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BOSTON MARATHON 2025

Frederic Leroux

Bib: 1363•M

QC

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 5%
Gender (Male)
#0 / 16105
Top 8%
Masters (Masters Men)
#0 / 10463
Top 2%
Division (M40-44)
#0 / 2247
Top 6%
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
6:00/mi
18:38
↑ 97↓ 3451.5%
10K· 6.21 mi
5:59/mi
37:14
↑ 79↓ 1380.4%
15K· 9.32 mi
6:04/mi
56:05
↑ 67↓ 78
20K· 12.43 mi
6:05/mi
1:15:00
↑ 106↓ 860.1%
Half· 13.11 mi
5:58/mi
1:19:04
↑ 19↓ 370.5%
25K· 15.53 mi
6:10/mi
1:34:00
↑ 66↓ 880.2%
30K· 18.64 mi
6:21/mi
1:53:45
↑ 181↓ 1480.2%
20M
6:26/mi
2:02:30
↑ 64↓ 500.2%
21M
7:20/mi
2:09:50
↑ 106↓ 241.6%
35K· 21.75 mi
6:26/mi
2:14:39
↑ 17↓ 861.7%
23M
6:52/mi
2:23:15
↑ 23↓ 630.6%
24M
6:49/mi
2:30:04
↓ 821.3%
40K· 24.85 mi
6:40/mi
2:35:46
↓ 200.3%
25.2M
7:27/mi
2:38:20
↑ 13↓ 160.2%
Finish· 26.22 mi
6:35/mi
2:45:03
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:19:04
Pace6:02 /mi
2nd Half
Distance13.11 mi
Time1:25:59
Pace6:34 /mi
📊Positive Split: 8.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:19:1518:386:0018:38
6:00
-
10K
6.21 mi10:37:5137:146:0018:36
5:59
-0:01
15K
9.32 mi10:56:4256:056:0118:51
6:04
+0:05
20K
12.43 mi11:15:371:15:006:0218:55
6:05
+0:01
Half
13.11 mi11:19:411:19:046:024:04
5:58
-0:07
25K
15.53 mi11:34:371:34:006:0314:56
6:10
+0:12
30K
18.64 mi11:54:221:53:456:0619:45
6:21
+0:11
20M
20.00 mi12:03:072:02:306:078:45
6:26
+0:05
21M
21.00 mi12:10:272:09:506:117:20
7:20
+0:54
35K
21.75 mi12:15:162:14:396:114:49
6:26
-0:54
23M
23.00 mi12:23:522:23:156:148:36
6:52
+0:26
24M
24.00 mi12:30:412:30:046:156:49
6:49
-0:03
40K
24.85 mi12:36:232:35:466:165:42
6:40
-0:09
25.2M
25.20 mi12:38:572:38:206:172:34
7:27
+0:47
Finish
26.22 mi12:45:402:45:036:186:43
6:35
-0:52

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

5:58 /mi

Average Pace

6:18 /mi

Slowest Pace

7:27 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:34:00

57% of race

Time at Steady Pace

40:02

24% of race

Time at Slower Pace

31:01

19% of race

Average Pace: 6:18 /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 mi10:19:1518:386:0018:38
6:00
#1079
10K
6.21 mi10:37:5137:146:0018:36
5:59
#1040
15K
9.32 mi10:56:4256:056:0118:51
6:04
#1100
20K
12.43 mi11:15:371:15:006:0218:55
6:05
#1086
Half
13.11 mi11:19:411:19:046:024:04
5:58
#1084
25K
15.53 mi11:34:371:34:006:0314:56
6:10
#1091
30K
18.64 mi11:54:221:53:456:0619:45
6:21
#1132
20M
20.00 mi12:03:072:02:306:078:45
6:26
#1132
21M
21.00 mi12:10:272:09:506:117:20
7:20
#1223
35K
21.75 mi12:15:162:14:396:114:49
6:26
#1227
23M
23.00 mi12:23:522:23:156:148:36
6:52
#1269
24M
24.00 mi12:30:412:30:046:156:49
6:49
#1327
40K
24.85 mi12:36:232:35:466:165:42
6:40
#1337
25.2M
25.20 mi12:38:572:38:206:172:34
7:27
#1351
Finish
26.22 mi12:45:402:45:036:186:43
6:35
#1394
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi1079102010201253(Top 4%)1189(Top 7%)1189(Top 53%)
10K6.21 mi3.10 mi1040+39980+40980+401073(Top 4%)1012(Top 6%)1012(Top 45%)
15K9.32 mi3.11 mi1100-601039-591039-591253(Top 4%)1189(Top 7%)1189(Top 53%)
20K12.43 mi3.11 mi1086+141026+131026+131142(Top 4%)1078(Top 7%)1078(Top 48%)
Half13.11 mi0.68 mi1084+21024+21024+21035(Top 4%)982(Top 6%)982(Top 44%)
25K15.53 mi2.42 mi1091-71030-61030-61306(Top 5%)1237(Top 8%)1237(Top 55%)
30K18.64 mi3.11 mi1132-411068-381068-381393(Top 5%)1317(Top 8%)1317(Top 59%)
20M20.00 mi1.36 mi1132106810681376(Top 5%)1301(Top 8%)1301(Top 58%)
21M21.00 mi1.00 mi1223-911152-841152-843738(Top 13%)3401(Top 21%)3401(Top 151%)
35K21.75 mi0.75 mi1227-41156-41156-42145(Top 8%)2004(Top 12%)2004(Top 89%)
23M23.00 mi1.25 mi1269-421196-401196-403020(Top 11%)2759(Top 17%)2759(Top 123%)
24M24.00 mi1.00 mi1327-581250-541250-543564(Top 13%)3183(Top 20%)3183(Top 142%)
40K24.85 mi0.85 mi1337-101260-101260-102206(Top 8%)2021(Top 13%)2021(Top 90%)
25.2M25.20 mi0.35 mi1351-141274-141274-143066(Top 11%)2707(Top 17%)2707(Top 120%)
Finish26.22 mi1.02 mi1394-431315-411315-413255(Top 11%)2863(Top 18%)2863(Top 127%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 4%
×21story building
+97ft-345ft

Overall

1253

Males

1189

M40-44

1189

5K→10K

3.1 - 6.2 mi

Top 4%
×5story building
+79ft-138ft

Overall

1073

Males

1012

M40-44

1012

10K→15K

6.2 - 9.3 mi

Top 4%
×3story building
+67ft-78ft

Overall

1253

Males

1189

M40-44

1189

15K→20K

9.3 - 12.4 mi

Top 4%
×5story building
+106ft-86ft

Overall

1142

Males

1078

M40-44

1078

20K→Half

12.4 - 13.1 mi

Top 4%
×2story building
+19ft-37ft

Overall

1035

Males

982

M40-44

982

Half→25K

13.1 - 15.5 mi

Top 5%
×4story building
+66ft-88ft

Overall

1306

Males

1237

M40-44

1237

25K→30K

15.5 - 18.6 mi

Top 5%
×9story building
+181ft-148ft

Overall

1393

Males

1317

M40-44

1317

30K→20M

18.6 - 20.0 mi

Top 5%
×5story building
+64ft-50ft

Overall

1376

Males

1301

M40-44

1301

20M→21M

20.0 - 21.0 mi

Top 13%
×8story building
+106ft-24ft

Overall

3738

Males

3401

M40-44

3401

21M→35K

21.0 - 21.8 mi

Top 8%
×7story building
+17ft-86ft

Overall

2145

Males

2004

M40-44

2004

35K→23M

21.8 - 23.0 mi

Top 11%
×5story building
+23ft-63ft

Overall

3020

Males

2759

M40-44

2759

23M→24M

23.0 - 24.0 mi

Top 13%
×6story building
+12ft-82ft

Overall

3564

Males

3183

M40-44

3183

24M→40K

24.0 - 24.9 mi

Top 8%
×1story
+6ft-20ft

Overall

2206

Males

2021

M40-44

2021

40K→25.2M

24.9 - 25.2 mi

Top 11%
×1story
+13ft-16ft

Overall

3066

Males

2707

M40-44

2707

25.2M→Finish

25.2 - 26.2 mi

Top 11%
×2story building
+22ft-21ft

Overall

3255

Males

2863

M40-44

2863

Passing Analysis

Category:
Athletes Passed
316
Passed By
631
Net Change
-315
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#1079
5K → 10K6930+39#1079#1040
10K → 15K1777-60#1040#1100
15K → 20K4026+14#1100#1086
20K → Half75+2#1086#1084
Half → 25K2633-7#1084#1091
25K → 30K3778-41#1091#1132
30K → 20M30300#1132#1132
20M → 21M899-91#1132#1223
21M → 35K1620-4#1223#1227
35K → 23M2668-42#1227#1269
23M → 24M1371-58#1269#1327
24M → 40K1424-10#1327#1337
40K → 25.2M216-14#1337#1351
25.2M → Finish1154-43#1351#1394
TOTALS316631-315
📊

Passing Visuals

Category:
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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing