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BOSTON MARATHON 2025

Andrew Grosso

Bib: 11121•M

NY

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 44%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:53
Rank: #8156
Start → 5K
7:03/mi
21:53 split
10K· 6.21 mi
43:34
Rank: #7934 (+222)
5K → 10K
6:59/mi
21:41 split
15K· 9.32 mi
1:05:16
Rank: #7767 (+167)
10K → 15K
6:59/mi
21:42 split
20K· 12.43 mi
1:28:11
Rank: #8158 (-391)
15K → 20K
7:23/mi
22:55 split
Half· 13.11 mi
1:33:19
Rank: #8293 (-135)
20K → Half
7:31/mi
5:08 split
25K· 15.53 mi
1:53:18
Rank: #9519 (-1226)
Half → 25K
8:15/mi
19:59 split
30K· 18.64 mi
2:19:50
Rank: #10606 (-1087)
25K → 30K
8:32/mi
26:32 split
20M
2:31:37
Rank: #10933 (-327)
30K → 20M
8:40/mi
11:47 split
21M
2:40:36
Rank: #11052 (-119)
20M → 21M
8:59/mi
8:59 split
35K· 21.75 mi
2:46:49
Rank: #11164 (-112)
21M → 35K
8:19/mi
6:13 split
23M
2:57:54
Rank: #11435 (-271)
35K → 23M
8:51/mi
11:05 split
24M
3:06:46
Rank: #11692 (-257)
23M → 24M
8:52/mi
8:52 split
40K· 24.85 mi
3:13:31
Rank: #11559 (+133)
24M → 40K
7:54/mi
6:45 split
25.2M
3:16:24
Rank: #11478 (+81)
40K → 25.2M
8:22/mi
2:53 split
Finish· 26.22 mi
3:23:58
Rank: #11325 (+153)
25.2M → Finish
7:26/mi
7:34 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:33:19
Pace7:07 /mi
2nd Half
Distance13.11 mi
Time1:50:39
Pace8:26 /mi
📊Positive Split: 18.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:49:1421:537:0321:53
7:03
-
10K
6.21 mi11:10:5543:347:0121:41
6:59
-0:04
15K
9.32 mi11:32:371:05:167:0021:42
6:59
0:00
20K
12.43 mi11:55:321:28:117:0622:55
7:23
+0:24
Half
13.11 mi12:00:401:33:197:075:08
7:31
+0:08
25K
15.53 mi12:20:391:53:187:1819:59
8:15
+0:44
30K
18.64 mi12:47:112:19:507:3026:32
8:32
+0:17
20M
20.00 mi12:58:582:31:377:3511:47
8:40
+0:08
21M
21.00 mi13:07:572:40:367:398:59
8:59
+0:19
35K
21.75 mi13:14:102:46:497:406:13
8:19
-0:40
23M
23.00 mi13:25:152:57:547:4411:05
8:51
+0:32
24M
24.00 mi13:34:073:06:467:478:52
8:52
+0:01
40K
24.85 mi13:40:523:13:317:476:45
7:54
-0:58
25.2M
25.20 mi13:43:453:16:247:482:53
8:22
+0:28
Finish
26.22 mi13:51:193:23:587:477:34
7:26
-0:56

