Boston Marathon logo
BOSTON MARATHON 2025

Bryan Grullon

Bib: 16554•M

FL

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 28404
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
26:33
Rank: #20168
Start → 5K
26:33 | 8:33/mi
10K· 6.21 mi
53:53
Rank: #20755 (-587)
5K → 10K
27:20 | 8:48/mi
15K· 9.32 mi
1:22:26
Rank: #21507 (-752)
10K → 15K
28:33 | 9:11/mi
20K· 12.43 mi
1:51:44
Rank: #21896 (-389)
15K → 20K
29:18 | 9:26/mi
Half· 13.11 mi
1:58:30
Rank: #22100 (-204)
20K → Half
6:46 | 9:55/mi
25K· 15.53 mi
2:23:06
Rank: #22476 (-376)
Half → 25K
24:36 | 10:09/mi
30K· 18.64 mi
2:59:38
Rank: #23203 (-727)
25K → 30K
36:32 | 11:46/mi
20M
3:16:06
Rank: #23447 (-244)
30K → 20M
16:28 | 12:07/mi
21M
3:29:44
Rank: #23692 (-245)
20M → 21M
13:38 | 13:38/mi
35K· 21.75 mi
3:37:16
Rank: #23630 (+62)
21M → 35K
7:32 | 10:04/mi
23M
3:53:13
Rank: #23851 (-221)
35K → 23M
15:57 | 12:44/mi
24M
4:04:25
Rank: #23870 (-19)
23M → 24M
11:12 | 11:12/mi
40K· 24.85 mi
4:14:11
Rank: #23883 (-13)
24M → 40K
9:46 | 11:25/mi
25.2M
4:18:29
Rank: #23905 (-22)
40K → 25.2M
4:18 | 12:28/mi
Finish· 26.22 mi
4:28:53
Rank: #23910 (-5)
25.2M → Finish
10:24 | 10:12/mi

The Course

Is this your race?

Claim it — unlock a deeper AI report on this race, free

A personalized Race Performance Report that goes beyond this page — emailed to you, built from your real splits.

Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:58:30
Pace9:02 /mi
2nd Half
Distance13.11 mi
Time2:30:23
Pace11:28 /mi
📊Positive Split: 26.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:00:1526:338:3326:33
8:33
-
10K
6.21 mi11:27:3553:538:4027:20
8:48
+0:15
15K
9.32 mi11:56:081:22:268:5128:33
9:11
+0:23
20K
12.43 mi12:25:261:51:448:5929:18
9:26
+0:15
Half
13.11 mi12:32:121:58:309:026:46
9:55
+0:29
25K
15.53 mi12:56:482:23:069:1324:36
10:09
+0:14
30K
18.64 mi13:33:202:59:389:3836:32
11:46
+1:37
20M
20.00 mi13:49:483:16:069:4816:28
12:07
+0:21
21M
21.00 mi14:03:263:29:449:5913:38
13:38
+1:31
35K
21.75 mi14:10:583:37:169:597:32
10:04
-3:34
23M
23.00 mi14:26:553:53:1310:0815:57
12:44
+2:40
24M
24.00 mi14:38:074:04:2510:1111:12
11:12
-1:32
40K
24.85 mi14:47:534:14:1110:149:46
11:25
+0:13
25.2M
25.20 mi14:52:114:18:2910:154:18
12:28
+1:03
Finish
26.22 mi15:02:354:28:5310:1610:24
10:12
-2:16

