Boston Marathon logo
BOSTON MARATHON 2024

David Low

Bib: 7657•M

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 25550
Gender (Male)
#0 / 14578
Masters (Masters Men)
#0 / 9729
Division (M40-44)
#0 / 2009
Race Day Weather
55°/45°F
scattered clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
22:58
Rank: #9865
Start → 5K
22:58 | 7:24/mi
10K· 6.21 mi
46:41
Rank: #10592 (-727)
5K → 10K
23:43 | 7:38/mi
15K· 9.32 mi
1:11:03
Rank: #11145 (-553)
10K → 15K
24:22 | 7:51/mi
20K· 12.43 mi
1:35:33
Rank: #11078 (+67)
15K → 20K
24:30 | 7:53/mi
Half· 13.11 mi
1:40:49
Rank: #11057 (+21)
20K → Half
5:16 | 7:43/mi
25K· 15.53 mi
2:00:46
Rank: #11114 (-57)
Half → 25K
19:57 | 8:14/mi
30K· 18.64 mi
2:29:29
Rank: #11803 (-689)
25K → 30K
28:43 | 9:15/mi
20M
2:43:41
Rank: #12425 (-622)
30K → 20M
14:12 | 10:27/mi
21M
2:54:26
Rank: #12641 (-216)
20M → 21M
10:45 | 10:45/mi
35K· 21.75 mi
3:02:04
Rank: #12879 (-238)
21M → 35K
7:38 | 10:12/mi
23M
3:20:09
Rank: #14561 (-1682)
35K → 23M
18:05 | 14:27/mi
24M
3:35:08
Rank: #15744 (-1183)
23M → 24M
14:59 | 14:59/mi
40K· 24.85 mi
3:42:32
Rank: #15499 (+245)
24M → 40K
7:24 | 8:39/mi
25.2M
3:45:21
Rank: #15272 (+227)
40K → 25.2M
2:49 | 8:10/mi
Finish· 26.22 mi
3:53:30
Rank: #15006 (+266)
25.2M → Finish
8:09 | 8:00/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
Time1:40:49
Pace7:41 /mi
2nd Half
Distance13.11 mi
Time2:12:41
Pace10:07 /mi
📊Positive Split: 31.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:31:3322:587:2422:58
7:24
-
10K
6.21 mi10:55:1646:417:3123:43
7:38
+0:14
15K
9.32 mi11:19:381:11:037:3724:22
7:51
+0:13
20K
12.43 mi11:44:081:35:337:4124:30
7:53
+0:02
Half
13.11 mi11:49:241:40:497:415:16
7:43
-0:10
25K
15.53 mi12:09:212:00:467:4619:57
8:14
+0:31
30K
18.64 mi12:38:042:29:298:0128:43
9:15
+1:01
20M
20.00 mi12:52:162:43:418:1114:12
10:27
+1:12
21M
21.00 mi13:03:012:54:268:1810:45
10:45
+0:18
35K
21.75 mi13:10:393:02:048:227:38
10:12
-0:33
23M
23.00 mi13:28:443:20:098:4218:05
14:27
+4:15
24M
24.00 mi13:43:433:35:088:5814:59
14:59
+0:32
40K
24.85 mi13:51:073:42:328:577:24
8:39
-6:20
25.2M
25.20 mi13:53:563:45:218:572:49
8:10
-0:29
Finish
26.22 mi14:02:053:53:308:558:09
8:00
-0:10

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

7:24 /mi

Average Pace

8:55 /mi

Slowest Pace

14:59 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

0:00

0% of race

Time at Steady Pace

2:47:51

72% of race

Time at Slower Pace

1:05:39

28% of race

Average Pace: 8:54 /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 mi10:31:3322:587:2422:58
7:24
#9865
10K
6.21 mi10:55:1646:417:3123:43
7:38
#10592
15K
9.32 mi11:19:381:11:037:3724:22
7:51
#11145
20K
12.43 mi11:44:081:35:337:4124:30
7:53
#11078
Half
13.11 mi11:49:241:40:497:415:16
7:43
#11057
25K
15.53 mi12:09:212:00:467:4619:57
8:14
#11114
30K
18.64 mi12:38:042:29:298:0128:43
9:15
#11803
20M
20.00 mi12:52:162:43:418:1114:12
10:27
#12425
21M
21.00 mi13:03:012:54:268:1810:45
10:45
#12641
35K
21.75 mi13:10:393:02:048:227:38
10:12
#12879
23M
23.00 mi13:28:443:20:098:4218:05
14:27
#14561
24M
24.00 mi13:43:433:35:088:5814:59
14:59
#15744
40K
24.85 mi13:51:073:42:328:577:24
8:39
#15499
25.2M
25.20 mi13:53:563:45:218:572:49
8:10
#15272
Finish
26.22 mi14:02:053:53:308:558:09
8:00
#15006
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi98657887788712282(Top 48%)8856(Top 61%)8856(Top 441%)
10K6.21 mi3.10 mi10592-7278191-3048191-30411326(Top 44%)8476(Top 58%)8476(Top 422%)
15K9.32 mi3.11 mi11145-5538401-2108401-21012282(Top 48%)8856(Top 61%)8856(Top 441%)
20K12.43 mi3.11 mi11078+678345+568345+5611029(Top 43%)8182(Top 56%)8182(Top 407%)
Half13.11 mi0.68 mi11057+218335+108335+1010745(Top 42%)8074(Top 55%)8074(Top 402%)
25K15.53 mi2.42 mi11114-578302+338302+3311534(Top 45%)8260(Top 57%)8260(Top 411%)
30K18.64 mi3.11 mi11803-6898544-2428544-24214373(Top 56%)9266(Top 64%)9266(Top 461%)
20M20.00 mi1.36 mi12425-6228759-2158759-21517825(Top 70%)10666(Top 73%)10666(Top 531%)
21M21.00 mi1.00 mi12641-2168795-368795-3615616(Top 61%)9461(Top 65%)9461(Top 471%)
35K21.75 mi0.75 mi12879-2388851-568851-5617735(Top 69%)10496(Top 72%)10496(Top 522%)
23M23.00 mi1.25 mi14561-16829507-6569507-65624207(Top 95%)13761(Top 94%)13761(Top 685%)
24M24.00 mi1.00 mi15744-118310011-50410011-50424808(Top 97%)14071(Top 97%)14071(Top 700%)
40K24.85 mi0.85 mi15499+2459863+1489863+1489152(Top 36%)5983(Top 41%)5983(Top 298%)
25.2M25.20 mi0.35 mi15272+2279747+1169747+1163294(Top 13%)2737(Top 19%)2737(Top 136%)
Finish26.22 mi1.02 mi15006+2669601+1469601+1468510(Top 33%)5669(Top 39%)5669(Top 282%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 48%
×21stories
+97ft-345ft

Overall

12282

Males

8856

M40-44

8856

5K→10K

3.1 - 6.2 mi

Top 44%
×5stories
+79ft-138ft

Overall

11326

Males

8476

M40-44

8476

10K→15K

6.2 - 9.3 mi

Top 48%
×3stories
+67ft-78ft

Overall

12282

Males

8856

M40-44

8856

15K→20K

9.3 - 12.4 mi

Top 43%
×5stories
+106ft-86ft

Overall

11029

Males

8182

M40-44

8182

20K→Half

12.4 - 13.1 mi

Top 42%
×2stories
+19ft-37ft

Overall

10745

Males

8074

M40-44

8074

Half→25K

13.1 - 15.5 mi

Top 45%
×4stories
+66ft-88ft

Overall

11534

Males

8260

M40-44

8260

25K→30K

15.5 - 18.6 mi

Top 56%
×9stories
+181ft-148ft

Overall

14373

Males

9266

M40-44

9266

30K→20M

18.6 - 20.0 mi

Top 70%
×5stories
+64ft-50ft

Overall

17825

Males

10666

M40-44

10666

20M→21M

20.0 - 21.0 mi

Top 61%
×8stories
+106ft-24ft

Overall

15616

Males

9461

M40-44

9461

21M→35K

21.0 - 21.8 mi

Top 69%
×7stories
+17ft-86ft

Overall

17735

Males

10496

M40-44

10496

35K→23M

21.8 - 23.0 mi

Top 95%
×5stories
+23ft-63ft

Overall

24207

Males

13761

M40-44

13761

23M→24M

23.0 - 24.0 mi

Top 97%
×6stories
+12ft-82ft

Overall

24808

Males

14071

M40-44

14071

24M→40K

24.0 - 24.9 mi

Top 36%
×1story
+6ft-20ft

Overall

9152

Males

5983

M40-44

5983

40K→25.2M

24.9 - 25.2 mi

Top 13%
×1story
+13ft-16ft

Overall

3294

Males

2737

M40-44

2737

25.2M→Finish

25.2 - 26.2 mi

Top 33%
×2stories
+22ft-21ft

Overall

8510

Males

5669

M40-44

5669

Passing Analysis

Category:
Athletes Passed
1665
Passed By
6804
Net Change
-5141
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9865
5K → 10K76801-727#9865#10592
10K → 15K83636-553#10592#11145
15K → 20K253186+67#11145#11078
20K → Half4423+21#11078#11057
Half → 25K202259-57#11057#11114
25K → 30K121810-689#11114#11803
30K → 20M40662-622#11803#12425
20M → 21M66282-216#12425#12641
21M → 35K32270-238#12641#12879
35K → 23M51687-1682#12879#14561
23M → 24M41187-1183#14561#15744
24M → 40K2450+245#15744#15499
40K → 25.2M2270+227#15499#15272
25.2M → Finish2671+266#15272#15006
TOTALS16656804-5141
📊

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