Boston Marathon logo
BOSTON MARATHON 2025

Riley Demeulenaere

Bib: 3705•M

IL

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 28404
Top 38%
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
19:16
Rank: #1888
Start → 5K
6:12/mi
19:16 split
10K· 6.21 mi
38:33
Rank: #1897 (-9)
5K → 10K
6:12/mi
19:17 split
15K· 9.32 mi
57:38
Rank: #1782 (+115)
10K → 15K
6:09/mi
19:05 split
20K· 12.43 mi
1:17:01
Rank: #1744 (+38)
15K → 20K
6:14/mi
19:23 split
Half· 13.11 mi
1:21:17
Rank: #1767 (-23)
20K → Half
6:15/mi
4:16 split
25K· 15.53 mi
1:36:56
Rank: #1890 (-123)
Half → 25K
6:27/mi
15:39 split
30K· 18.64 mi
2:01:17
Rank: #3089 (-1199)
25K → 30K
7:50/mi
24:21 split
20M
2:12:31
Rank: #3628 (-539)
30K → 20M
8:16/mi
11:14 split
21M
2:22:06
Rank: #4332 (-704)
20M → 21M
9:35/mi
9:35 split
35K· 21.75 mi
2:29:11
Rank: #5065 (-733)
21M → 35K
9:28/mi
7:05 split
23M
2:49:33
Rank: #8391 (-3326)
35K → 23M
16:16/mi
20:22 split
24M
3:01:50
Rank: #10035 (-1644)
23M → 24M
12:17/mi
12:17 split
40K· 24.85 mi
3:10:46
Rank: #10679 (-644)
24M → 40K
10:27/mi
8:56 split
25.2M
3:15:03
Rank: #11034 (-355)
40K → 25.2M
12:25/mi
4:17 split
Finish· 26.22 mi
3:22:11
Rank: #10781 (+253)
25.2M → Finish
7:00/mi
7:08 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
Time1:21:17
Pace6:12 /mi
2nd Half
Distance13.11 mi
Time2:00:54
Pace9:13 /mi
📊Positive Split: 48.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:21:2019:166:1219:16
6:12
-
10K
6.21 mi10:40:3738:336:1219:17
6:12
0:00
15K
9.32 mi10:59:4257:386:1119:05
6:09
-0:03
20K
12.43 mi11:19:051:17:016:1219:23
6:14
+0:05
Half
13.11 mi11:23:211:21:176:124:16
6:15
+0:01
25K
15.53 mi11:39:001:36:566:1415:39
6:27
+0:12
30K
18.64 mi12:03:212:01:176:3024:21
7:50
+1:23
20M
20.00 mi12:14:352:12:316:3811:14
8:16
+0:26
21M
21.00 mi12:24:102:22:066:469:35
9:35
+1:19
35K
21.75 mi12:31:152:29:116:527:05
9:28
-0:07
23M
23.00 mi12:51:372:49:337:2220:22
16:16
+6:48
24M
24.00 mi13:03:543:01:507:3512:17
12:17
-3:59
40K
24.85 mi13:12:503:10:467:418:56
10:27
-1:50
25.2M
25.20 mi13:17:073:15:037:444:17
12:25
+1:58
Finish
26.22 mi13:24:153:22:117:437:08
7:00
-5:25

