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BOSTON MARATHON 2024

Mark Ambrefe

Bib: 25506•M

MA

0:00
0:00
/ mi
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Overall
#0 / 25550
Gender (Male)
#0 / 14578
Division (M18-39)
#0 / 4849
Race Day Weather
55°/45°F
scattered 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
11:24/mi
35:24
↑ 97↓ 3451.5%
10K· 6.21 mi
11:38/mi
1:11:34
↑ 79↓ 1380.4%
15K· 9.32 mi
12:09/mi
1:49:18
↑ 67↓ 78
20K· 12.43 mi
11:56/mi
2:26:22
↑ 106↓ 860.1%
Half· 13.11 mi
11:10/mi
2:33:59
↑ 19↓ 370.5%
25K· 15.53 mi
12:14/mi
3:03:39
↑ 66↓ 880.2%
30K· 18.64 mi
12:46/mi
3:43:20
↑ 181↓ 1480.2%
20M
13:22/mi
4:01:30
↑ 64↓ 500.2%
21M
14:44/mi
4:16:14
↑ 106↓ 241.6%
35K· 21.75 mi
11:18/mi
4:24:41
↑ 17↓ 861.7%
23M
13:31/mi
4:41:37
↑ 23↓ 630.6%
24M
12:13/mi
4:53:50
↓ 821.3%
40K· 24.85 mi
12:36/mi
5:04:36
↓ 200.3%
25.2M
13:09/mi
5:09:08
↑ 13↓ 160.2%
Finish· 26.22 mi
10:15/mi
5:19:35
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:33:59
Pace11:45 /mi
2nd Half
Distance13.11 mi
Time2:45:36
Pace12:38 /mi
📊Positive Split: 7.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:53:3435:2411:2435:24
11:24
-
10K
6.21 mi12:29:441:11:3411:3136:10
11:38
+0:14
15K
9.32 mi13:07:281:49:1811:4437:44
12:09
+0:31
20K
12.43 mi13:44:322:26:2211:4737:04
11:56
-0:13
Half
13.11 mi13:52:092:33:5911:457:37
11:10
-0:46
25K
15.53 mi14:21:493:03:3911:4929:40
12:14
+1:04
30K
18.64 mi15:01:303:43:2011:5939:41
12:46
+0:32
20M
20.00 mi15:19:404:01:3012:0418:10
13:22
+0:36
21M
21.00 mi15:34:244:16:1412:1214:44
14:44
+1:22
35K
21.75 mi15:42:514:24:4112:108:27
11:18
-3:26
23M
23.00 mi15:59:474:41:3712:1516:56
13:31
+2:13
24M
24.00 mi16:12:004:53:5012:1512:13
12:13
-1:18
40K
24.85 mi16:22:465:04:3612:1510:46
12:36
+0:23
25.2M
25.20 mi16:27:185:09:0812:164:32
13:09
+0:33
Finish
26.22 mi16:37:455:19:3512:1210:27
10:15
-2:54

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

10:15 /mi

Average Pace

12:12 /mi

Slowest Pace

14:44 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:38:05

31% of race

Time at Steady Pace

2:07:27

40% of race

Time at Slower Pace

1:34:03

29% of race

Average Pace: 12:11 /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 mi11:53:3435:2411:2435:24
11:24
#25156
10K
6.21 mi12:29:441:11:3411:3136:10
11:38
#25048
15K
9.32 mi13:07:281:49:1811:4437:44
12:09
#24991
20K
12.43 mi13:44:322:26:2211:4737:04
11:56
#24785
Half
13.11 mi13:52:092:33:5911:457:37
11:10
#24725
25K
15.53 mi14:21:493:03:3911:4929:40
12:14
#24552
30K
18.64 mi15:01:303:43:2011:5939:41
12:46
#24282
20M
20.00 mi15:19:404:01:3012:0418:10
13:22
#24230
21M
21.00 mi15:34:244:16:1412:1214:44
14:44
#24170
35K
21.75 mi15:42:514:24:4112:108:27
11:18
#24072
23M
23.00 mi15:59:474:41:3712:1516:56
13:31
#24061
24M
24.00 mi16:12:004:53:5012:1512:13
12:13
#23986
40K
24.85 mi16:22:465:04:3612:1510:46
12:36
#23941
25.2M
25.20 mi16:27:185:09:0812:164:32
13:09
#23916
Finish
26.22 mi16:37:455:19:3512:1210:27
10:15
#23821
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi25156144461444624819(Top 97%)14306(Top 98%)14306(Top 295%)
10K6.21 mi3.10 mi25048+10814405+4114405+4124892(Top 97%)14343(Top 98%)14343(Top 296%)
15K9.32 mi3.11 mi24991+5714383+2214383+2224819(Top 97%)14306(Top 98%)14306(Top 295%)
20K12.43 mi3.11 mi24785+20614301+8214301+8223913(Top 94%)13910(Top 95%)13910(Top 287%)
Half13.11 mi0.68 mi24725+6014280+2114280+2123726(Top 93%)13780(Top 95%)13780(Top 284%)
25K15.53 mi2.42 mi24552+17314198+8214198+8223439(Top 92%)13618(Top 93%)13618(Top 281%)
30K18.64 mi3.11 mi24282+27014066+13214066+13223008(Top 90%)13304(Top 91%)13304(Top 274%)
20M20.00 mi1.36 mi24230+5214029+3714029+3723325(Top 91%)13357(Top 92%)13357(Top 275%)
21M21.00 mi1.00 mi24170+6013989+4013989+4023256(Top 91%)13294(Top 91%)13294(Top 274%)
35K21.75 mi0.75 mi24072+9813932+5713932+5720428(Top 80%)11833(Top 81%)11833(Top 244%)
23M23.00 mi1.25 mi24061+1113916+1613916+1623257(Top 91%)13262(Top 91%)13262(Top 273%)
24M24.00 mi1.00 mi23986+7513870+4613870+4621868(Top 86%)12453(Top 85%)12453(Top 257%)
40K24.85 mi0.85 mi23941+4513833+3713833+3721582(Top 84%)12275(Top 84%)12275(Top 253%)
25.2M25.20 mi0.35 mi23916+2513822+1113822+1119989(Top 78%)11444(Top 79%)11444(Top 236%)
Finish26.22 mi1.02 mi23821+9513765+5713765+5719256(Top 75%)11115(Top 76%)11115(Top 229%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 97%
×21story building
+97ft-345ft

Overall

24819

Males

14306

M18-39

14306

5K→10K

3.1 - 6.2 mi

Top 97%
×5story building
+79ft-138ft

Overall

24892

Males

14343

M18-39

14343

10K→15K

6.2 - 9.3 mi

Top 97%
×3story building
+67ft-78ft

Overall

24819

Males

14306

M18-39

14306

15K→20K

9.3 - 12.4 mi

Top 94%
×5story building
+106ft-86ft

Overall

23913

Males

13910

M18-39

13910

20K→Half

12.4 - 13.1 mi

Top 93%
×2story building
+19ft-37ft

Overall

23726

Males

13780

M18-39

13780

Half→25K

13.1 - 15.5 mi

Top 92%
×4story building
+66ft-88ft

Overall

23439

Males

13618

M18-39

13618

25K→30K

15.5 - 18.6 mi

Top 90%
×9story building
+181ft-148ft

Overall

23008

Males

13304

M18-39

13304

30K→20M

18.6 - 20.0 mi

Top 91%
×5story building
+64ft-50ft

Overall

23325

Males

13357

M18-39

13357

20M→21M

20.0 - 21.0 mi

Top 91%
×8story building
+106ft-24ft

Overall

23256

Males

13294

M18-39

13294

21M→35K

21.0 - 21.8 mi

Top 80%
×7story building
+17ft-86ft

Overall

20428

Males

11833

M18-39

11833

35K→23M

21.8 - 23.0 mi

Top 91%
×5story building
+23ft-63ft

Overall

23257

Males

13262

M18-39

13262

23M→24M

23.0 - 24.0 mi

Top 86%
×6story building
+12ft-82ft

Overall

21868

Males

12453

M18-39

12453

24M→40K

24.0 - 24.9 mi

Top 84%
×1story
+6ft-20ft

Overall

21582

Males

12275

M18-39

12275

40K→25.2M

24.9 - 25.2 mi

Top 78%
×1story
+13ft-16ft

Overall

19989

Males

11444

M18-39

11444

25.2M→Finish

25.2 - 26.2 mi

Top 75%
×2story building
+22ft-21ft

Overall

19256

Males

11115

M18-39

11115

Passing Analysis

Category:
Athletes Passed
1511
Passed By
176
Net Change
+1335
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#25156
5K → 10K14739+108#25156#25048
10K → 15K9235+57#25048#24991
15K → 20K2137+206#24991#24785
20K → Half600+60#24785#24725
Half → 25K1818+173#24725#24552
25K → 30K2788+270#24552#24282
30K → 20M6513+52#24282#24230
20M → 21M7313+60#24230#24170
21M → 35K1002+98#24170#24072
35K → 23M4736+11#24072#24061
23M → 24M783+75#24061#23986
24M → 40K527+45#23986#23941
40K → 25.2M283+25#23941#23916
25.2M → Finish972+95#23916#23821
TOTALS1511176+1335
📊

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