Boston Marathon logo
BOSTON MARATHON 2024

Jonah Nielsen

Bib: 25280•M

NY

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 25550
Top 21%
Gender (Male)
#0 / 14578
Top 31%
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
20:54
Rank: #5046
Start → 5K
6:44/mi
20:54 split
10K· 6.21 mi
41:45
Rank: #4705 (+341)
5K → 10K
6:43/mi
20:51 split
15K· 9.32 mi
1:02:46
Rank: #4589 (+116)
10K → 15K
6:46/mi
21:01 split
20K· 12.43 mi
1:24:52
Rank: #5002 (-413)
15K → 20K
7:07/mi
22:06 split
Half· 13.11 mi
1:29:35
Rank: #5023 (-21)
20K → Half
6:55/mi
4:43 split
25K· 15.53 mi
1:47:31
Rank: #5223 (-200)
Half → 25K
7:24/mi
17:56 split
30K· 18.64 mi
2:11:25
Rank: #5296 (-73)
25K → 30K
7:42/mi
23:54 split
20M
2:22:18
Rank: #5329 (-33)
30K → 20M
8:01/mi
10:53 split
21M
2:30:34
Rank: #5235 (+94)
20M → 21M
8:16/mi
8:16 split
35K· 21.75 mi
2:36:23
Rank: #5220 (+15)
21M → 35K
7:46/mi
5:49 split
23M
2:46:38
Rank: #5200 (+20)
35K → 23M
8:11/mi
10:15 split
24M
2:54:37
Rank: #5186 (+14)
23M → 24M
7:59/mi
7:59 split
40K· 24.85 mi
3:01:32
Rank: #5135 (+51)
24M → 40K
8:05/mi
6:55 split
25.2M
3:04:46
Rank: #5161 (-26)
40K → 25.2M
9:23/mi
3:14 split
Finish· 26.22 mi
3:13:07
Rank: #5261 (-100)
25.2M → Finish
8:12/mi
8:21 split

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
Time1:29:35
Pace6:50 /mi
2nd Half
Distance13.11 mi
Time1:43:32
Pace7:54 /mi
📊Positive Split: 15.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:36:0820:546:4420:54
6:44
-
10K
6.21 mi11:56:5941:456:4320:51
6:43
-0:01
15K
9.32 mi12:18:001:02:466:4421:01
6:46
+0:03
20K
12.43 mi12:40:061:24:526:5022:06
7:07
+0:21
Half
13.11 mi12:44:491:29:356:504:43
6:55
-0:12
25K
15.53 mi13:02:451:47:316:5517:56
7:24
+0:29
30K
18.64 mi13:26:392:11:257:0323:54
7:42
+0:18
20M
20.00 mi13:37:322:22:187:0710:53
8:01
+0:19
21M
21.00 mi13:45:482:30:347:108:16
8:16
+0:15
35K
21.75 mi13:51:372:36:237:115:49
7:46
-0:30
23M
23.00 mi14:01:522:46:387:1510:15
8:11
+0:25
24M
24.00 mi14:09:512:54:377:177:59
7:59
-0:12
40K
24.85 mi14:16:463:01:327:186:55
8:05
+0:06
25.2M
25.20 mi14:20:003:04:467:203:14
9:23
+1:18
Finish
26.22 mi14:28:213:13:077:228:21
8:12
-1:11

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

6:43 /mi

Average Pace

7:22 /mi

Slowest Pace

9:23 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:47:31

56% of race

Time at Steady Pace

55:30

29% of race

Time at Slower Pace

30:06

16% of race

Average Pace: 7:22 /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 mi11:36:0820:546:4420:54
6:44
#5046
10K
6.21 mi11:56:5941:456:4320:51
6:43
#4705
15K
9.32 mi12:18:001:02:466:4421:01
6:46
#4589
20K
12.43 mi12:40:061:24:526:5022:06
7:07
#5002
Half
13.11 mi12:44:491:29:356:504:43
6:55
#5023
25K
15.53 mi13:02:451:47:316:5517:56
7:24
#5223
30K
18.64 mi13:26:392:11:257:0323:54
7:42
#5296
20M
20.00 mi13:37:322:22:187:0710:53
8:01
#5329
21M
21.00 mi13:45:482:30:347:108:16
8:16
#5235
35K
21.75 mi13:51:372:36:237:115:49
7:46
#5220
23M
23.00 mi14:01:522:46:387:1510:15
8:11
#5200
24M
24.00 mi14:09:512:54:377:177:59
7:59
#5186
40K
24.85 mi14:16:463:01:327:186:55
8:05
#5135
25.2M
25.20 mi14:20:003:04:467:203:14
9:23
#5161
Finish
26.22 mi14:28:213:13:077:228:21
8:12
#5261
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi5046467446744434(Top 17%)4136(Top 28%)4136(Top 85%)
10K6.21 mi3.10 mi4705+3414387+2874387+2874418(Top 17%)4131(Top 28%)4131(Top 85%)
15K9.32 mi3.11 mi4589+1164279+1084279+1084434(Top 17%)4136(Top 28%)4136(Top 85%)
20K12.43 mi3.11 mi5002-4134628-3494628-3495876(Top 23%)5232(Top 36%)5232(Top 108%)
Half13.11 mi0.68 mi5023-214643-154643-155246(Top 21%)4760(Top 33%)4760(Top 98%)
25K15.53 mi2.42 mi5223-2004771-1284771-1286372(Top 25%)5425(Top 37%)5425(Top 112%)
30K18.64 mi3.11 mi5296-734781-104781-106093(Top 24%)5066(Top 35%)5066(Top 104%)
20M20.00 mi1.36 mi5329-334786-54786-56784(Top 27%)5305(Top 36%)5305(Top 109%)
21M21.00 mi1.00 mi5235+944689+974689+975181(Top 20%)4207(Top 29%)4207(Top 87%)
35K21.75 mi0.75 mi5220+154658+314658+316428(Top 25%)4917(Top 34%)4917(Top 101%)
23M23.00 mi1.25 mi5200+204607+514607+516693(Top 26%)4910(Top 34%)4910(Top 101%)
24M24.00 mi1.00 mi5186+144573+344573+346530(Top 26%)4730(Top 32%)4730(Top 98%)
40K24.85 mi0.85 mi5135+514505+684505+686204(Top 24%)4434(Top 30%)4434(Top 91%)
25.2M25.20 mi0.35 mi5161-26450545058161(Top 32%)5390(Top 37%)5390(Top 111%)
Finish26.22 mi1.02 mi5261-1004549-444549-449705(Top 38%)6304(Top 43%)6304(Top 130%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 17%
×21stories
+97ft-345ft

Overall

4434

Males

4136

M18-39

4136

5K→10K

3.1 - 6.2 mi

Top 17%
×5stories
+79ft-138ft

Overall

4418

Males

4131

M18-39

4131

10K→15K

6.2 - 9.3 mi

Top 17%
×3stories
+67ft-78ft

Overall

4434

Males

4136

M18-39

4136

15K→20K

9.3 - 12.4 mi

Top 23%
×5stories
+106ft-86ft

Overall

5876

Males

5232

M18-39

5232

20K→Half

12.4 - 13.1 mi

Top 21%
×2stories
+19ft-37ft

Overall

5246

Males

4760

M18-39

4760

Half→25K

13.1 - 15.5 mi

Top 25%
×4stories
+66ft-88ft

Overall

6372

Males

5425

M18-39

5425

25K→30K

15.5 - 18.6 mi

Top 24%
×9stories
+181ft-148ft

Overall

6093

Males

5066

M18-39

5066

30K→20M

18.6 - 20.0 mi

Top 27%
×5stories
+64ft-50ft

Overall

6784

Males

5305

M18-39

5305

20M→21M

20.0 - 21.0 mi

Top 20%
×8stories
+106ft-24ft

Overall

5181

Males

4207

M18-39

4207

21M→35K

21.0 - 21.8 mi

Top 25%
×7stories
+17ft-86ft

Overall

6428

Males

4917

M18-39

4917

35K→23M

21.8 - 23.0 mi

Top 26%
×5stories
+23ft-63ft

Overall

6693

Males

4910

M18-39

4910

23M→24M

23.0 - 24.0 mi

Top 26%
×6stories
+12ft-82ft

Overall

6530

Males

4730

M18-39

4730

24M→40K

24.0 - 24.9 mi

Top 24%
×1story
+6ft-20ft

Overall

6204

Males

4434

M18-39

4434

40K→25.2M

24.9 - 25.2 mi

Top 32%
×1story
+13ft-16ft

Overall

8161

Males

5390

M18-39

5390

25.2M→Finish

25.2 - 26.2 mi

Top 38%
×2stories
+22ft-21ft

Overall

9705

Males

6304

M18-39

6304

Passing Analysis

Category:
Athletes Passed
1604
Passed By
1819
Net Change
-215
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5046
5K → 10K39352+341#5046#4705
10K → 15K19074+116#4705#4589
15K → 20K75488-413#4589#5002
20K → Half2849-21#5002#5023
Half → 25K117317-200#5023#5223
25K → 30K158231-73#5223#5296
30K → 20M82115-33#5296#5329
20M → 21M13036+94#5329#5235
21M → 35K7358+15#5235#5220
35K → 23M11292+20#5220#5200
23M → 24M7662+14#5200#5186
24M → 40K10453+51#5186#5135
40K → 25.2M2652-26#5135#5161
25.2M → Finish40140-100#5161#5261
TOTALS16041819-215
📊

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