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

6:59 /mi

Average Pace

7:47 /mi

Slowest Pace

8:59 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:40:53

49% of race

Time at Steady Pace

1:02:22

31% of race

Time at Slower Pace

40:43

20% 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 mi10:49:1421:537:0321:53
7:03
#8156
10K
6.21 mi11:10:5543:347:0121:41
6:59
#7934
15K
9.32 mi11:32:371:05:167:0021:42
6:59
#7767
20K
12.43 mi11:55:321:28:117:0622:55
7:23
#8158
Half
13.11 mi12:00:401:33:197:075:08
7:31
#8293
25K
15.53 mi12:20:391:53:187:1819:59
8:15
#9519
30K
18.64 mi12:47:112:19:507:3026:32
8:32
#10606
20M
20.00 mi12:58:582:31:377:3511:47
8:40
#10933
21M
21.00 mi13:07:572:40:367:398:59
8:59
#11052
35K
21.75 mi13:14:102:46:497:406:13
8:19
#11164
23M
23.00 mi13:25:152:57:547:4411:05
8:51
#11435
24M
24.00 mi13:34:073:06:467:478:52
8:52
#11692
40K
24.85 mi13:40:523:13:317:476:45
7:54
#11559
25.2M
25.20 mi13:43:453:16:247:482:53
8:22
#11478
Finish
26.22 mi13:51:193:23:587:477:34
7:26
#11325
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi8156710371037524(Top 26%)6633(Top 41%)6633(Top 332%)
10K6.21 mi3.10 mi7934+2226939+1646939+1647800(Top 27%)6843(Top 42%)6843(Top 343%)
15K9.32 mi3.11 mi7767+1676829+1106829+1107524(Top 26%)6633(Top 41%)6633(Top 332%)
20K12.43 mi3.11 mi8158-3917056-2277056-2279686(Top 34%)7841(Top 49%)7841(Top 393%)
Half13.11 mi0.68 mi8293-1357126-707126-7011851(Top 42%)8959(Top 56%)8959(Top 449%)
25K15.53 mi2.42 mi9519-12267802-6767802-67615551(Top 55%)10450(Top 65%)10450(Top 524%)
30K18.64 mi3.11 mi10606-10878319-5178319-51714996(Top 53%)10049(Top 62%)10049(Top 503%)
20M20.00 mi1.36 mi10933-3278431-1128431-11214849(Top 52%)9837(Top 61%)9837(Top 493%)
21M21.00 mi1.00 mi11052-1198455-248455-2413369(Top 47%)9028(Top 56%)9028(Top 452%)
35K21.75 mi0.75 mi11164-1128479-248479-2414254(Top 50%)9385(Top 58%)9385(Top 470%)
23M23.00 mi1.25 mi11435-2718555-768555-7615377(Top 54%)9797(Top 61%)9797(Top 491%)
24M24.00 mi1.00 mi11692-2578645-908645-9016641(Top 59%)10306(Top 64%)10306(Top 516%)
40K24.85 mi0.85 mi11559+1338553+928553+929419(Top 33%)6759(Top 42%)6759(Top 339%)
25.2M25.20 mi0.35 mi11478+818493+608493+607962(Top 28%)5903(Top 37%)5903(Top 296%)
Finish26.22 mi1.02 mi11325+1538382+1118382+1118667(Top 31%)6273(Top 39%)6273(Top 314%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 26%
×21story building
+97ft-345ft

Overall

7524

Males

6633

M50-54

6633

5K→10K

3.1 - 6.2 mi

Top 27%
×5story building
+79ft-138ft

Overall

7800

Males

6843

M50-54

6843

10K→15K

6.2 - 9.3 mi

Top 26%
×3story building
+67ft-78ft

Overall

7524

Males

6633

M50-54

6633

15K→20K

9.3 - 12.4 mi

Top 34%
×5story building
+106ft-86ft

Overall

9686

Males

7841

M50-54

7841

20K→Half

12.4 - 13.1 mi

Top 42%
×2story building
+19ft-37ft

Overall

11851

Males

8959

M50-54

8959

Half→25K

13.1 - 15.5 mi

Top 55%
×4story building
+66ft-88ft

Overall

15551

Males

10450

M50-54

10450

25K→30K

15.5 - 18.6 mi

Top 53%
×9story building
+181ft-148ft

Overall

14996

Males

10049

M50-54

10049

30K→20M

18.6 - 20.0 mi

Top 52%
×5story building
+64ft-50ft

Overall

14849

Males

9837

M50-54

9837

20M→21M

20.0 - 21.0 mi

Top 47%
×8story building
+106ft-24ft

Overall

13369

Males

9028

M50-54

9028

21M→35K

21.0 - 21.8 mi

Top 50%
×7story building
+17ft-86ft

Overall

14254

Males

9385

M50-54

9385

35K→23M

21.8 - 23.0 mi

Top 54%
×5story building
+23ft-63ft

Overall

15377

Males

9797

M50-54

9797

23M→24M

23.0 - 24.0 mi

Top 59%
×6story building
+12ft-82ft

Overall

16641

Males

10306

M50-54

10306

24M→40K

24.0 - 24.9 mi

Top 33%
×1story
+6ft-20ft

Overall

9419

Males

6759

M50-54

6759

40K→25.2M

24.9 - 25.2 mi

Top 28%
×1story
+13ft-16ft

Overall

7962

Males

5903

M50-54

5903

25.2M→Finish

25.2 - 26.2 mi

Top 31%
×2story building
+22ft-21ft

Overall

8667

Males

6273

M50-54

6273

Passing Analysis

Category:
Athletes Passed
1351
Passed By
4518
Net Change
-3169
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#8156
5K → 10K350128+222#8156#7934
10K → 15K22558+167#7934#7767
15K → 20K57448-391#7767#8158
20K → Half6141-135#8158#8293
Half → 25K221248-1226#8293#9519
25K → 30K471132-1087#9519#10606
30K → 20M48375-327#10606#10933
20M → 21M68187-119#10933#11052
21M → 35K29141-112#11052#11164
35K → 23M47318-271#11164#11435
23M → 24M40297-257#11435#11692
24M → 40K15421+133#11692#11559
40K → 25.2M876+81#11559#11478
25.2M → Finish17118+153#11478#11325
TOTALS13514518-3169
📊

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