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BOSTON MARATHON 2025

Nolan Greth

Bib: 1831•M

TX

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 7%
Gender (Male)
#0 / 16105
Top 12%
Division (M18-39)
#0 / 5642
Top 28%
Race Day Weather
50°/40°F
broken 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
6:10/mi
19:10
↑ 97↓ 3451.5%
10K· 6.21 mi
6:07/mi
38:09
↑ 79↓ 1380.4%
15K· 9.32 mi
6:05/mi
57:04
↑ 67↓ 78
20K· 12.43 mi
6:05/mi
1:15:58
↑ 106↓ 860.1%
Half· 13.11 mi
6:02/mi
1:20:05
↑ 19↓ 370.5%
25K· 15.53 mi
6:08/mi
1:34:58
↑ 66↓ 880.2%
30K· 18.64 mi
6:23/mi
1:54:47
↑ 181↓ 1480.2%
20M
6:52/mi
2:04:07
↑ 64↓ 500.2%
21M
7:36/mi
2:11:43
↑ 106↓ 241.6%
35K· 21.75 mi
6:56/mi
2:16:54
↑ 17↓ 861.7%
23M
7:15/mi
2:25:59
↑ 23↓ 630.6%
24M
7:16/mi
2:33:15
↓ 821.3%
40K· 24.85 mi
7:10/mi
2:39:23
↓ 200.3%
25.2M
7:47/mi
2:42:04
↑ 13↓ 160.2%
Finish· 26.22 mi
6:30/mi
2:48:41
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:20:05
Pace6:07 /mi
2nd Half
Distance13.11 mi
Time1:28:36
Pace6:46 /mi
📊Positive Split: 10.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:19:3919:106:1019:10
6:10
-
10K
6.21 mi10:38:3838:096:0818:59
6:07
-0:03
15K
9.32 mi10:57:3357:046:0718:55
6:05
-0:02
20K
12.43 mi11:16:271:15:586:0718:54
6:05
0:00
Half
13.11 mi11:20:341:20:056:074:07
6:02
-0:03
25K
15.53 mi11:35:271:34:586:0714:53
6:08
+0:06
30K
18.64 mi11:55:161:54:476:0919:49
6:23
+0:15
20M
20.00 mi12:04:362:04:076:129:20
6:52
+0:29
21M
21.00 mi12:12:122:11:436:167:36
7:36
+0:44
35K
21.75 mi12:17:232:16:546:185:11
6:56
-0:40
23M
23.00 mi12:26:282:25:596:219:05
7:15
+0:19
24M
24.00 mi12:33:442:33:156:237:16
7:16
+0:01
40K
24.85 mi12:39:522:39:236:256:08
7:10
-0:06
25.2M
25.20 mi12:42:332:42:046:262:41
7:47
+0:37
Finish
26.22 mi12:49:102:48:416:266:37
6:30
-1:17

