Boston Marathon logo
BOSTON MARATHON 2025

Brett Giampa

Bib: 5189•M

MI

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 28404
Top 12%
Gender (Male)
#0 / 16105
Top 20%
Division (M18-39)
#0 / 5642
Top 44%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
19:12
Rank: #1752
Start → 5K
6:11/mi
19:12 split
10K· 6.21 mi
38:18
Rank: #1699 (+53)
5K → 10K
6:09/mi
19:06 split
15K· 9.32 mi
57:20
Rank: #1617 (+82)
10K → 15K
6:08/mi
19:02 split
20K· 12.43 mi
1:16:37
Rank: #1600 (+17)
15K → 20K
6:12/mi
19:17 split
Half· 13.11 mi
1:20:53
Rank: #1628 (-28)
20K → Half
6:15/mi
4:16 split
25K· 15.53 mi
1:36:24
Rank: #1705 (-77)
Half → 25K
6:24/mi
15:31 split
30K· 18.64 mi
1:58:23
Rank: #2187 (-482)
25K → 30K
7:05/mi
21:59 split
20M
2:10:48
Rank: #3102 (-915)
30K → 20M
9:08/mi
12:25 split
21M
2:18:45
Rank: #3278 (-176)
20M → 21M
7:57/mi
7:57 split
35K· 21.75 mi
2:24:04
Rank: #3350 (-72)
21M → 35K
7:06/mi
5:19 split
23M
2:33:17
Rank: #3435 (-85)
35K → 23M
7:22/mi
9:13 split
24M
2:40:25
Rank: #3494 (-59)
23M → 24M
7:08/mi
7:08 split
40K· 24.85 mi
2:46:29
Rank: #3497 (-3)
24M → 40K
7:06/mi
6:04 split
25.2M
2:49:06
Rank: #3485 (+12)
40K → 25.2M
7:35/mi
2:37 split
Finish· 26.22 mi
2:55:58
Rank: #3478 (+7)
25.2M → Finish
6:44/mi
6:52 split

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
Time1:20:53
Pace6:10 /mi
2nd Half
Distance13.11 mi
Time1:35:05
Pace7:15 /mi
📊Positive Split: 17.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:23:0719:126:1119:12
6:11
-
10K
6.21 mi10:42:1338:186:1019:06
6:09
-0:02
15K
9.32 mi11:01:1557:206:0919:02
6:08
-0:01
20K
12.43 mi11:20:321:16:376:1019:17
6:12
+0:04
Half
13.11 mi11:24:481:20:536:104:16
6:15
+0:03
25K
15.53 mi11:40:191:36:246:1215:31
6:24
+0:09
30K
18.64 mi12:02:181:58:236:2121:59
7:05
+0:41
20M
20.00 mi12:14:432:10:486:3212:25
9:08
+2:03
21M
21.00 mi12:22:402:18:456:367:57
7:57
-1:11
35K
21.75 mi12:27:592:24:046:375:19
7:06
-0:51
23M
23.00 mi12:37:122:33:176:409:13
7:22
+0:16
24M
24.00 mi12:44:202:40:256:417:08
7:08
-0:14
40K
24.85 mi12:50:242:46:296:426:04
7:06
-0:02
25.2M
25.20 mi12:53:012:49:066:432:37
7:35
+0:29
Finish
26.22 mi12:59:532:55:586:436:52
6:44
-0:51

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

6:08 /mi

Average Pace

6:43 /mi

Slowest Pace

9:08 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:36:24

55% of race

Time at Steady Pace

56:35

32% of race

Time at Slower Pace

22:59

13% of race

Average Pace: 6:43 /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 mi10:23:0719:126:1119:12
6:11
#1752
10K
6.21 mi10:42:1338:186:1019:06
6:09
#1699
15K
9.32 mi11:01:1557:206:0919:02
6:08
#1617
20K
12.43 mi11:20:321:16:376:1019:17
6:12
#1600
Half
13.11 mi11:24:481:20:536:104:16
6:15
#1628
25K
15.53 mi11:40:191:36:246:1215:31
6:24
#1705
30K
18.64 mi12:02:181:58:236:2121:59
7:05
#2187
20M
20.00 mi12:14:432:10:486:3212:25
9:08
#3102
21M
21.00 mi12:22:402:18:456:367:57
7:57
#3278
35K
21.75 mi12:27:592:24:046:375:19
7:06
#3350
23M
23.00 mi12:37:122:33:176:409:13
7:22
#3435
24M
24.00 mi12:44:202:40:256:417:08
7:08
#3494
40K
24.85 mi12:50:242:46:296:426:04
7:06
#3497
25.2M
25.20 mi12:53:012:49:066:432:37
7:35
#3485
Finish
26.22 mi12:59:532:55:586:436:52
6:44
#3478
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi1752166416641509(Top 5%)1436(Top 9%)1436(Top 25%)
10K6.21 mi3.10 mi1699+531617+471617+471670(Top 6%)1590(Top 10%)1590(Top 28%)
15K9.32 mi3.11 mi1617+821539+781539+781509(Top 5%)1436(Top 9%)1436(Top 25%)
20K12.43 mi3.11 mi1600+171518+211518+211610(Top 6%)1529(Top 9%)1529(Top 27%)
Half13.11 mi0.68 mi1628-281544-261544-262306(Top 8%)2207(Top 14%)2207(Top 39%)
25K15.53 mi2.42 mi1705-771619-751619-752380(Top 8%)2265(Top 14%)2265(Top 40%)
30K18.64 mi3.11 mi2187-4822084-4652084-4655179(Top 18%)4687(Top 29%)4687(Top 83%)
20M20.00 mi1.36 mi3102-9152943-8592943-85917463(Top 61%)11011(Top 68%)11011(Top 195%)
21M21.00 mi1.00 mi3278-1763100-1573100-1577060(Top 25%)5711(Top 35%)5711(Top 101%)
35K21.75 mi0.75 mi3350-723163-633163-636007(Top 21%)5064(Top 31%)5064(Top 90%)
23M23.00 mi1.25 mi3435-853237-743237-745805(Top 20%)4853(Top 30%)4853(Top 86%)
24M24.00 mi1.00 mi3494-593279-423279-425401(Top 19%)4535(Top 28%)4535(Top 80%)
40K24.85 mi0.85 mi3497-33276+33276+34446(Top 16%)3814(Top 24%)3814(Top 68%)
25.2M25.20 mi0.35 mi3485+123261+153261+153833(Top 13%)3315(Top 21%)3315(Top 59%)
Finish26.22 mi1.02 mi3478+73249+123249+124128(Top 15%)3531(Top 22%)3531(Top 63%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 5%
×21story building
+97ft-345ft

Overall

1509

Males

1436

M18-39

1436

5K→10K

3.1 - 6.2 mi

Top 6%
×5story building
+79ft-138ft

Overall

1670

Males

1590

M18-39

1590

10K→15K

6.2 - 9.3 mi

Top 5%
×3story building
+67ft-78ft

Overall

1509

Males

1436

M18-39

1436

15K→20K

9.3 - 12.4 mi

Top 6%
×5story building
+106ft-86ft

Overall

1610

Males

1529

M18-39

1529

20K→Half

12.4 - 13.1 mi

Top 8%
×2story building
+19ft-37ft

Overall

2306

Males

2207

M18-39

2207

Half→25K

13.1 - 15.5 mi

Top 8%
×4story building
+66ft-88ft

Overall

2380

Males

2265

M18-39

2265

25K→30K

15.5 - 18.6 mi

Top 18%
×9story building
+181ft-148ft

Overall

5179

Males

4687

M18-39

4687

30K→20M

18.6 - 20.0 mi

Top 61%
×5story building
+64ft-50ft

Overall

17463

Males

11011

M18-39

11011

20M→21M

20.0 - 21.0 mi

Top 25%
×8story building
+106ft-24ft

Overall

7060

Males

5711

M18-39

5711

21M→35K

21.0 - 21.8 mi

Top 21%
×7story building
+17ft-86ft

Overall

6007

Males

5064

M18-39

5064

35K→23M

21.8 - 23.0 mi

Top 20%
×5story building
+23ft-63ft

Overall

5805

Males

4853

M18-39

4853

23M→24M

23.0 - 24.0 mi

Top 19%
×6story building
+12ft-82ft

Overall

5401

Males

4535

M18-39

4535

24M→40K

24.0 - 24.9 mi

Top 16%
×1story
+6ft-20ft

Overall

4446

Males

3814

M18-39

3814

40K→25.2M

24.9 - 25.2 mi

Top 13%
×1story
+13ft-16ft

Overall

3833

Males

3315

M18-39

3315

25.2M→Finish

25.2 - 26.2 mi

Top 15%
×2story building
+22ft-21ft

Overall

4128

Males

3531

M18-39

3531

Passing Analysis

Category:
Athletes Passed
543
Passed By
2269
Net Change
-1726
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#1752
5K → 10K11259+53#1752#1699
10K → 15K10725+82#1699#1617
15K → 20K5841+17#1617#1600
20K → Half331-28#1600#1628
Half → 25K27104-77#1628#1705
25K → 30K10492-482#1705#2187
30K → 20M2917-915#2187#3102
20M → 21M16192-176#3102#3278
21M → 35K1789-72#3278#3350
35K → 23M40125-85#3350#3435
23M → 24M2988-59#3435#3494
24M → 40K4750-3#3494#3497
40K → 25.2M3119+12#3497#3485
25.2M → Finish4437+7#3485#3478
TOTALS5432269-1726
📊

Passing Visuals

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
Share Feedback

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing