Boston Marathon logo
BOSTON MARATHON 2025

Guillermo Burroni

Bib: 11108 M AR

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 28404
Top 23%
Gender (Male)
#0 / 16105
Top 35%
Masters (Masters Men)
#0 / 10463
Top 22%
Division (M45-49)
#0 / 2386
Top 30%
Race Day Weather
50°/40°F
broken clouds

Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
469 ft elev
5K· 3.11 mi
6:54/mi
21:27
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
6:50/mi
42:41
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
6:51/mi
1:03:57
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
6:59/mi
1:25:39
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
6:46/mi
1:30:16
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
6:57/mi
1:47:06
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
7:13/mi
2:09:31
↑ 181↓ 1480.2%
138 ft elev
20M
7:49/mi
2:20:09
↑ 64↓ 500.2%
148 ft elev
21M
7:49/mi
2:27:58
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
7:37/mi
2:33:40
↑ 17↓ 861.7%
156 ft elev
23M
7:38/mi
2:43:14
↑ 23↓ 630.6%
116 ft elev
24M
7:39/mi
2:50:53
↓ 821.3%
34 ft elev
40K· 24.85 mi
7:50/mi
2:57:35
↓ 200.3%
20 ft elev
25.2M
8:25/mi
3:00:29
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
7:42/mi
3:08:20
↑ 22↓ 21
17 ft elev
Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent

The Course

Half Splits

1st Half· via Half
1:30:166:53 /mi⚡ faster
2nd Half
1:38:047:29 /mi+8.6%
Positive split — 8.6% slower in the second half
Is this your race?

Your race, unpacked

See your splits, ranks & AI insights.

Checkpoint Splits

CheckpointTimeAvg PaceSegment LengthSegment TimeSegment PaceTrendDiff
5K
21:276:543.11 mi21:27
6:54
-
10K
42:416:523.10 mi21:14
6:50
-0:04
15K
1:03:576:523.11 mi21:16
6:51
+0:01
20K
1:25:396:543.11 mi21:42
6:59
+0:08
Half(13.11 mi)
1:30:166:530.68 mi4:37
6:46
-0:13
25K
1:47:066:542.42 mi16:50
6:57
+0:11
30K
2:09:316:573.11 mi22:25
7:13
+0:16
20M
2:20:097:001.36 mi10:38
7:49
+0:36
21M
2:27:587:031.00 mi7:49
7:49
0:00
35K
2:33:407:040.75 mi5:42
7:37
-0:12
23M
2:43:147:061.25 mi9:34
7:38
+0:01
24M
2:50:537:071.00 mi7:39
7:39
+0:01
40K
2:57:357:090.85 mi6:42
7:50
+0:11
25.2M
3:00:297:100.35 mi2:54
8:25
+0:35
Finish(26.22 mi)
3:08:207:111.02 mi7:51
7:42
-0:43
Trend:
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoints & Pacing

Pace Line

Fastest Pace

6:46 /mi

Average Pace

7:11 /mi

Slowest Pace

8:25 /mi

Loading chart...
Fastest
Middle
Slowest
Average

Segments

Time at Faster Pace

2:09:31

69% of race

Time at Steady Pace

55:55

30% of race

Time at Slower Pace

2:54

2% of race

Average Pace: 7:11 /mi

Loading chart...
Faster pace (< avg)
Steady pace (≈ avg)
Slower pace (> avg)

Heatmap

Loading...
0mi6.6mi13.1mi19.7mi26.2mi
Pace:
Faster
Steady
Slower

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi710263816381652458865886
10K6.21 mi3.10 mi6928+1746242+1396242+139673360716071
15K9.32 mi3.11 mi6762+1666096+1466096+146652458865886
20K12.43 mi3.11 mi6767-56103-76103-7678360446044
Half13.11 mi0.68 mi6719+486064+396064+39586653535353
25K15.53 mi2.42 mi6531+1885892+1725892+172594353565356
30K18.64 mi3.11 mi6311+2205681+2115681+211599253045304
20M20.00 mi1.36 mi6430-1195760-795760-79916070737073
21M21.00 mi1.00 mi6358+725689+715689+71632852685268
35K21.75 mi0.75 mi6411-535712-235712-23941570587058
23M23.00 mi1.25 mi6388+235671+415671+41749858675867
24M24.00 mi1.00 mi6434-465684-135684-13873865056505
40K24.85 mi0.85 mi6458-245675+95675+9897865026502
25.2M25.20 mi0.35 mi6465-75665+105665+10817559995999
Finish26.22 mi1.02 mi6579-1145707-425707-421068473397339

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 23%
×21story building
+97ft-345ft

Overall

6524

Males

5886

M45-49

5886

5K→10K

3.1 - 6.2 mi

Top 24%
×5story building
+79ft-138ft

Overall

6733

Males

6071

M45-49

6071

10K→15K

6.2 - 9.3 mi

Top 23%
×3story building
+67ft-78ft

Overall

6524

Males

5886

M45-49

5886

15K→20K

9.3 - 12.4 mi

Top 24%
×5story building
+106ft-86ft

Overall

6783

Males

6044

M45-49

6044

20K→Half

12.4 - 13.1 mi

Top 21%
×2story building
+19ft-37ft

Overall

5866

Males

5353

M45-49

5353

Half→25K

13.1 - 15.5 mi

Top 21%
×4story building
+66ft-88ft

Overall

5943

Males

5356

M45-49

5356

25K→30K

15.5 - 18.6 mi

Top 21%
×9story building
+181ft-148ft

Overall

5992

Males

5304

M45-49

5304

30K→20M

18.6 - 20.0 mi

Top 32%
×5story building
+64ft-50ft

Overall

9160

Males

7073

M45-49

7073

20M→21M

20.0 - 21.0 mi

Top 22%
×8story building
+106ft-24ft

Overall

6328

Males

5268

M45-49

5268

21M→35K

21.0 - 21.8 mi

Top 33%
×7story building
+17ft-86ft

Overall

9415

Males

7058

M45-49

7058

35K→23M

21.8 - 23.0 mi

Top 26%
×5story building
+23ft-63ft

Overall

7498

Males

5867

M45-49

5867

23M→24M

23.0 - 24.0 mi

Top 31%
×6story building
+12ft-82ft

Overall

8738

Males

6505

M45-49

6505

24M→40K

24.0 - 24.9 mi

Top 32%
×1story
+6ft-20ft

Overall

8978

Males

6502

M45-49

6502

40K→25.2M

24.9 - 25.2 mi

Top 29%
×1story
+13ft-16ft

Overall

8175

Males

5999

M45-49

5999

25.2M→Finish

25.2 - 26.2 mi

Top 38%
×2story building
+22ft-21ft

Overall

10684

Males

7339

M45-49

7339

Passing Analysis

Category:
Athletes Passed
1666
Passed By
1143
Net Change
+523
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#7102
5K → 10K286112+174#7102#6928
10K → 15K23771+166#6928#6762
15K → 20K125130-5#6762#6767
20K → Half5810+48#6767#6719
Half → 25K23042+188#6719#6531
25K → 30K28969+220#6531#6311
30K → 20M58177-119#6311#6430
20M → 21M10230+72#6430#6358
21M → 35K2780-53#6358#6411
35K → 23M9370+23#6411#6388
23M → 24M4793-46#6388#6434
24M → 40K4973-24#6434#6458
40K → 25.2M2330-7#6458#6465
25.2M → Finish42156-114#6465#6579
TOTALS16661143+523

Passing Charts

Category:
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

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing