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BOSTON MARATHON 2023

Julien Defferrard

Bib: 4377•M

CA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 11%
Gender (Male)
#0 / 15176
Top 19%
Masters (Masters Men)
#0 / 9891
Top 7%
Division (M40-44)
#0 / 2241
Top 19%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ 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
6:29/mi
20:09
↑ 97↓ 3451.5%
10K· 6.21 mi
6:24/mi
40:02
↑ 79↓ 1380.4%
15K· 9.32 mi
6:25/mi
59:57
↑ 67↓ 78
20K· 12.43 mi
6:30/mi
1:20:08
↑ 106↓ 860.1%
Half· 13.11 mi
6:24/mi
1:24:30
↑ 19↓ 370.5%
25K· 15.53 mi
6:33/mi
1:40:23
↑ 66↓ 880.2%
30K· 18.64 mi
6:49/mi
2:01:33
↑ 181↓ 1480.2%
20M
6:57/mi
2:10:59
↑ 64↓ 500.2%
21M
7:33/mi
2:18:32
↑ 106↓ 241.6%
35K· 21.75 mi
6:56/mi
2:23:43
↑ 17↓ 861.7%
23M
7:15/mi
2:32:48
↑ 23↓ 630.6%
24M
7:01/mi
2:39:49
↓ 821.3%
40K· 24.85 mi
7:20/mi
2:46:05
↓ 200.3%
25.2M
8:07/mi
2:48:53
↑ 13↓ 160.2%
Finish· 26.22 mi
7:20/mi
2:56:21
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:24:30
Pace6:27 /mi
2nd Half
Distance13.11 mi
Time1:31:51
Pace7:00 /mi
📊Positive Split: 8.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:22:2220:096:2920:09
6:29
-
10K
6.21 mi10:42:1540:026:2719:53
6:24
-0:05
15K
9.32 mi11:02:1059:576:2619:55
6:25
+0:01
20K
12.43 mi11:22:211:20:086:2720:11
6:30
+0:05
Half
13.11 mi11:26:431:24:306:274:22
6:24
-0:06
25K
15.53 mi11:42:361:40:236:2815:53
6:33
+0:09
30K
18.64 mi12:03:462:01:336:3121:10
6:49
+0:16
20M
20.00 mi12:13:122:10:596:339:26
6:57
+0:08
21M
21.00 mi12:20:452:18:326:367:33
7:33
+0:36
35K
21.75 mi12:25:562:23:436:365:11
6:56
-0:37
23M
23.00 mi12:35:012:32:486:399:05
7:15
+0:19
24M
24.00 mi12:42:022:39:496:407:01
7:01
-0:14
40K
24.85 mi12:48:182:46:056:416:16
7:20
+0:19
25.2M
25.20 mi12:51:062:48:536:422:48
8:07
+0:47
Finish
26.22 mi12:58:342:56:216:447:28
7:20
-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

6:24 /mi

Average Pace

6:44 /mi

Slowest Pace

8:07 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:40:23

57% of race

Time at Steady Pace

42:48

24% of race

Time at Slower Pace

33:10

19% of race

Average Pace: 6:44 /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 mi10:22:2220:096:2920:09
6:29
#2207
10K
6.21 mi10:42:1540:026:2719:53
6:24
#2204
15K
9.32 mi11:02:1059:576:2619:55
6:25
#2166
20K
12.43 mi11:22:211:20:086:2720:11
6:30
#2187
Half
13.11 mi11:26:431:24:306:274:22
6:24
#2188
25K
15.53 mi11:42:361:40:236:2815:53
6:33
#2213
30K
18.64 mi12:03:462:01:336:3121:10
6:49
#2328
20M
20.00 mi12:13:122:10:596:339:26
6:57
#2380
21M
21.00 mi12:20:452:18:326:367:33
7:33
#2469
35K
21.75 mi12:25:562:23:436:365:11
6:56
#2513
23M
23.00 mi12:35:012:32:486:399:05
7:15
#2609
24M
24.00 mi12:42:022:39:496:407:01
7:01
#2704
40K
24.85 mi12:48:182:46:056:416:16
7:20
#2799
25.2M
25.20 mi12:51:062:48:536:422:48
8:07
#2860
Finish
26.22 mi12:58:342:56:216:447:28
7:20
#3016
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi2207210621062164(Top 8%)2077(Top 14%)2077(Top 93%)
10K6.21 mi3.10 mi2204+32110-42110-42246(Top 8%)2149(Top 14%)2149(Top 96%)
15K9.32 mi3.11 mi2166+382077+332077+332164(Top 8%)2077(Top 14%)2077(Top 93%)
20K12.43 mi3.11 mi2187-212095-182095-182270(Top 9%)2175(Top 14%)2175(Top 97%)
Half13.11 mi0.68 mi2188-12096-12096-12257(Top 8%)2167(Top 14%)2167(Top 97%)
25K15.53 mi2.42 mi2213-252122-262122-262436(Top 9%)2332(Top 15%)2332(Top 104%)
30K18.64 mi3.11 mi2328-1152232-1102232-1103063(Top 12%)2893(Top 19%)2893(Top 129%)
20M20.00 mi1.36 mi2380-522280-482280-483646(Top 14%)3398(Top 22%)3398(Top 152%)
21M21.00 mi1.00 mi2469-892366-862366-864790(Top 18%)4317(Top 28%)4317(Top 193%)
35K21.75 mi0.75 mi2513-442405-392405-394883(Top 18%)4389(Top 29%)4389(Top 196%)
23M23.00 mi1.25 mi2609-962495-902495-905037(Top 19%)4486(Top 30%)4486(Top 200%)
24M24.00 mi1.00 mi2704-952579-842579-844722(Top 18%)4213(Top 28%)4213(Top 188%)
40K24.85 mi0.85 mi2799-952661-822661-825579(Top 21%)4726(Top 31%)4726(Top 211%)
25.2M25.20 mi0.35 mi2860-612718-572718-577070(Top 27%)5584(Top 37%)5584(Top 249%)
Finish26.22 mi1.02 mi3016-1562856-1382856-1387247(Top 27%)5702(Top 38%)5702(Top 254%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 8%
×21story building
+97ft-345ft

Overall

2164

Males

2077

M40-44

2077

5K→10K

3.1 - 6.2 mi

Top 8%
×5story building
+79ft-138ft

Overall

2246

Males

2149

M40-44

2149

10K→15K

6.2 - 9.3 mi

Top 8%
×3story building
+67ft-78ft

Overall

2164

Males

2077

M40-44

2077

15K→20K

9.3 - 12.4 mi

Top 9%
×5story building
+106ft-86ft

Overall

2270

Males

2175

M40-44

2175

20K→Half

12.4 - 13.1 mi

Top 8%
×2story building
+19ft-37ft

Overall

2257

Males

2167

M40-44

2167

Half→25K

13.1 - 15.5 mi

Top 9%
×4story building
+66ft-88ft

Overall

2436

Males

2332

M40-44

2332

25K→30K

15.5 - 18.6 mi

Top 12%
×9story building
+181ft-148ft

Overall

3063

Males

2893

M40-44

2893

30K→20M

18.6 - 20.0 mi

Top 14%
×5story building
+64ft-50ft

Overall

3646

Males

3398

M40-44

3398

20M→21M

20.0 - 21.0 mi

Top 18%
×8story building
+106ft-24ft

Overall

4790

Males

4317

M40-44

4317

21M→35K

21.0 - 21.8 mi

Top 18%
×7story building
+17ft-86ft

Overall

4883

Males

4389

M40-44

4389

35K→23M

21.8 - 23.0 mi

Top 19%
×5story building
+23ft-63ft

Overall

5037

Males

4486

M40-44

4486

23M→24M

23.0 - 24.0 mi

Top 18%
×6story building
+12ft-82ft

Overall

4722

Males

4213

M40-44

4213

24M→40K

24.0 - 24.9 mi

Top 21%
×1story
+6ft-20ft

Overall

5579

Males

4726

M40-44

4726

40K→25.2M

24.9 - 25.2 mi

Top 27%
×1story
+13ft-16ft

Overall

7070

Males

5584

M40-44

5584

25.2M→Finish

25.2 - 26.2 mi

Top 27%
×2story building
+22ft-21ft

Overall

7247

Males

5702

M40-44

5702

Passing Analysis

Category:
Athletes Passed
452
Passed By
1261
Net Change
-809
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#2207
5K → 10K116113+3#2207#2204
10K → 15K8951+38#2204#2166
15K → 20K5273-21#2166#2187
20K → Half910-1#2187#2188
Half → 25K3661-25#2188#2213
25K → 30K34149-115#2213#2328
30K → 20M2274-52#2328#2380
20M → 21M12101-89#2380#2469
21M → 35K1357-44#2469#2513
35K → 23M20116-96#2513#2609
23M → 24M19114-95#2609#2704
24M → 40K15110-95#2704#2799
40K → 25.2M566-61#2799#2860
25.2M → Finish10166-156#2860#3016
TOTALS4521261-809
📊

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