Boston Marathon logo
BOSTON MARATHON 2024

Sai Wah Felix Ng

Bib: 2166•M

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 25550
Top 26%
Gender (Male)
#0 / 14578
Top 37%
Division (M18-39)
#0 / 4849
Race Day Weather
55°/45°F
scattered clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
19:08
Rank: #1450
Start → 5K
19:08 | 6:10/mi
10K· 6.21 mi
38:54
Rank: #1803 (-353)
5K → 10K
19:46 | 6:22/mi
15K· 9.32 mi
58:56
Rank: #1970 (-167)
10K → 15K
20:02 | 6:27/mi
20K· 12.43 mi
1:19:27
Rank: #2131 (-161)
15K → 20K
20:31 | 6:36/mi
Half· 13.11 mi
1:23:56
Rank: #2166 (-35)
20K → Half
4:29 | 6:34/mi
25K· 15.53 mi
1:40:40
Rank: #2359 (-193)
Half → 25K
16:44 | 6:54/mi
30K· 18.64 mi
2:03:41
Rank: #2670 (-311)
25K → 30K
23:01 | 7:25/mi
20M
2:15:38
Rank: #3325 (-655)
30K → 20M
11:57 | 8:48/mi
21M
2:26:34
Rank: #4194 (-869)
20M → 21M
10:56 | 10:56/mi
35K· 21.75 mi
2:33:53
Rank: #4628 (-434)
21M → 35K
7:19 | 9:47/mi
23M
2:45:08
Rank: #4868 (-240)
35K → 23M
11:15 | 8:59/mi
24M
2:54:48
Rank: #5232 (-364)
23M → 24M
9:40 | 9:40/mi
40K· 24.85 mi
3:04:40
Rank: #5857 (-625)
24M → 40K
9:52 | 11:32/mi
25.2M
3:09:09
Rank: #6179 (-322)
40K → 25.2M
4:29 | 13:00/mi
Finish· 26.22 mi
3:18:43
Rank: #6581 (-402)
25.2M → Finish
9:34 | 9:23/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
Time1:23:56
Pace6:24 /mi
2nd Half
Distance13.11 mi
Time1:54:47
Pace8:45 /mi
📊Positive Split: 36.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:20:4019:086:1019:08
6:10
-
10K
6.21 mi10:40:2638:546:1619:46
6:22
+0:12
15K
9.32 mi11:00:2858:566:1920:02
6:27
+0:05
20K
12.43 mi11:20:591:19:276:2420:31
6:36
+0:09
Half
13.11 mi11:25:281:23:566:244:29
6:34
-0:02
25K
15.53 mi11:42:121:40:406:2916:44
6:54
+0:20
30K
18.64 mi12:05:132:03:416:3823:01
7:25
+0:31
20M
20.00 mi12:17:102:15:386:4711:57
8:48
+1:23
21M
21.00 mi12:28:062:26:346:5910:56
10:56
+2:08
35K
21.75 mi12:35:252:33:537:057:19
9:47
-1:09
23M
23.00 mi12:46:402:45:087:1111:15
8:59
-0:48
24M
24.00 mi12:56:202:54:487:179:40
9:40
+0:41
40K
24.85 mi13:06:123:04:407:269:52
11:32
+1:52
25.2M
25.20 mi13:10:413:09:097:304:29
13:00
+1:28
Finish
26.22 mi13:20:153:18:437:359:34
9:23
-3:37

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

6:10 /mi

Average Pace

7:35 /mi

Slowest Pace

13:00 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:03:41

62% of race

Time at Steady Pace

49:45

25% of race

Time at Slower Pace

25:17

13% of race

Average Pace: 7:35 /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 mi10:20:4019:086:1019:08
6:10
#1450
10K
6.21 mi10:40:2638:546:1619:46
6:22
#1803
15K
9.32 mi11:00:2858:566:1920:02
6:27
#1970
20K
12.43 mi11:20:591:19:276:2420:31
6:36
#2131
Half
13.11 mi11:25:281:23:566:244:29
6:34
#2166
25K
15.53 mi11:42:121:40:406:2916:44
6:54
#2359
30K
18.64 mi12:05:132:03:416:3823:01
7:25
#2670
20M
20.00 mi12:17:102:15:386:4711:57
8:48
#3325
21M
21.00 mi12:28:062:26:346:5910:56
10:56
#4194
35K
21.75 mi12:35:252:33:537:057:19
9:47
#4628
23M
23.00 mi12:46:402:45:087:1111:15
8:59
#4868
24M
24.00 mi12:56:202:54:487:179:40
9:40
#5232
40K
24.85 mi13:06:123:04:407:269:52
11:32
#5857
25.2M
25.20 mi13:10:413:09:097:304:29
13:00
#6179
Finish
26.22 mi13:20:153:18:437:359:34
9:23
#6581
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi1450139913992449(Top 10%)2357(Top 16%)2357(Top 49%)
10K6.21 mi3.10 mi1803-3531744-3451744-3452226(Top 9%)2147(Top 15%)2147(Top 44%)
15K9.32 mi3.11 mi1970-1671905-1611905-1612449(Top 10%)2357(Top 16%)2357(Top 49%)
20K12.43 mi3.11 mi2131-1612060-1552060-1552657(Top 10%)2541(Top 17%)2541(Top 52%)
Half13.11 mi0.68 mi2166-352092-322092-323053(Top 12%)2909(Top 20%)2909(Top 60%)
25K15.53 mi2.42 mi2359-1932266-1742266-1743818(Top 15%)3547(Top 24%)3547(Top 73%)
30K18.64 mi3.11 mi2670-3112541-2752541-2754674(Top 18%)4118(Top 28%)4118(Top 85%)
20M20.00 mi1.36 mi3325-6553129-5883129-58811023(Top 43%)7507(Top 51%)7507(Top 155%)
21M21.00 mi1.00 mi4194-8693872-7433872-74316150(Top 63%)9710(Top 67%)9710(Top 200%)
35K21.75 mi0.75 mi4628-4344217-3454217-34516441(Top 64%)9811(Top 67%)9811(Top 202%)
23M23.00 mi1.25 mi4868-2404367-1504367-15011057(Top 43%)7094(Top 49%)7094(Top 146%)
24M24.00 mi1.00 mi5232-3644605-2384605-23815120(Top 59%)9065(Top 62%)9065(Top 187%)
40K24.85 mi0.85 mi5857-6255008-4035008-40319401(Top 76%)11145(Top 76%)11145(Top 230%)
25.2M25.20 mi0.35 mi6179-3225203-1955203-19519647(Top 77%)11251(Top 77%)11251(Top 232%)
Finish26.22 mi1.02 mi6581-4025429-2265429-22615988(Top 63%)9438(Top 65%)9438(Top 195%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 10%
×21stories
+97ft-345ft

Overall

2449

Males

2357

M18-39

2357

5K→10K

3.1 - 6.2 mi

Top 9%
×5stories
+79ft-138ft

Overall

2226

Males

2147

M18-39

2147

10K→15K

6.2 - 9.3 mi

Top 10%
×3stories
+67ft-78ft

Overall

2449

Males

2357

M18-39

2357

15K→20K

9.3 - 12.4 mi

Top 10%
×5stories
+106ft-86ft

Overall

2657

Males

2541

M18-39

2541

20K→Half

12.4 - 13.1 mi

Top 12%
×2stories
+19ft-37ft

Overall

3053

Males

2909

M18-39

2909

Half→25K

13.1 - 15.5 mi

Top 15%
×4stories
+66ft-88ft

Overall

3818

Males

3547

M18-39

3547

25K→30K

15.5 - 18.6 mi

Top 18%
×9stories
+181ft-148ft

Overall

4674

Males

4118

M18-39

4118

30K→20M

18.6 - 20.0 mi

Top 43%
×5stories
+64ft-50ft

Overall

11023

Males

7507

M18-39

7507

20M→21M

20.0 - 21.0 mi

Top 63%
×8stories
+106ft-24ft

Overall

16150

Males

9710

M18-39

9710

21M→35K

21.0 - 21.8 mi

Top 64%
×7stories
+17ft-86ft

Overall

16441

Males

9811

M18-39

9811

35K→23M

21.8 - 23.0 mi

Top 43%
×5stories
+23ft-63ft

Overall

11057

Males

7094

M18-39

7094

23M→24M

23.0 - 24.0 mi

Top 59%
×6stories
+12ft-82ft

Overall

15120

Males

9065

M18-39

9065

24M→40K

24.0 - 24.9 mi

Top 76%
×1story
+6ft-20ft

Overall

19401

Males

11145

M18-39

11145

40K→25.2M

24.9 - 25.2 mi

Top 77%
×1story
+13ft-16ft

Overall

19647

Males

11251

M18-39

11251

25.2M→Finish

25.2 - 26.2 mi

Top 63%
×2stories
+22ft-21ft

Overall

15988

Males

9438

M18-39

9438

Passing Analysis

Category:
Athletes Passed
291
Passed By
5422
Net Change
-5131
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#1450
5K → 10K9362-353#1450#1803
10K → 15K35202-167#1803#1970
15K → 20K45206-161#1970#2131
20K → Half540-35#2131#2166
Half → 25K41234-193#2166#2359
25K → 30K63374-311#2359#2670
30K → 20M12667-655#2670#3325
20M → 21M7876-869#3325#4194
21M → 35K6440-434#4194#4628
35K → 23M31271-240#4628#4868
23M → 24M15379-364#4868#5232
24M → 40K8633-625#5232#5857
40K → 25.2M2324-322#5857#6179
25.2M → Finish12414-402#6179#6581
TOTALS2915422-5131
📊

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