11 mi
7:30/mi
1:33:53
↑ 19↓ 370.5%
25K· 15.53 mi
8:36/mi
1:54:43
↑ 66↓ 880.2%
30K· 18.64 mi
8:39/mi
2:21:35
↑ 181↓ 1480.2%
20M
8:56/mi
2:33:43
↑ 64↓ 500.2%
21M
10:08/mi
2:43:51
↑ 106↓ 241.6%
35K· 21.75 mi
9:05/mi
2:50:39
↑ 17↓ 861.7%
23M
8:44/mi
3:01:35
↑ 23↓ 630.6%
24M
9:39/mi
3:11:14
↓ 821.3%
40K· 24.85 mi
9:44/mi
3:19:33
↓ 200.3%
25.2M
9:05/mi
3:22:41
↑ 13↓ 160.2%
Finish· 26.22 mi
8:12/mi
3:31:02
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:33:53
Pace7:10 /mi
2nd Half
Distance13.11 mi
Time1:57:09
Pace8:56 /mi
📊Positive Split: 24.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:49:1320:556:4420:55
6:44
-
10K
6.21 mi11:10:4142:236:4921:28
6:55
+0:11
15K
9.32 mi11:33:111:04:536:5822:30
7:15
+0:20
20K
12.43 mi11:57:041:28:467:0923:53
7:41
+0:26
Half
13.11 mi12:02:111:33:537:105:07
7:30
-0:11
25K
15.53 mi12:23:011:54:437:2320:50
8:36
+1:06
30K
18.64 mi12:49:532:21:357:3626:52
8:39
+0:03
20M
20.00 mi13:02:012:33:437:4112:08
8:56
+0:17
21M
21.00 mi13:12:092:43:517:4810:08
10:08
+1:12
35K
21.75 mi13:18:572:50:397:516:48
9:05
-1:03
23M
23.00 mi13:29:533:01:357:5410:56
8:44
-0:21
24M
24.00 mi13:39:323:11:147:589:39
9:39
+0:55
40K
24.85 mi13:47:513:19:338:028:19
9:44
+0:05
25.2M
25.20 mi13:50:593:22:418:033:08
9:05
-0:39
Finish
26.22 mi13:59:203:31:028:038:21
8:12
-0:53

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

6:44 /mi

Average Pace

8:03 /mi

Slowest Pace

10:08 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:33:53

44% of race

Time at Steady Pace

1:29:03

42% of race

Time at Slower Pace

28:06

13% of race

Average Pace: 8:03 /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 mi10:49:1320:556:4420:55
6:44
#5744
10K
6.21 mi11:10:4142:236:4921:28
6:55
#6507
15K
9.32 mi11:33:111:04:536:5822:30
7:15
#7510
20K
12.43 mi11:57:041:28:467:0923:53
7:41
#8488
Half
13.11 mi12:02:111:33:537:105:07
7:30
#8646
25K
15.53 mi12:23:011:54:437:2320:50
8:36
#10311
30K
18.64 mi12:49:532:21:357:3626:52
8:39
#11393
20M
20.00 mi13:02:012:33:437:4112:08
8:56
#11768
21M
21.00 mi13:12:092:43:517:4810:08
10:08
#12325
35K
21.75 mi13:18:572:50:397:516:48
9:05
#12591
23M
23.00 mi13:29:533:01:357:5410:56
8:44
#12725
24M
24.00 mi13:39:323:11:147:589:39
9:39
#13168
40K
24.85 mi13:47:513:19:338:028:19
9:44
#13471
25.2M
25.20 mi13:50:593:22:418:033:08
9:05
#13440
Finish
26.22 mi13:59:203:31:028:038:21
8:12
#13483
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi5744530653069483(Top 33%)7817(Top 49%)7817(Top 392%)
10K6.21 mi3.10 mi6507-7635922-6165922-6167306(Top 26%)6515(Top 40%)6515(Top 326%)
15K9.32 mi3.11 mi7510-10036651-7296651-7299483(Top 33%)7817(Top 49%)7817(Top 392%)
20K12.43 mi3.11 mi8488-9787252-6017252-60112280(Top 43%)9094(Top 56%)9094(Top 456%)
Half13.11 mi0.68 mi8646-1587342-907342-9011686(Top 41%)8896(Top 55%)8896(Top 446%)
25K15.53 mi2.42 mi10311-16658234-8928234-89217749(Top 62%)11417(Top 71%)11417(Top 572%)
30K18.64 mi3.11 mi11393-10828693-4598693-45915671(Top 55%)10358(Top 64%)10358(Top 519%)
20M20.00 mi1.36 mi11768-3758832-1398832-13916385(Top 58%)10520(Top 65%)10520(Top 527%)
21M21.00 mi1.00 mi12325-5579045-2139045-21318768(Top 66%)11494(Top 71%)11494(Top 576%)
35K21.75 mi0.75 mi12591-2669149-1049149-10418626(Top 66%)11304(Top 70%)11304(Top 566%)
23M23.00 mi1.25 mi12725-1349177-289177-2814712(Top 52%)9490(Top 59%)9490(Top 475%)
24M24.00 mi1.00 mi13168-4439332-1559332-15520168(Top 71%)11940(Top 74%)11940(Top 598%)
40K24.85 mi0.85 mi13471-3039454-1229454-12219551(Top 69%)11577(Top 72%)11577(Top 580%)
25.2M25.20 mi0.35 mi13440+319422+329422+3212241(Top 43%)8124(Top 50%)8124(Top 407%)
Finish26.22 mi1.02 mi13483-439422942214209(Top 50%)9119(Top 57%)9119(Top 457%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 33%
×21story building
+97ft-345ft

