Boston Marathon logo
BOSTON MARATHON 2025

Al Guido

Bib: 27698•M

CA

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

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
25:43
Rank: #18563
Start → 5K
25:43 | 8:17/mi
10K· 6.21 mi
50:12
Rank: #17098 (+1465)
5K → 10K
24:29 | 7:53/mi
15K· 9.32 mi
1:15:01
Rank: #16689 (+409)
10K → 15K
24:49 | 7:59/mi
20K· 12.43 mi
1:40:37
Rank: #16651 (+38)
15K → 20K
25:36 | 8:14/mi
Half· 13.11 mi
1:46:10
Rank: #16663 (-12)
20K → Half
5:33 | 8:08/mi
25K· 15.53 mi
2:05:57
Rank: #16370 (+293)
Half → 25K
19:47 | 8:10/mi
30K· 18.64 mi
2:32:41
Rank: #16154 (+216)
25K → 30K
26:44 | 8:36/mi
20M
2:44:28
Rank: #16026 (+128)
30K → 20M
11:47 | 8:40/mi
21M
2:53:39
Rank: #15871 (+155)
20M → 21M
9:11 | 9:11/mi
35K· 21.75 mi
2:59:57
Rank: #15787 (+84)
21M → 35K
6:18 | 8:25/mi
23M
3:11:18
Rank: #15796 (-9)
35K → 23M
11:21 | 9:04/mi
24M
3:20:01
Rank: #15786 (+10)
23M → 24M
8:43 | 8:43/mi
40K· 24.85 mi
3:27:31
Rank: #15735 (+51)
24M → 40K
7:30 | 8:46/mi
25.2M
3:30:58
Rank: #15749 (-14)
40K → 25.2M
3:27 | 10:00/mi
Finish· 26.22 mi
3:40:21
Rank: #15955 (-206)
25.2M → Finish
9:23 | 9:12/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
Time1:46:10
Pace8:06 /mi
2nd Half
Distance13.11 mi
Time1:54:11
Pace8:43 /mi
📊Positive Split: 7.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:41:4525:438:1725:43
8:17
-
10K
6.21 mi12:06:1450:128:0524:29
7:53
-0:24
15K
9.32 mi12:31:031:15:018:0324:49
7:59
+0:06
20K
12.43 mi12:56:391:40:378:0625:36
8:14
+0:15
Half
13.11 mi13:02:121:46:108:065:33
8:08
-0:06
25K
15.53 mi13:21:592:05:578:0619:47
8:10
+0:02
30K
18.64 mi13:48:432:32:418:1126:44
8:36
+0:26
20M
20.00 mi14:00:302:44:288:1311:47
8:40
+0:04
21M
21.00 mi14:09:412:53:398:169:11
9:11
+0:31
35K
21.75 mi14:15:592:59:578:166:18
8:25
-0:46
23M
23.00 mi14:27:203:11:188:1911:21
9:04
+0:39
24M
24.00 mi14:36:033:20:018:208:43
8:43
-0:21
40K
24.85 mi14:43:333:27:318:217:30
8:46
+0:03
25.2M
25.20 mi14:47:003:30:588:223:27
10:00
+1:14
Finish
26.22 mi14:56:233:40:218:259:23
9:12
-0:48

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

7:53 /mi

Average Pace

8:25 /mi

Slowest Pace

10:00 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:05:57

57% of race

Time at Steady Pace

1:01:02

28% of race

Time at Slower Pace

33:22

15% of race

Average Pace: 8:24 /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 mi11:41:4525:438:1725:43
8:17
#18563
10K
6.21 mi12:06:1450:128:0524:29
7:53
#17098
15K
9.32 mi12:31:031:15:018:0324:49
7:59
#16689
20K
12.43 mi12:56:391:40:378:0625:36
8:14
#16651
Half
13.11 mi13:02:121:46:108:065:33
8:08
#16663
25K
15.53 mi13:21:592:05:578:0619:47
8:10
#16370
30K
18.64 mi13:48:432:32:418:1126:44
8:36
#16154
20M
20.00 mi14:00:302:44:288:1311:47
8:40
#16026
21M
21.00 mi14:09:412:53:398:169:11
9:11
#15871
35K
21.75 mi14:15:592:59:578:166:18
8:25
#15787
23M
23.00 mi14:27:203:11:188:1911:21
9:04
#15796
24M
24.00 mi14:36:033:20:018:208:43
8:43
#15786
40K
24.85 mi14:43:333:27:318:217:30
8:46
#15735
25.2M
25.20 mi14:47:003:30:588:223:27
10:00
#15749
Finish
26.22 mi14:56:233:40:218:259:23
9:12
#15955
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi18563118411184115948(Top 56%)10788(Top 67%)10788(Top 452%)
10K6.21 mi3.10 mi17098+146511262+57911262+57915519(Top 55%)10631(Top 66%)10631(Top 446%)
15K9.32 mi3.11 mi16689+40911103+15911103+15915948(Top 56%)10788(Top 67%)10788(Top 452%)
20K12.43 mi3.11 mi16651+3811071+3211071+3216553(Top 58%)10986(Top 68%)10986(Top 460%)
Half13.11 mi0.68 mi16663-1211075-411075-416803(Top 59%)11098(Top 69%)11098(Top 465%)
25K15.53 mi2.42 mi16370+29310936+13910936+13915032(Top 53%)10242(Top 64%)10242(Top 429%)
30K18.64 mi3.11 mi16154+21610792+14410792+14415415(Top 54%)10241(Top 64%)10241(Top 429%)
20M20.00 mi1.36 mi16026+12810700+9210700+9214871(Top 52%)9859(Top 61%)9859(Top 413%)
21M21.00 mi1.00 mi15871+15510593+10710593+10714524(Top 51%)9584(Top 60%)9584(Top 402%)
35K21.75 mi0.75 mi15787+8410540+5310540+5314968(Top 53%)9717(Top 60%)9717(Top 407%)
23M23.00 mi1.25 mi15796-910508+3210508+3216607(Top 58%)10331(Top 64%)10331(Top 433%)
24M24.00 mi1.00 mi15786+1010482+2610482+2615826(Top 56%)9962(Top 62%)9962(Top 418%)
40K24.85 mi0.85 mi15735+5110443+3910443+3915012(Top 53%)9455(Top 59%)9455(Top 396%)
25.2M25.20 mi0.35 mi15749-1410435+810435+816993(Top 60%)10358(Top 64%)10358(Top 434%)
Finish26.22 mi1.02 mi15955-20610507-7210507-7219960(Top 70%)11781(Top 73%)11781(Top 494%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 56%
×21stories
+97ft-345ft

Overall

15948

Males

10788

M45-49

10788

5K→10K

3.1 - 6.2 mi

Top 55%
×5stories
+79ft-138ft

Overall

15519

Males

10631

M45-49

10631

10K→15K

6.2 - 9.3 mi

Top 56%
×3stories
+67ft-78ft

Overall

15948

Males

10788

M45-49

10788

15K→20K

9.3 - 12.4 mi

Top 58%
×5stories
+106ft-86ft

Overall

16553

Males

10986

M45-49

10986

20K→Half

12.4 - 13.1 mi

Top 59%
×2stories
+19ft-37ft

Overall

16803

Males

11098

M45-49

11098

Half→25K

13.1 - 15.5 mi

Top 53%
×4stories
+66ft-88ft

Overall

15032

Males

10242

M45-49

10242

25K→30K

15.5 - 18.6 mi

Top 54%
×9stories
+181ft-148ft

Overall

15415

Males

10241

M45-49

10241

30K→20M

18.6 - 20.0 mi

Top 52%
×5stories
+64ft-50ft

Overall

14871

Males

9859

M45-49

9859

20M→21M

20.0 - 21.0 mi

Top 51%
×8stories
+106ft-24ft

Overall

14524

Males

9584

M45-49

9584

21M→35K

21.0 - 21.8 mi

Top 53%
×7stories
+17ft-86ft

Overall

14968

Males

9717

M45-49

9717

35K→23M

21.8 - 23.0 mi

Top 58%
×5stories
+23ft-63ft

Overall

16607

Males

10331

M45-49

10331

23M→24M

23.0 - 24.0 mi

Top 56%
×6stories
+12ft-82ft

Overall

15826

Males

9962

M45-49

9962

24M→40K

24.0 - 24.9 mi

Top 53%
×1story
+6ft-20ft

Overall

15012

Males

9455

M45-49

9455

40K→25.2M

24.9 - 25.2 mi

Top 60%
×1story
+13ft-16ft

Overall

16993

Males

10358

M45-49

10358

25.2M→Finish

25.2 - 26.2 mi

Top 70%
×2stories
+22ft-21ft

Overall

19960

Males

11781

M45-49

11781

Passing Analysis

Category:
Athletes Passed
3638
Passed By
1030
Net Change
+2608
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18563
5K → 10K147914+1465#18563#17098
10K → 15K45546+409#17098#16689
15K → 20K228190+38#16689#16651
20K → Half3042-12#16651#16663
Half → 25K31320+293#16663#16370
25K → 30K333117+216#16370#16154
30K → 20M17446+128#16154#16026
20M → 21M19237+155#16026#15871
21M → 35K11026+84#15871#15787
35K → 23M105114-9#15787#15796
23M → 24M6858+10#15796#15786
24M → 40K10150+51#15786#15735
40K → 25.2M3044-14#15735#15749
25.2M → Finish20226-206#15749#15955
TOTALS36381030+2608
📊

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