Boston Marathon logo
BOSTON MARATHON 2025

Olivier St-Denis

Bib: 3578•M

QC

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 28404
Top 9%
Gender (Male)
#0 / 16105
Top 15%
Division (M18-39)
#0 / 5642
Top 35%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
19:21
Rank: #2025
Start → 5K
19:21 | 6:14/mi
10K· 6.21 mi
38:50
Rank: #2137 (-112)
5K → 10K
19:29 | 6:16/mi
15K· 9.32 mi
58:20
Rank: #2150 (-13)
10K → 15K
19:30 | 6:17/mi
20K· 12.43 mi
1:17:57
Rank: #2120 (+30)
15K → 20K
19:37 | 6:19/mi
Half· 13.11 mi
1:22:13
Rank: #2125 (-5)
20K → Half
4:16 | 6:15/mi
25K· 15.53 mi
1:37:49
Rank: #2162 (-37)
Half → 25K
15:36 | 6:26/mi
30K· 18.64 mi
1:58:31
Rank: #2220 (-58)
25K → 30K
20:42 | 6:40/mi
20M
2:07:53
Rank: #2289 (-69)
30K → 20M
9:22 | 6:54/mi
21M
2:15:09
Rank: #2321 (-32)
20M → 21M
7:16 | 7:16/mi
35K· 21.75 mi
2:20:09
Rank: #2325 (-4)
21M → 35K
5:00 | 6:41/mi
23M
2:28:39
Rank: #2330 (-5)
35K → 23M
8:30 | 6:47/mi
24M
2:35:42
Rank: #2400 (-70)
23M → 24M
7:03 | 7:03/mi
40K· 24.85 mi
2:41:51
Rank: #2472 (-72)
24M → 40K
6:09 | 7:12/mi
25.2M
2:44:35
Rank: #2503 (-31)
40K → 25.2M
2:44 | 7:56/mi
Finish· 26.22 mi
2:51:52
Rank: #2609 (-106)
25.2M → Finish
7:17 | 7:09/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
Time1:22:13
Pace6:16 /mi
2nd Half
Distance13.11 mi
Time1:29:39
Pace6:50 /mi
📊Positive Split: 9.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:21:2619:216:1419:21
6:14
-
10K
6.21 mi10:40:5538:506:1519:29
6:16
+0:02
15K
9.32 mi11:00:2558:206:1619:30
6:17
+0:01
20K
12.43 mi11:20:021:17:576:1619:37
6:19
+0:02
Half
13.11 mi11:24:181:22:136:164:16
6:15
-0:04
25K
15.53 mi11:39:541:37:496:1815:36
6:26
+0:11
30K
18.64 mi12:00:361:58:316:2120:42
6:40
+0:14
20M
20.00 mi12:09:582:07:536:249:22
6:54
+0:14
21M
21.00 mi12:17:142:15:096:267:16
7:16
+0:22
35K
21.75 mi12:22:142:20:096:275:00
6:41
-0:35
23M
23.00 mi12:30:442:28:396:288:30
6:47
+0:06
24M
24.00 mi12:37:472:35:426:297:03
7:03
+0:16
40K
24.85 mi12:43:562:41:516:316:09
7:12
+0:09
25.2M
25.20 mi12:46:402:44:356:322:44
7:56
+0:44
Finish
26.22 mi12:53:572:51:526:347:17
7:09
-0:47