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

6:09 /mi

Average Pace

7:43 /mi

Slowest Pace

16:16 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:21:17

40% of race

Time at Steady Pace

58:22

29% of race

Time at Slower Pace

1:02:32

31% of race

Average Pace: 7:43 /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 mi10:21:2019:166:1219:16
6:12
#1888
10K
6.21 mi10:40:3738:336:1219:17
6:12
#1897
15K
9.32 mi10:59:4257:386:1119:05
6:09
#1782
20K
12.43 mi11:19:051:17:016:1219:23
6:14
#1744
Half
13.11 mi11:23:211:21:176:124:16
6:15
#1767
25K
15.53 mi11:39:001:36:566:1415:39
6:27
#1890
30K
18.64 mi12:03:212:01:176:3024:21
7:50
#3089
20M
20.00 mi12:14:352:12:316:3811:14
8:16
#3628
21M
21.00 mi12:24:102:22:066:469:35
9:35
#4332
35K
21.75 mi12:31:152:29:116:527:05
9:28
#5065
23M
23.00 mi12:51:372:49:337:2220:22
16:16
#8391
24M
24.00 mi13:03:543:01:507:3512:17
12:17
#10035
40K
24.85 mi13:12:503:10:467:418:56
10:27
#10679
25.2M
25.20 mi13:17:073:15:037:444:17
12:25
#11034
Finish
26.22 mi13:24:153:22:117:437:08
7:00
#10781
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi1888179417941581(Top 6%)1504(Top 9%)1504(Top 27%)
10K6.21 mi3.10 mi1897-91806-121806-121959(Top 7%)1864(Top 12%)1864(Top 33%)
15K9.32 mi3.11 mi1782+1151696+1101696+1101581(Top 6%)1504(Top 9%)1504(Top 27%)
20K12.43 mi3.11 mi1744+381658+381658+381753(Top 6%)1667(Top 10%)1667(Top 30%)
Half13.11 mi0.68 mi1767-231680-221680-222314(Top 8%)2215(Top 14%)2215(Top 39%)
25K15.53 mi2.42 mi1890-1231800-1201800-1202657(Top 9%)2530(Top 16%)2530(Top 45%)
30K18.64 mi3.11 mi3089-11992938-11382938-113810195(Top 36%)7792(Top 48%)7792(Top 138%)
20M20.00 mi1.36 mi3628-5393423-4853423-48512236(Top 43%)8633(Top 54%)8633(Top 153%)
21M21.00 mi1.00 mi4332-7044030-6074030-60716423(Top 58%)10431(Top 65%)10431(Top 185%)
35K21.75 mi0.75 mi5065-7334649-6194649-61920185(Top 71%)12048(Top 75%)12048(Top 214%)
23M23.00 mi1.25 mi8391-33266983-23346983-233428192(Top 99%)15961(Top 99%)15961(Top 283%)
24M24.00 mi1.00 mi10035-16447845-8627845-86226024(Top 92%)14817(Top 92%)14817(Top 263%)
40K24.85 mi0.85 mi10679-6448140-2958140-29521751(Top 77%)12626(Top 78%)12626(Top 224%)
25.2M25.20 mi0.35 mi11034-3558277-1378277-13724014(Top 85%)13763(Top 85%)13763(Top 244%)
Finish26.22 mi1.02 mi10781+2538130+1478130+1475746(Top 20%)4583(Top 28%)4583(Top 81%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 6%
×21stories
+97ft-345ft

Overall

1581

Males

1504

M18-39

1504

5K→10K

3.1 - 6.2 mi

Top 7%
×5stories
+79ft-138ft

Overall

1959

Males

1864

M18-39

1864

10K→15K

6.2 - 9.3 mi

Top 6%
×3stories
+67ft-78ft

Overall

1581

Males

1504

M18-39

1504

15K→20K

9.3 - 12.4 mi

Top 6%
×5stories
+106ft-86ft

Overall

1753

Males

1667

M18-39

1667

20K→Half

12.4 - 13.1 mi

Top 8%
×2stories
+19ft-37ft

Overall

2314

Males

2215

M18-39

2215

Half→25K

13.1 - 15.5 mi

Top 9%
×4stories
+66ft-88ft

Overall

2657

Males

2530

M18-39

2530

25K→30K

15.5 - 18.6 mi

Top 36%
×9stories
+181ft-148ft

Overall

10195

Males

7792

M18-39

7792

30K→20M

18.6 - 20.0 mi

Top 43%
×5stories
+64ft-50ft

Overall

12236

Males

8633

M18-39

8633

20M→21M

20.0 - 21.0 mi

Top 58%
×8stories
+106ft-24ft

Overall

16423

Males

10431

M18-39

10431

21M→35K

21.0 - 21.8 mi

Top 71%
×7stories
+17ft-86ft

Overall

20185

Males

12048

M18-39

12048

35K→23M

21.8 - 23.0 mi

Top 99%
×5stories
+23ft-63ft

Overall

28192

Males

15961

M18-39

15961

23M→24M

23.0 - 24.0 mi

Top 92%
×6stories
+12ft-82ft

Overall

26024

Males

14817

M18-39

14817

24M→40K

24.0 - 24.9 mi

Top 77%
×1story
+6ft-20ft

Overall

21751

Males

12626

M18-39

12626

40K→25.2M

24.9 - 25.2 mi

Top 85%
×1story
+13ft-16ft

Overall

24014

Males

13763

M18-39

13763

25.2M→Finish

25.2 - 26.2 mi

Top 20%
×2stories
+22ft-21ft

Overall

5746

Males

4583

M18-39

4583

Passing Analysis

Category:
Athletes Passed
623
Passed By
9513
Net Change
-8893
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#1888
5K → 10K103112-9#1888#1897
10K → 15K13116+115#1897#1782
15K → 20K7032+38#1782#1744
20K → Half225-23#1744#1767
Half → 25K24147-123#1767#1890
25K → 30K31202-1199#1890#3089
30K → 20M10549-539#3089#3628
20M → 21M2706-704#3628#4332
21M → 35K5738-733#4332#5065
35K → 23M13327-3326#5065#8391
23M → 24M21644-1644#8391#10035
24M → 40K9652-644#10035#10679
40K → 25.2M5360-355#10679#11034
25.2M → Finish2563+253#11034#10781
TOTALS6239513-8893
📊

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