Overall

9483

Males

7817

M50-54

7817

5K→10K

3.1 - 6.2 mi

Top 26%
×5story building
+79ft-138ft

Overall

7306

Males

6515

M50-54

6515

10K→15K

6.2 - 9.3 mi

Top 33%
×3story building
+67ft-78ft

Overall

9483

Males

7817

M50-54

7817

15K→20K

9.3 - 12.4 mi

Top 43%
×5story building
+106ft-86ft

Overall

12280

Males

9094

M50-54

9094

20K→Half

12.4 - 13.1 mi

Top 41%
×2story building
+19ft-37ft

Overall

11686

Males

8896

M50-54

8896

Half→25K

13.1 - 15.5 mi

Top 62%
×4story building
+66ft-88ft

Overall

17749

Males

11417

M50-54

11417

25K→30K

15.5 - 18.6 mi

Top 55%
×9story building
+181ft-148ft

Overall

15671

Males

10358

M50-54

10358

30K→20M

18.6 - 20.0 mi

Top 58%
×5story building
+64ft-50ft

Overall

16385

Males

10520

M50-54

10520

20M→21M

20.0 - 21.0 mi

Top 66%
×8story building
+106ft-24ft

Overall

18768

Males

11494

M50-54

11494

21M→35K

21.0 - 21.8 mi

Top 66%
×7story building
+17ft-86ft

Overall

18626

Males

11304

M50-54

11304

35K→23M

21.8 - 23.0 mi

Top 52%
×5story building
+23ft-63ft

Overall

14712

Males

9490

M50-54

9490

23M→24M

23.0 - 24.0 mi

Top 71%
×6story building
+12ft-82ft

Overall

20168

Males

11940

M50-54

11940

24M→40K

24.0 - 24.9 mi

Top 69%
×1story
+6ft-20ft

Overall

19551

Males

11577

M50-54

11577

40K→25.2M

24.9 - 25.2 mi

Top 43%
×1story
+13ft-16ft

Overall

12241

Males

8124

M50-54

8124

25.2M→Finish

25.2 - 26.2 mi

Top 50%
×2story building
+22ft-21ft

Overall

14209

Males

9119

M50-54

9119

Passing Analysis

Category:
Athletes Passed
460
Passed By
8196
Net Change
-7739
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5744
5K → 10K34797-763#5744#6507
10K → 15K181021-1003#6507#7510
15K → 20K21999-978#7510#8488
20K → Half5163-158#8488#8646
Half → 25K131676-1665#8646#10311
25K → 30K501131-1082#10311#11393
30K → 20M47422-375#11393#11768
20M → 21M23580-557#11768#12325
21M → 35K27293-266#12325#12591
35K → 23M73207-134#12591#12725
23M → 24M14457-443#12725#13168
24M → 40K21324-303#13168#13471
40K → 25.2M5322+31#13471#13440
25.2M → Finish61104-43#13440#13483
TOTALS4608196-7739
📊

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