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

6:14 /mi

Average Pace

6:34 /mi

Slowest Pace

7:56 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:37:49

57% of race

Time at Steady Pace

43:34

25% of race

Time at Slower Pace

30:29

18% of race

Average Pace: 6:33 /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 mi10:21:2619:216:1419:21
6:14
#2025
10K
6.21 mi10:40:5538:506:1519:29
6:16
#2137
15K
9.32 mi11:00:2558:206:1619:30
6:17
#2150
20K
12.43 mi11:20:021:17:576:1619:37
6:19
#2120
Half
13.11 mi11:24:181:22:136:164:16
6:15
#2125
25K
15.53 mi11:39:541:37:496:1815:36
6:26
#2162
30K
18.64 mi12:00:361:58:316:2120:42
6:40
#2220
20M
20.00 mi12:09:582:07:536:249:22
6:54
#2289
21M
21.00 mi12:17:142:15:096:267:16
7:16
#2321
35K
21.75 mi12:22:142:20:096:275:00
6:41
#2325
23M
23.00 mi12:30:442:28:396:288:30
6:47
#2330
24M
24.00 mi12:37:472:35:426:297:03
7:03
#2400
40K
24.85 mi12:43:562:41:516:316:09
7:12
#2472
25.2M
25.20 mi12:46:402:44:356:322:44
7:56
#2503
Finish
26.22 mi12:53:572:51:526:347:17
7:09
#2609
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi2025192819282239(Top 8%)2135(Top 13%)2135(Top 38%)
10K6.21 mi3.10 mi2137-1122039-1112039-1112246(Top 8%)2147(Top 13%)2147(Top 38%)
15K9.32 mi3.11 mi2150-132053-142053-142239(Top 8%)2135(Top 13%)2135(Top 38%)
20K12.43 mi3.11 mi2120+302024+292024+292082(Top 7%)1986(Top 12%)1986(Top 35%)
Half13.11 mi0.68 mi2125-52029-52029-52296(Top 8%)2197(Top 14%)2197(Top 39%)
25K15.53 mi2.42 mi2162-372063-342063-342530(Top 9%)2406(Top 15%)2406(Top 43%)
30K18.64 mi3.11 mi2220-582116-532116-532705(Top 10%)2559(Top 16%)2559(Top 45%)
20M20.00 mi1.36 mi2289-692184-682184-683482(Top 12%)3218(Top 20%)3218(Top 57%)
21M21.00 mi1.00 mi2321-322212-282212-283470(Top 12%)3182(Top 20%)3182(Top 56%)
35K21.75 mi0.75 mi2325-42215-32215-33418(Top 12%)3117(Top 19%)3117(Top 55%)
23M23.00 mi1.25 mi2330-52222-72222-72655(Top 9%)2447(Top 15%)2447(Top 43%)
24M24.00 mi1.00 mi2400-702283-612283-614912(Top 17%)4200(Top 26%)4200(Top 74%)
40K24.85 mi0.85 mi2472-722346-632346-634999(Top 18%)4209(Top 26%)4209(Top 75%)
25.2M25.20 mi0.35 mi2503-312374-282374-285541(Top 20%)4459(Top 28%)4459(Top 79%)
Finish26.22 mi1.02 mi2609-1062469-952469-956669(Top 23%)5129(Top 32%)5129(Top 91%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 8%
×21stories
+97ft-345ft

Overall

2239

Males

2135

M18-39

2135

5K→10K

3.1 - 6.2 mi

Top 8%
×5stories
+79ft-138ft

Overall

2246

Males

2147

M18-39

2147

10K→15K

6.2 - 9.3 mi

Top 8%
×3stories
+67ft-78ft

Overall

2239

Males

2135

M18-39

2135

15K→20K

9.3 - 12.4 mi

Top 7%
×5stories
+106ft-86ft

Overall

2082

Males

1986

M18-39

1986

20K→Half

12.4 - 13.1 mi

Top 8%
×2stories
+19ft-37ft

Overall

2296

Males

2197

M18-39

2197

Half→25K

13.1 - 15.5 mi

Top 9%
×4stories
+66ft-88ft

Overall

2530

Males

2406

M18-39

2406

25K→30K

15.5 - 18.6 mi

Top 10%
×9stories
+181ft-148ft

Overall

2705

Males

2559

M18-39

2559

30K→20M

18.6 - 20.0 mi

Top 12%
×5stories
+64ft-50ft

Overall

3482

Males

3218

M18-39

3218

20M→21M

20.0 - 21.0 mi

Top 12%
×8stories
+106ft-24ft

Overall

3470

Males

3182

M18-39

3182

21M→35K

21.0 - 21.8 mi

Top 12%
×7stories
+17ft-86ft

Overall

3418

Males

3117

M18-39

3117

35K→23M

21.8 - 23.0 mi

Top 9%
×5stories
+23ft-63ft

Overall

2655

Males

2447

M18-39

2447

23M→24M

23.0 - 24.0 mi

Top 17%
×6stories
+12ft-82ft

Overall

4912

Males

4200

M18-39

4200

24M→40K

24.0 - 24.9 mi

Top 18%
×1story
+6ft-20ft

Overall

4999

Males

4209

M18-39

4209

40K→25.2M

24.9 - 25.2 mi

Top 20%
×1story
+13ft-16ft

Overall

5541

Males

4459

M18-39

4459

25.2M→Finish

25.2 - 26.2 mi

Top 23%
×2stories
+22ft-21ft

Overall

6669

Males

5129

M18-39

5129

Passing Analysis

Category:
Athletes Passed
501
Passed By
1085
Net Change
-584
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#2025
5K → 10K74186-112#2025#2137
10K → 15K6982-13#2137#2150
15K → 20K7545+30#2150#2120
20K → Half914-5#2120#2125
Half → 25K3875-37#2125#2162
25K → 30K58116-58#2162#2220
30K → 20M2695-69#2220#2289
20M → 21M3264-32#2289#2321
21M → 35K2226-4#2321#2325
35K → 23M4449-5#2325#2330
23M → 24M2393-70#2330#2400
24M → 40K1688-72#2400#2472
40K → 25.2M536-31#2472#2503
25.2M → Finish10116-106#2503#2609
TOTALS5011085-584
📊

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