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

8:33 /mi

Average Pace

10:16 /mi

Slowest Pace

13:38 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:51:44

42% of race

Time at Steady Pace

49:18

18% of race

Time at Slower Pace

1:47:51

40% of race

Average Pace: 10:15 /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 mi11:00:1526:338:3326:33
8:33
#20168
10K
6.21 mi11:27:3553:538:4027:20
8:48
#20755
15K
9.32 mi11:56:081:22:268:5128:33
9:11
#21507
20K
12.43 mi12:25:261:51:448:5929:18
9:26
#21896
Half
13.11 mi12:32:121:58:309:026:46
9:55
#22100
25K
15.53 mi12:56:482:23:069:1324:36
10:09
#22476
30K
18.64 mi13:33:202:59:389:3836:32
11:46
#23203
20M
20.00 mi13:49:483:16:069:4816:28
12:07
#23447
21M
21.00 mi14:03:263:29:449:5913:38
13:38
#23692
35K
21.75 mi14:10:583:37:169:597:32
10:04
#23630
23M
23.00 mi14:26:553:53:1310:0815:57
12:44
#23851
24M
24.00 mi14:38:074:04:2510:1111:12
11:12
#23870
40K
24.85 mi14:47:534:14:1110:149:46
11:25
#23883
25.2M
25.20 mi14:52:114:18:2910:154:18
12:28
#23905
Finish
26.22 mi15:02:354:28:5310:1610:24
10:12
#23910
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi20168125151251522830(Top 80%)13760(Top 85%)13760(Top 244%)
10K6.21 mi3.10 mi20755-58712783-26812783-26821391(Top 75%)13086(Top 81%)13086(Top 232%)
15K9.32 mi3.11 mi21507-75213141-35813141-35822830(Top 80%)13760(Top 85%)13760(Top 244%)
20K12.43 mi3.11 mi21896-38913291-15013291-15022675(Top 80%)13652(Top 85%)13652(Top 242%)
Half13.11 mi0.68 mi22100-20413390-9913390-9924643(Top 87%)14495(Top 90%)14495(Top 257%)
25K15.53 mi2.42 mi22476-37613562-17213562-17223600(Top 83%)14008(Top 87%)14008(Top 248%)
30K18.64 mi3.11 mi23203-72713845-28313845-28325236(Top 89%)14648(Top 91%)14648(Top 260%)
20M20.00 mi1.36 mi23447-24413941-9613941-9625429(Top 90%)14647(Top 91%)14647(Top 260%)
21M21.00 mi1.00 mi23692-24514027-8614027-8625807(Top 91%)14791(Top 92%)14791(Top 262%)
35K21.75 mi0.75 mi23630+6213992+3513992+3522098(Top 78%)12961(Top 80%)12961(Top 230%)
23M23.00 mi1.25 mi23851-22114070-7814070-7826086(Top 92%)14884(Top 92%)14884(Top 264%)
24M24.00 mi1.00 mi23870-1914068+214068+224385(Top 86%)14009(Top 87%)14009(Top 248%)
40K24.85 mi0.85 mi23883-1314065+314065+323993(Top 84%)13770(Top 86%)13770(Top 244%)
25.2M25.20 mi0.35 mi23905-2214069-414069-424128(Top 85%)13831(Top 86%)13831(Top 245%)
Finish26.22 mi1.02 mi23910-514055+1414055+1423538(Top 83%)13536(Top 84%)13536(Top 240%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 80%
×21stories
+97ft-345ft

Overall

22830

Males

13760

M18-39

13760

5K→10K

3.1 - 6.2 mi

Top 75%
×5stories
+79ft-138ft

Overall

21391

Males

13086

M18-39

13086

10K→15K

6.2 - 9.3 mi

Top 80%
×3stories
+67ft-78ft

Overall

22830

Males

13760

M18-39

13760

15K→20K

9.3 - 12.4 mi

Top 80%
×5stories
+106ft-86ft

Overall

22675

Males

13652

M18-39

13652

20K→Half

12.4 - 13.1 mi

Top 87%
×2stories
+19ft-37ft

Overall

24643

Males

14495

M18-39

14495

Half→25K

13.1 - 15.5 mi

Top 83%
×4stories
+66ft-88ft

Overall

23600

Males

14008

M18-39

14008

25K→30K

15.5 - 18.6 mi

Top 89%
×9stories
+181ft-148ft

Overall

25236

Males

14648

M18-39

14648

30K→20M

18.6 - 20.0 mi

Top 90%
×5stories
+64ft-50ft

Overall

25429

Males

14647

M18-39

14647

20M→21M

20.0 - 21.0 mi

Top 91%
×8stories
+106ft-24ft

Overall

25807

Males

14791

M18-39

14791

21M→35K

21.0 - 21.8 mi

Top 78%
×7stories
+17ft-86ft

Overall

22098

Males

12961

M18-39

12961

35K→23M

21.8 - 23.0 mi

Top 92%
×5stories
+23ft-63ft

Overall

26086

Males

14884

M18-39

14884

23M→24M

23.0 - 24.0 mi

Top 86%
×6stories
+12ft-82ft

Overall

24385

Males

14009

M18-39

14009

24M→40K

24.0 - 24.9 mi

Top 84%
×1story
+6ft-20ft

Overall

23993

Males

13770

M18-39

13770

40K→25.2M

24.9 - 25.2 mi

Top 85%
×1story
+13ft-16ft

Overall

24128

Males

13831

M18-39

13831

25.2M→Finish

25.2 - 26.2 mi

Top 83%
×2stories
+22ft-21ft

Overall

23538

Males

13536

M18-39

13536

Passing Analysis

Category:
Athletes Passed
611
Passed By
4353
Net Change
-3742
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#20168
5K → 10K100687-587#20168#20755
10K → 15K50802-752#20755#21507
15K → 20K96485-389#21507#21896
20K → Half6210-204#21896#22100
Half → 25K48424-376#22100#22476
25K → 30K34761-727#22476#23203
30K → 20M28272-244#23203#23447
20M → 21M21266-245#23447#23692
21M → 35K7917+62#23692#23630
35K → 23M25246-221#23630#23851
23M → 24M3251-19#23851#23870
24M → 40K4154-13#23870#23883
40K → 25.2M1335-22#23883#23905
25.2M → Finish3843-5#23905#23910
TOTALS6114353-3742
📊

Passing Visuals

Category:
Loading...

🔥Passing Intensity

Loading...

🔄Passing Circle

Loading...

🌊Position Flow

Loading...

🏃Race Lanes

Loading...

Upload your GPX file

Supports Garmin, Apple Watch, Polar, Suunto, COROS, Strava, and other apps

.gpx files up to 10MB

Export Track Data

Download your race performance as a GPX or TCX file to import into Strava, Garmin Connect, or other fitness apps.

Questions or issues regarding timing data?

If you notice any discrepancies in your timing data or have questions about your results, our support team can help.

Contact Race Support
Share Feedback

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing