Boston Marathon logo
BOSTON MARATHON 2024

Nathan Kim

Bib: 4604•M

MA

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 25550
Top 14%
Gender (Male)
#0 / 14578
Top 23%
Division (M18-39)
#0 / 4849
Top 45%
Race Day Weather
55°/45°F
scattered clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:06
Rank: #3128
Start → 5K
20:06 | 6:28/mi
10K· 6.21 mi
40:07
Rank: #2868 (+260)
5K → 10K
20:01 | 6:27/mi
15K· 9.32 mi
1:00:08
Rank: #2667 (+201)
10K → 15K
20:01 | 6:27/mi
20K· 12.43 mi
1:20:37
Rank: #2608 (+59)
15K → 20K
20:29 | 6:36/mi
Half· 13.11 mi
1:25:02
Rank: #2595 (+13)
20K → Half
4:25 | 6:28/mi
25K· 15.53 mi
1:41:23
Rank: #2591 (+4)
Half → 25K
16:21 | 6:45/mi
30K· 18.64 mi
2:03:28
Rank: #2614 (-23)
25K → 30K
22:05 | 7:06/mi
20M
2:13:34
Rank: #2710 (-96)
30K → 20M
10:06 | 7:26/mi
21M
2:21:44
Rank: #2832 (-122)
20M → 21M
8:10 | 8:10/mi
35K· 21.75 mi
2:27:29
Rank: #2947 (-115)
21M → 35K
5:45 | 7:41/mi
23M
2:37:37
Rank: #3153 (-206)
35K → 23M
10:08 | 8:06/mi
24M
2:45:22
Rank: #3230 (-77)
23M → 24M
7:45 | 7:45/mi
40K· 24.85 mi
2:52:52
Rank: #3428 (-198)
24M → 40K
7:30 | 8:46/mi
25.2M
2:56:14
Rank: #3488 (-60)
40K → 25.2M
3:22 | 9:46/mi
Finish· 26.22 mi
3:04:33
Rank: #3616 (-128)
25.2M → Finish
8:19 | 8:10/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
Time1:25:02
Pace6:29 /mi
2nd Half
Distance13.11 mi
Time1:39:31
Pace7:35 /mi
📊Positive Split: 17.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:23:1120:066:2820:06
6:28
-
10K
6.21 mi10:43:1240:076:2720:01
6:27
-0:01
15K
9.32 mi11:03:131:00:086:2720:01
6:27
0:00
20K
12.43 mi11:23:421:20:376:2920:29
6:36
+0:09
Half
13.11 mi11:28:071:25:026:294:25
6:28
-0:08
25K
15.53 mi11:44:281:41:236:3216:21
6:45
+0:17
30K
18.64 mi12:06:332:03:286:3722:05
7:06
+0:21
20M
20.00 mi12:16:392:13:346:4110:06
7:26
+0:20
21M
21.00 mi12:24:492:21:446:458:10
8:10
+0:44
35K
21.75 mi12:30:342:27:296:475:45
7:41
-0:29
23M
23.00 mi12:40:422:37:376:5110:08
8:06
+0:25
24M
24.00 mi12:48:272:45:226:537:45
7:45
-0:21
40K
24.85 mi12:55:572:52:526:577:30
8:46
+1:01
25.2M
25.20 mi12:59:192:56:147:003:22
9:46
+1:00
Finish
26.22 mi13:07:383:04:337:038:19
8:10
-1:36

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

6:27 /mi

Average Pace

7:03 /mi

Slowest Pace

9:46 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:41:23

55% of race

Time at Steady Pace

45:41

25% of race

Time at Slower Pace

37:29

20% of race

Average Pace: 7:02 /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 mi10:23:1120:066:2820:06
6:28
#3128
10K
6.21 mi10:43:1240:076:2720:01
6:27
#2868
15K
9.32 mi11:03:131:00:086:2720:01
6:27
#2667
20K
12.43 mi11:23:421:20:376:2920:29
6:36
#2608
Half
13.11 mi11:28:071:25:026:294:25
6:28
#2595
25K
15.53 mi11:44:281:41:236:3216:21
6:45
#2591
30K
18.64 mi12:06:332:03:286:3722:05
7:06
#2614
20M
20.00 mi12:16:392:13:346:4110:06
7:26
#2710
21M
21.00 mi12:24:492:21:446:458:10
8:10
#2832
35K
21.75 mi12:30:342:27:296:475:45
7:41
#2947
23M
23.00 mi12:40:422:37:376:5110:08
8:06
#3153
24M
24.00 mi12:48:272:45:226:537:45
7:45
#3230
40K
24.85 mi12:55:572:52:526:577:30
8:46
#3428
25.2M
25.20 mi12:59:192:56:147:003:22
9:46
#3488
Finish
26.22 mi13:07:383:04:337:038:19
8:10
#3616
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi3128298429842415(Top 9%)2325(Top 16%)2325(Top 48%)
10K6.21 mi3.10 mi2868+2602746+2382746+2382666(Top 10%)2554(Top 18%)2554(Top 53%)
15K9.32 mi3.11 mi2667+2012561+1852561+1852415(Top 9%)2325(Top 16%)2325(Top 48%)
20K12.43 mi3.11 mi2608+592502+592502+592597(Top 10%)2482(Top 17%)2482(Top 51%)
Half13.11 mi0.68 mi2595+132489+132489+132503(Top 10%)2398(Top 16%)2398(Top 49%)
25K15.53 mi2.42 mi2591+42475+142475+142882(Top 11%)2719(Top 19%)2719(Top 56%)
30K18.64 mi3.11 mi2614-232487-122487-123381(Top 13%)3106(Top 21%)3106(Top 64%)
20M20.00 mi1.36 mi2710-962573-862573-864038(Top 16%)3576(Top 25%)3576(Top 74%)
21M21.00 mi1.00 mi2832-1222681-1082681-1084758(Top 19%)3938(Top 27%)3938(Top 81%)
35K21.75 mi0.75 mi2947-1152782-1012782-1015972(Top 23%)4654(Top 32%)4654(Top 96%)
23M23.00 mi1.25 mi3153-2062951-1692951-1696198(Top 24%)4636(Top 32%)4636(Top 96%)
24M24.00 mi1.00 mi3230-773012-613012-615253(Top 21%)4048(Top 28%)4048(Top 83%)
40K24.85 mi0.85 mi3428-1983169-1573169-1579690(Top 38%)6241(Top 43%)6241(Top 129%)
25.2M25.20 mi0.35 mi3488-603216-473216-479809(Top 38%)6219(Top 43%)6219(Top 128%)
Finish26.22 mi1.02 mi3616-1283311-953311-959513(Top 37%)6196(Top 43%)6196(Top 128%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 9%
×21stories
+97ft-345ft

Overall

2415

Males

2325

M18-39

2325

5K→10K

3.1 - 6.2 mi

Top 10%
×5stories
+79ft-138ft

Overall

2666

Males

2554

M18-39

2554

10K→15K

6.2 - 9.3 mi

Top 9%
×3stories
+67ft-78ft

Overall

2415

Males

2325

M18-39

2325

15K→20K

9.3 - 12.4 mi

Top 10%
×5stories
+106ft-86ft

Overall

2597

Males

2482

M18-39

2482

20K→Half

12.4 - 13.1 mi

Top 10%
×2stories
+19ft-37ft

Overall

2503

Males

2398

M18-39

2398

Half→25K

13.1 - 15.5 mi

Top 11%
×4stories
+66ft-88ft

Overall

2882

Males

2719

M18-39

2719

25K→30K

15.5 - 18.6 mi

Top 13%
×9stories
+181ft-148ft

Overall

3381

Males

3106

M18-39

3106

30K→20M

18.6 - 20.0 mi

Top 16%
×5stories
+64ft-50ft

Overall

4038

Males

3576

M18-39

3576

20M→21M

20.0 - 21.0 mi

Top 19%
×8stories
+106ft-24ft

Overall

4758

Males

3938

M18-39

3938

21M→35K

21.0 - 21.8 mi

Top 23%
×7stories
+17ft-86ft

Overall

5972

Males

4654

M18-39

4654

35K→23M

21.8 - 23.0 mi

Top 24%
×5stories
+23ft-63ft

Overall

6198

Males

4636

M18-39

4636

23M→24M

23.0 - 24.0 mi

Top 21%
×6stories
+12ft-82ft

Overall

5253

Males

4048

M18-39

4048

24M→40K

24.0 - 24.9 mi

Top 38%
×1story
+6ft-20ft

Overall

9690

Males

6241

M18-39

6241

40K→25.2M

24.9 - 25.2 mi

Top 38%
×1story
+13ft-16ft

Overall

9809

Males

6219

M18-39

6219

25.2M→Finish

25.2 - 26.2 mi

Top 37%
×2stories
+22ft-21ft

Overall

9513

Males

6196

M18-39

6196

Passing Analysis

Category:
Athletes Passed
1102
Passed By
1590
Net Change
-488
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#3128
5K → 10K29030+260#3128#2868
10K → 15K22726+201#2868#2667
15K → 20K11859+59#2667#2608
20K → Half2310+13#2608#2595
Half → 25K9490+4#2595#2591
25K → 30K121144-23#2591#2614
30K → 20M44140-96#2614#2710
20M → 21M37159-122#2710#2832
21M → 35K26141-115#2832#2947
35K → 23M39245-206#2947#3153
23M → 24M33110-77#3153#3230
24M → 40K15213-198#3230#3428
40K → 25.2M1272-60#3428#3488
25.2M → Finish23151-128#3488#3616
TOTALS11021590-488
📊

Passing Visuals

Category:

📈Position Graph

Loading...

🎨Heatmap Timeline

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