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

6:02 /mi

Average Pace

6:26 /mi

Slowest Pace

7:47 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:34:58

56% of race

Time at Steady Pace

26:26

16% of race

Time at Slower Pace

47:17

28% of race

Average Pace: 6:26 /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 mi10:19:3919:106:1019:10
6:10
#1687
10K
6.21 mi10:38:3838:096:0818:59
6:07
#1590
15K
9.32 mi10:57:3357:046:0718:55
6:05
#1493
20K
12.43 mi11:16:271:15:586:0718:54
6:05
#1388
Half
13.11 mi11:20:341:20:056:074:07
6:02
#1372
25K
15.53 mi11:35:271:34:586:0714:53
6:08
#1327
30K
18.64 mi11:55:161:54:476:0919:49
6:23
#1326
20M
20.00 mi12:04:362:04:076:129:20
6:52
#1411
21M
21.00 mi12:12:122:11:436:167:36
7:36
#1552
35K
21.75 mi12:17:232:16:546:185:11
6:56
#1632
23M
23.00 mi12:26:282:25:596:219:05
7:15
#1762
24M
24.00 mi12:33:442:33:156:237:16
7:16
#1904
40K
24.85 mi12:39:522:39:236:256:08
7:10
#1968
25.2M
25.20 mi12:42:332:42:046:262:41
7:47
#2000
Finish
26.22 mi12:49:102:48:416:266:37
6:30
#2004
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi1687160316031328(Top 5%)1261(Top 8%)1261(Top 22%)
10K6.21 mi3.10 mi1590+971512+911512+911507(Top 5%)1430(Top 9%)1430(Top 25%)
15K9.32 mi3.11 mi1493+971418+941418+941328(Top 5%)1261(Top 8%)1261(Top 22%)
20K12.43 mi3.11 mi1388+1051317+1011317+1011122(Top 4%)1058(Top 7%)1058(Top 19%)
Half13.11 mi0.68 mi1372+161302+151302+151295(Top 5%)1229(Top 8%)1229(Top 22%)
25K15.53 mi2.42 mi1327+451256+461256+461247(Top 4%)1180(Top 7%)1180(Top 21%)
30K18.64 mi3.11 mi1326+11251+51251+51470(Top 5%)1391(Top 9%)1391(Top 25%)
20M20.00 mi1.36 mi1411-851331-801331-803278(Top 12%)3029(Top 19%)3029(Top 54%)
21M21.00 mi1.00 mi1552-1411469-1381469-1385083(Top 18%)4429(Top 28%)4429(Top 79%)
35K21.75 mi0.75 mi1632-801547-781547-784842(Top 17%)4254(Top 26%)4254(Top 75%)
23M23.00 mi1.25 mi1762-1301671-1241671-1245175(Top 18%)4426(Top 27%)4426(Top 78%)
24M24.00 mi1.00 mi1904-1421806-1351806-1356180(Top 22%)5012(Top 31%)5012(Top 89%)
40K24.85 mi0.85 mi1968-641866-601866-604852(Top 17%)4096(Top 25%)4096(Top 73%)
25.2M25.20 mi0.35 mi2000-321898-321898-324658(Top 16%)3856(Top 24%)3856(Top 68%)
Finish26.22 mi1.02 mi2004-41900-21900-22760(Top 10%)2467(Top 15%)2467(Top 44%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 5%
×21story building
+97ft-345ft

Overall

1328

Males

1261

M18-39

1261

5K→10K

3.1 - 6.2 mi

Top 5%
×5story building
+79ft-138ft

Overall

1507

Males

1430

M18-39

1430

10K→15K

6.2 - 9.3 mi

Top 5%
×3story building
+67ft-78ft

Overall

1328

Males

1261

M18-39

1261

15K→20K

9.3 - 12.4 mi

Top 4%
×5story building
+106ft-86ft

Overall

1122

Males

1058

M18-39

1058

20K→Half

12.4 - 13.1 mi

Top 5%
×2story building
+19ft-37ft

Overall

1295

Males

1229

M18-39

1229

Half→25K

13.1 - 15.5 mi

Top 4%
×4story building
+66ft-88ft

Overall

1247

Males

1180

M18-39

1180

25K→30K

15.5 - 18.6 mi

Top 5%
×9story building
+181ft-148ft

Overall

1470

Males

1391

M18-39

1391

30K→20M

18.6 - 20.0 mi

Top 12%
×5story building
+64ft-50ft

Overall

3278

Males

3029

M18-39

3029

20M→21M

20.0 - 21.0 mi

Top 18%
×8story building
+106ft-24ft

Overall

5083

Males

4429

M18-39

4429

21M→35K

21.0 - 21.8 mi

Top 17%
×7story building
+17ft-86ft

Overall

4842

Males

4254

M18-39

4254

35K→23M

21.8 - 23.0 mi

Top 18%
×5story building
+23ft-63ft

Overall

5175

Males

4426

M18-39

4426

23M→24M

23.0 - 24.0 mi

Top 22%
×6story building
+12ft-82ft

Overall

6180

Males

5012

M18-39

5012

24M→40K

24.0 - 24.9 mi

Top 17%
×1story
+6ft-20ft

Overall

4852

Males

4096

M18-39

4096

40K→25.2M

24.9 - 25.2 mi

Top 16%
×1story
+13ft-16ft

Overall

4658

Males

3856

M18-39

3856

25.2M→Finish

25.2 - 26.2 mi

Top 10%
×2story building
+22ft-21ft

Overall

2760

Males

2467

M18-39

2467

Passing Analysis

Category:
Athletes Passed
595
Passed By
912
Net Change
-317
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#1687
5K → 10K14245+97#1687#1590
10K → 15K10710+97#1590#1493
15K → 20K11611+105#1493#1388
20K → Half204+16#1388#1372
Half → 25K6015+45#1372#1327
25K → 30K4948+1#1327#1326
30K → 20M1297-85#1326#1411
20M → 21M6147-141#1411#1552
21M → 35K787-80#1552#1632
35K → 23M16146-130#1632#1762
23M → 24M11153-142#1762#1904
24M → 40K1478-64#1904#1968
40K → 25.2M335-32#1968#2000
25.2M → Finish3236-4#2000#2004
TOTALS595912-317
📊

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