Boston Marathon logo
BOSTON MARATHON 2025

Donall Mac Lochlainn

Bib: 30669•M

BC

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
27:28
Rank: #21703
Start → 5K
8:50/mi
27:28 split
10K· 6.21 mi
53:36
Rank: #20531 (+1172)
5K → 10K
8:25/mi
26:08 split
15K· 9.32 mi
1:19:27
Rank: #19822 (+709)
10K → 15K
8:19/mi
25:51 split
20K· 12.43 mi
1:45:35
Rank: #19236 (+586)
15K → 20K
8:25/mi
26:08 split
Half· 13.11 mi
1:51:14
Rank: #19158 (+78)
20K → Half
8:17/mi
5:39 split
25K· 15.53 mi
2:11:24
Rank: #18646 (+512)
Half → 25K
8:19/mi
20:10 split
30K· 18.64 mi
2:38:14
Rank: #18027 (+619)
25K → 30K
8:38/mi
26:50 split
20M
2:50:47
Rank: #18026 (+1)
30K → 20M
9:14/mi
12:33 split
21M
3:02:13
Rank: #18465 (-439)
20M → 21M
11:26/mi
11:26 split
35K· 21.75 mi
3:09:32
Rank: #18635 (-170)
21M → 35K
9:47/mi
7:19 split
23M
3:22:36
Rank: #18920 (-285)
35K → 23M
10:26/mi
13:04 split
24M
3:34:21
Rank: #19461 (-541)
23M → 24M
11:45/mi
11:45 split
40K· 24.85 mi
3:43:49
Rank: #19708 (-247)
24M → 40K
11:04/mi
9:28 split
25.2M
3:47:16
Rank: #19660 (+48)
40K → 25.2M
10:00/mi
3:27 split
Finish· 26.22 mi
3:56:23
Rank: #19632 (+28)
25.2M → Finish
8:57/mi
9:07 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
Time1:51:14
Pace8:29 /mi
2nd Half
Distance13.11 mi
Time2:05:09
Pace9:33 /mi
📊Positive Split: 12.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:49:5227:288:5027:28
8:50
-
10K
6.21 mi12:16:0053:368:3826:08
8:25
-0:25
15K
9.32 mi12:41:511:19:278:3125:51
8:19
-0:06
20K
12.43 mi13:07:591:45:358:3026:08
8:25
+0:06
Half
13.11 mi13:13:381:51:148:295:39
8:17
-0:08
25K
15.53 mi13:33:482:11:248:2820:10
8:19
+0:02
30K
18.64 mi14:00:382:38:148:2926:50
8:38
+0:19
20M
20.00 mi14:13:112:50:478:3212:33
9:14
+0:36
21M
21.00 mi14:24:373:02:138:4111:26
11:26
+2:12
35K
21.75 mi14:31:563:09:328:437:19
9:47
-1:39
23M
23.00 mi14:45:003:22:368:4913:04
10:26
+0:39
24M
24.00 mi14:56:453:34:218:5611:45
11:45
+1:19
40K
24.85 mi15:06:133:43:499:009:28
11:04
-0:41
25.2M
25.20 mi15:09:403:47:169:013:27
10:00
-1:04
Finish
26.22 mi15:18:473:56:239:019:07
8:57
-1:03

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

8:17 /mi

Average Pace

9:01 /mi

Slowest Pace

11:45 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

51:40

22% of race

Time at Steady Pace

2:08:14

54% of race

Time at Slower Pace

56:29

24% of race

Average Pace: 9:01 /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 mi11:49:5227:288:5027:28
8:50
#21703
10K
6.21 mi12:16:0053:368:3826:08
8:25
#20531
15K
9.32 mi12:41:511:19:278:3125:51
8:19
#19822
20K
12.43 mi13:07:591:45:358:3026:08
8:25
#19236
Half
13.11 mi13:13:381:51:148:295:39
8:17
#19158
25K
15.53 mi13:33:482:11:248:2820:10
8:19
#18646
30K
18.64 mi14:00:382:38:148:2926:50
8:38
#18027
20M
20.00 mi14:13:112:50:478:3212:33
9:14
#18026
21M
21.00 mi14:24:373:02:138:4111:26
11:26
#18465
35K
21.75 mi14:31:563:09:328:437:19
9:47
#18635
23M
23.00 mi14:45:003:22:368:4913:04
10:26
#18920
24M
24.00 mi14:56:453:34:218:5611:45
11:45
#19461
40K
24.85 mi15:06:133:43:499:009:28
11:04
#19708
25.2M
25.20 mi15:09:403:47:169:013:27
10:00
#19660
Finish
26.22 mi15:18:473:56:239:019:07
8:57
#19632
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi21703131791317918182(Top 64%)11702(Top 73%)11702(Top 207%)
10K6.21 mi3.10 mi20531+117212683+49612683+49619254(Top 68%)12168(Top 76%)12168(Top 216%)
15K9.32 mi3.11 mi19822+70912407+27612407+27618182(Top 64%)11702(Top 73%)11702(Top 207%)
20K12.43 mi3.11 mi19236+58612139+26812139+26817622(Top 62%)11452(Top 71%)11452(Top 203%)
Half13.11 mi0.68 mi19158+7812106+3312106+3317810(Top 63%)11555(Top 72%)11555(Top 205%)
25K15.53 mi2.42 mi18646+51211876+23011876+23016024(Top 56%)10659(Top 66%)10659(Top 189%)
30K18.64 mi3.11 mi18027+61911562+31411562+31415603(Top 55%)10331(Top 64%)10331(Top 183%)
20M20.00 mi1.36 mi18026+111538+2411538+2417945(Top 63%)11217(Top 70%)11217(Top 199%)
21M21.00 mi1.00 mi18465-43911710-17211710-17222460(Top 79%)13180(Top 82%)13180(Top 234%)
35K21.75 mi0.75 mi18635-17011772-6211772-6221251(Top 75%)12549(Top 78%)12549(Top 222%)
23M23.00 mi1.25 mi18920-28511865-9311865-9321825(Top 77%)12792(Top 79%)12792(Top 227%)
24M24.00 mi1.00 mi19461-54112069-20412069-20425325(Top 89%)14468(Top 90%)14468(Top 256%)
40K24.85 mi0.85 mi19708-24712155-8612155-8623303(Top 82%)13394(Top 83%)13394(Top 237%)
25.2M25.20 mi0.35 mi19660+4812119+3612119+3617031(Top 60%)10396(Top 65%)10396(Top 184%)
Finish26.22 mi1.02 mi19632+2812096+2312096+2318757(Top 66%)11247(Top 70%)11247(Top 199%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 64%
×21story building
+97ft-345ft

Overall

18182

Males

11702

M18-39

11702

5K→10K

3.1 - 6.2 mi

Top 68%
×5story building
+79ft-138ft

Overall

19254

Males

12168

M18-39

12168

10K→15K

6.2 - 9.3 mi

Top 64%
×3story building
+67ft-78ft

Overall

18182

Males

11702

M18-39

11702

15K→20K

9.3 - 12.4 mi

Top 62%
×5story building
+106ft-86ft

Overall

17622

Males

11452

M18-39

11452

20K→Half

12.4 - 13.1 mi

Top 63%
×2story building
+19ft-37ft

Overall

17810

Males

11555

M18-39

11555

Half→25K

13.1 - 15.5 mi

Top 56%
×4story building
+66ft-88ft

Overall

16024

Males

10659

M18-39

10659

25K→30K

15.5 - 18.6 mi

Top 55%
×9story building
+181ft-148ft

Overall

15603

Males

10331

M18-39

10331

30K→20M

18.6 - 20.0 mi

Top 63%
×5story building
+64ft-50ft

Overall

17945

Males

11217

M18-39

11217

20M→21M

20.0 - 21.0 mi

Top 79%
×8story building
+106ft-24ft

Overall

22460

Males

13180

M18-39

13180

21M→35K

21.0 - 21.8 mi

Top 75%
×7story building
+17ft-86ft

Overall

21251

Males

12549

M18-39

12549

35K→23M

21.8 - 23.0 mi

Top 77%
×5story building
+23ft-63ft

Overall

21825

Males

12792

M18-39

12792

23M→24M

23.0 - 24.0 mi

Top 89%
×6story building
+12ft-82ft

Overall

25325

Males

14468

M18-39

14468

24M→40K

24.0 - 24.9 mi

Top 82%
×1story
+6ft-20ft

Overall

23303

Males

13394

M18-39

13394

40K→25.2M

24.9 - 25.2 mi

Top 60%
×1story
+13ft-16ft

Overall

17031

Males

10396

M18-39

10396

25.2M→Finish

25.2 - 26.2 mi

Top 66%
×2story building
+22ft-21ft

Overall

18757

Males

11247

M18-39

11247

Passing Analysis

Category:
Athletes Passed
4116
Passed By
2045
Net Change
+2071
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#21703
5K → 10K119826+1172#21703#20531
10K → 15K71910+709#20531#19822
15K → 20K59913+586#19822#19236
20K → Half879+78#19236#19158
Half → 25K5153+512#19158#18646
25K → 30K63415+619#18646#18027
30K → 20M127126+1#18027#18026
20M → 21M18457-439#18026#18465
21M → 35K24194-170#18465#18635
35K → 23M43328-285#18635#18920
23M → 24M7548-541#18920#19461
24M → 40K20267-247#19461#19708
40K → 25.2M535+48#19708#19660
25.2M → Finish7244+28#19660#19632
TOTALS41162045+2071
📊

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