Boston Marathon logo
BOSTON MARATHON 2025

Carl Kulo

Bib: 20389•M

NY

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M65-69)
#0 / 639
Top 35%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
8:27/mi
26:14
↑ 97↓ 3451.5%
10K· 6.21 mi
8:26/mi
52:27
↑ 79↓ 1380.4%
15K· 9.32 mi
8:34/mi
1:19:04
↑ 67↓ 78
20K· 12.43 mi
8:46/mi
1:46:17
↑ 106↓ 860.1%
Half· 13.11 mi
8:32/mi
1:52:06
↑ 19↓ 370.5%
25K· 15.53 mi
9:04/mi
2:14:04
↑ 66↓ 880.2%
30K· 18.64 mi
9:15/mi
2:42:48
↑ 181↓ 1480.2%
20M
9:17/mi
2:55:25
↑ 64↓ 500.2%
21M
10:51/mi
3:06:16
↑ 106↓ 241.6%
35K· 21.75 mi
8:55/mi
3:12:56
↑ 17↓ 861.7%
23M
9:17/mi
3:24:34
↑ 23↓ 630.6%
24M
9:45/mi
3:34:19
↓ 821.3%
40K· 24.85 mi
10:13/mi
3:43:03
↓ 200.3%
25.2M
11:01/mi
3:46:51
↑ 13↓ 160.2%
Finish· 26.22 mi
8:54/mi
3:55:55
↑ 22↓ 21

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
Time1:52:06
Pace8:33 /mi
2nd Half
Distance13.11 mi
Time2:03:49
Pace9:27 /mi
📊Positive Split: 10.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:19:0626:148:2726:14
8:27
-
10K
6.21 mi11:45:1952:278:2626:13
8:26
-0:01
15K
9.32 mi12:11:561:19:048:2926:37
8:34
+0:08
20K
12.43 mi12:39:091:46:178:3327:13
8:46
+0:12
Half
13.11 mi12:44:581:52:068:335:49
8:32
-0:14
25K
15.53 mi13:06:562:14:048:3821:58
9:04
+0:32
30K
18.64 mi13:35:402:42:488:4428:44
9:15
+0:11
20M
20.00 mi13:48:172:55:258:4612:37
9:17
+0:02
21M
21.00 mi13:59:083:06:168:5210:51
10:51
+1:34
35K
21.75 mi14:05:483:12:568:526:40
8:55
-1:56
23M
23.00 mi14:17:263:24:348:5411:38
9:17
+0:22
24M
24.00 mi14:27:113:34:198:569:45
9:45
+0:28
40K
24.85 mi14:35:553:43:038:588:44
10:13
+0:28
25.2M
25.20 mi14:39:433:46:519:003:48
11:01
+0:48
Finish
26.22 mi14:48:473:55:559:009:04
8:54
-2:07

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

8:26 /mi

Average Pace

9:00 /mi

Slowest Pace

11:01 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:24:53

36% of race

Time at Steady Pace

1:57:54

50% of race

Time at Slower Pace

33:08

14% of race

Average Pace: 9:00 /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 mi11:19:0626:148:2726:14
8:27
#19556
10K
6.21 mi11:45:1952:278:2626:13
8:26
#19485
15K
9.32 mi12:11:561:19:048:2926:37
8:34
#19555
20K
12.43 mi12:39:091:46:178:3327:13
8:46
#19593
Half
13.11 mi12:44:581:52:068:335:49
8:32
#19588
25K
15.53 mi13:06:562:14:048:3821:58
9:04
#19680
30K
18.64 mi13:35:402:42:488:4428:44
9:15
#19509
20M
20.00 mi13:48:172:55:258:4612:37
9:17
#19405
21M
21.00 mi13:59:083:06:168:5210:51
10:51
#19536
35K
21.75 mi14:05:483:12:568:526:40
8:55
#19475
23M
23.00 mi14:17:263:24:348:5411:38
9:17
#19377
24M
24.00 mi14:27:113:34:198:569:45
9:45
#19454
40K
24.85 mi14:35:553:43:038:588:44
10:13
#19534
25.2M
25.20 mi14:39:433:46:519:003:48
11:01
#19572
Finish
26.22 mi14:48:473:55:559:009:04
8:54
#19536
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM65-69Seg. OverallSeg. MalesSeg. M65-69
5K3.11 mi3.11 mi19556122691226919733(Top 69%)12386(Top 77%)12386(Top 1938%)
10K6.21 mi3.10 mi19485+7112255+1412255+1419435(Top 68%)12251(Top 76%)12251(Top 1917%)
15K9.32 mi3.11 mi19555-7012291-3612291-3619733(Top 69%)12386(Top 77%)12386(Top 1938%)
20K12.43 mi3.11 mi19593-3812297-612297-619732(Top 69%)12344(Top 77%)12344(Top 1932%)
Half13.11 mi0.68 mi19588+512291+612291+619333(Top 68%)12187(Top 76%)12187(Top 1907%)
25K15.53 mi2.42 mi19680-9212319-2812319-2820166(Top 71%)12482(Top 78%)12482(Top 1953%)
30K18.64 mi3.11 mi19509+17112212+10712212+10718885(Top 66%)11780(Top 73%)11780(Top 1844%)
20M20.00 mi1.36 mi19405+10412143+6912143+6918212(Top 64%)11327(Top 70%)11327(Top 1773%)
21M21.00 mi1.00 mi19536-13112175-3212175-3220966(Top 74%)12474(Top 77%)12474(Top 1952%)
35K21.75 mi0.75 mi19475+6112133+4212133+4217798(Top 63%)10970(Top 68%)10970(Top 1717%)
23M23.00 mi1.25 mi19377+9812050+8312050+8317731(Top 62%)10835(Top 67%)10835(Top 1696%)
24M24.00 mi1.00 mi19454-7712063-1312063-1320551(Top 72%)12127(Top 75%)12127(Top 1898%)
40K24.85 mi0.85 mi19534-8012085-2212085-2221100(Top 74%)12329(Top 77%)12329(Top 1929%)
25.2M25.20 mi0.35 mi19572-3812079+612079+620670(Top 73%)12117(Top 75%)12117(Top 1896%)
Finish26.22 mi1.02 mi19536+3612051+2812051+2818513(Top 65%)11131(Top 69%)11131(Top 1742%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 69%
×21story building
+97ft-345ft

Overall

19733

Males

12386

M65-69

12386

5K→10K

3.1 - 6.2 mi

Top 68%
×5story building
+79ft-138ft

Overall

19435

Males

12251

M65-69

12251

10K→15K

6.2 - 9.3 mi

Top 69%
×3story building
+67ft-78ft

Overall

19733

Males

12386

M65-69

12386

15K→20K

9.3 - 12.4 mi

Top 69%
×5story building
+106ft-86ft

Overall

19732

Males

12344

M65-69

12344

20K→Half

12.4 - 13.1 mi

Top 68%
×2story building
+19ft-37ft

Overall

19333

Males

12187

M65-69

12187

Half→25K

13.1 - 15.5 mi

Top 71%
×4story building
+66ft-88ft

Overall

20166

Males

12482

M65-69

12482

25K→30K

15.5 - 18.6 mi

Top 66%
×9story building
+181ft-148ft

Overall

18885

Males

11780

M65-69

11780

30K→20M

18.6 - 20.0 mi

Top 64%
×5story building
+64ft-50ft

Overall

18212

Males

11327

M65-69

11327

20M→21M

20.0 - 21.0 mi

Top 74%
×8story building
+106ft-24ft

Overall

20966

Males

12474

M65-69

12474

21M→35K

21.0 - 21.8 mi

Top 63%
×7story building
+17ft-86ft

Overall

17798

Males

10970

M65-69

10970

35K→23M

21.8 - 23.0 mi

Top 62%
×5story building
+23ft-63ft

Overall

17731

Males

10835

M65-69

10835

23M→24M

23.0 - 24.0 mi

Top 72%
×6story building
+12ft-82ft

Overall

20551

Males

12127

M65-69

12127

24M→40K

24.0 - 24.9 mi

Top 74%
×1story
+6ft-20ft

Overall

21100

Males

12329

M65-69

12329

40K→25.2M

24.9 - 25.2 mi

Top 73%
×1story
+13ft-16ft

Overall

20670

Males

12117

M65-69

12117

25.2M→Finish

25.2 - 26.2 mi

Top 65%
×2story building
+22ft-21ft

Overall

18513

Males

11131

M65-69

11131

Passing Analysis

Category:
Athletes Passed
1728
Passed By
1708
Net Change
+20
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#19556
5K → 10K287216+71#19556#19485
10K → 15K173243-70#19485#19555
15K → 20K193231-38#19555#19593
20K → Half3631+5#19593#19588
Half → 25K121213-92#19588#19680
25K → 30K297126+171#19680#19509
30K → 20M15551+104#19509#19405
20M → 21M61192-131#19405#19536
21M → 35K8423+61#19536#19475
35K → 23M13840+98#19475#19377
23M → 24M45122-77#19377#19454
24M → 40K42122-80#19454#19534
40K → 25.2M2361-38#19534#19572
25.2M → Finish7337+36#19572#19536
TOTALS17281708+20
📊

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

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing