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BOSTON MARATHON 2025

Thomas Fellows

Bib: 6670•M

MA

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 4%
Gender (Male)
#0 / 16105
Top 7%
Division (M18-39)
#0 / 5642
Top 17%
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
5:38/mi
17:31
↑ 97↓ 3451.5%
10K· 6.21 mi
5:51/mi
35:42
↑ 79↓ 1380.4%
15K· 9.32 mi
5:54/mi
54:02
↑ 67↓ 78
20K· 12.43 mi
6:05/mi
1:12:55
↑ 106↓ 860.1%
Half· 13.11 mi
6:03/mi
1:17:03
↑ 19↓ 370.5%
25K· 15.53 mi
6:13/mi
1:32:08
↑ 66↓ 880.2%
30K· 18.64 mi
6:30/mi
1:52:19
↑ 181↓ 1480.2%
20M
6:52/mi
2:01:39
↑ 64↓ 500.2%
21M
7:15/mi
2:08:54
↑ 106↓ 241.6%
35K· 21.75 mi
6:22/mi
2:13:40
↑ 17↓ 861.7%
23M
6:34/mi
2:21:53
↑ 23↓ 630.6%
24M
6:23/mi
2:28:16
↓ 821.3%
40K· 24.85 mi
6:38/mi
2:33:56
↓ 200.3%
25.2M
7:50/mi
2:36:38
↑ 13↓ 160.2%
Finish· 26.22 mi
6:47/mi
2:43:33
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:17:03
Pace5:53 /mi
2nd Half
Distance13.11 mi
Time1:26:30
Pace6:36 /mi
📊Positive Split: 12.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:24:1517:315:3817:31
5:38
-
10K
6.21 mi10:42:2635:425:4518:11
5:51
+0:13
15K
9.32 mi11:00:4654:025:4818:20
5:54
+0:03
20K
12.43 mi11:19:391:12:555:5218:53
6:05
+0:11
Half
13.11 mi11:23:471:17:035:534:08
6:03
-0:02
25K
15.53 mi11:38:521:32:085:5615:05
6:13
+0:10
30K
18.64 mi11:59:031:52:196:0220:11
6:30
+0:17
20M
20.00 mi12:08:232:01:396:059:20
6:52
+0:22
21M
21.00 mi12:15:382:08:546:087:15
7:15
+0:23
35K
21.75 mi12:20:242:13:406:094:46
6:22
-0:53
23M
23.00 mi12:28:372:21:536:108:13
6:34
+0:12
24M
24.00 mi12:35:002:28:166:116:23
6:23
-0:11
40K
24.85 mi12:40:402:33:566:125:40
6:38
+0:15
25.2M
25.20 mi12:43:222:36:386:132:42
7:50
+1:12
Finish
26.22 mi12:50:172:43:336:156:55
6:47
-1:03

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

5:38 /mi

Average Pace

6:15 /mi

Slowest Pace

7:50 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:17:03

47% of race

Time at Steady Pace

1:00:18

37% of race

Time at Slower Pace

26:12

16% of race

Average Pace: 6:14 /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 mi10:24:1517:315:3817:31
5:38
#351
10K
6.21 mi10:42:2635:425:4518:11
5:51
#522
15K
9.32 mi11:00:4654:025:4818:20
5:54
#568
20K
12.43 mi11:19:391:12:555:5218:53
6:05
#661
Half
13.11 mi11:23:471:17:035:534:08
6:03
#688
25K
15.53 mi11:38:521:32:085:5615:05
6:13
#771
30K
18.64 mi11:59:031:52:196:0220:11
6:30
#890
20M
20.00 mi12:08:232:01:396:059:20
6:52
#987
21M
21.00 mi12:15:382:08:546:087:15
7:15
#1057
35K
21.75 mi12:20:242:13:406:094:46
6:22
#1075
23M
23.00 mi12:28:372:21:536:108:13
6:34
#1072
24M
24.00 mi12:35:002:28:166:116:23
6:23
#1079
40K
24.85 mi12:40:402:33:566:125:40
6:38
#1095
25.2M
25.20 mi12:43:222:36:386:132:42
7:50
#1130
Finish
26.22 mi12:50:172:43:336:156:55
6:47
#1191
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi351318318761(Top 3%)712(Top 4%)712(Top 13%)
10K6.21 mi3.10 mi522-171484-166484-166720(Top 3%)675(Top 4%)675(Top 12%)
15K9.32 mi3.11 mi568-46529-45529-45761(Top 3%)712(Top 4%)712(Top 13%)
20K12.43 mi3.11 mi661-93614-85614-851092(Top 4%)1030(Top 6%)1030(Top 18%)
Half13.11 mi0.68 mi688-27641-27641-271359(Top 5%)1291(Top 8%)1291(Top 23%)
25K15.53 mi2.42 mi771-83722-81722-811532(Top 5%)1454(Top 9%)1454(Top 26%)
30K18.64 mi3.11 mi890-119837-115837-1151950(Top 7%)1853(Top 12%)1853(Top 33%)
20M20.00 mi1.36 mi987-97929-92929-923277(Top 12%)3028(Top 19%)3028(Top 54%)
21M21.00 mi1.00 mi1057-70996-67996-673330(Top 12%)3052(Top 19%)3052(Top 54%)
35K21.75 mi0.75 mi1075-181012-161012-161862(Top 7%)1746(Top 11%)1746(Top 31%)
23M23.00 mi1.25 mi1072+31010+21010+21668(Top 6%)1557(Top 10%)1557(Top 28%)
24M24.00 mi1.00 mi1079-71016-61016-61583(Top 6%)1476(Top 9%)1476(Top 26%)
40K24.85 mi0.85 mi1095-161032-161032-162039(Top 7%)1877(Top 12%)1877(Top 33%)
25.2M25.20 mi0.35 mi1130-351065-331065-334912(Top 17%)4029(Top 25%)4029(Top 71%)
Finish26.22 mi1.02 mi1191-611120-551120-554384(Top 15%)3700(Top 23%)3700(Top 66%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 3%
×21story building
+97ft-345ft

Overall

761

Males

712

M18-39

712

5K→10K

3.1 - 6.2 mi

Top 3%
×5story building
+79ft-138ft

Overall

720

Males

675

M18-39

675

10K→15K

6.2 - 9.3 mi

Top 3%
×3story building
+67ft-78ft

Overall

761

Males

712

M18-39

712

15K→20K

9.3 - 12.4 mi

Top 4%
×5story building
+106ft-86ft

Overall

1092

Males

1030

M18-39

1030

20K→Half

12.4 - 13.1 mi

Top 5%
×2story building
+19ft-37ft

Overall

1359

Males

1291

M18-39

1291

Half→25K

13.1 - 15.5 mi

Top 5%
×4story building
+66ft-88ft

Overall

1532

Males

1454

M18-39

1454

25K→30K

15.5 - 18.6 mi

Top 7%
×9story building
+181ft-148ft

Overall

1950

Males

1853

M18-39

1853

30K→20M

18.6 - 20.0 mi

Top 12%
×5story building
+64ft-50ft

Overall

3277

Males

3028

M18-39

3028

20M→21M

20.0 - 21.0 mi

Top 12%
×8story building
+106ft-24ft

Overall

3330

Males

3052

M18-39

3052

21M→35K

21.0 - 21.8 mi

Top 7%
×7story building
+17ft-86ft

Overall

1862

Males

1746

M18-39

1746

35K→23M

21.8 - 23.0 mi

Top 6%
×5story building
+23ft-63ft

Overall

1668

Males

1557

M18-39

1557

23M→24M

23.0 - 24.0 mi

Top 6%
×6story building
+12ft-82ft

Overall

1583

Males

1476

M18-39

1476

24M→40K

24.0 - 24.9 mi

Top 7%
×1story
+6ft-20ft

Overall

2039

Males

1877

M18-39

1877

40K→25.2M

24.9 - 25.2 mi

Top 17%
×1story
+13ft-16ft

Overall

4912

Males

4029

M18-39

4029

25.2M→Finish

25.2 - 26.2 mi

Top 15%
×2story building
+22ft-21ft

Overall

4384

Males

3700

M18-39

3700

Passing Analysis

Category:
Athletes Passed
133
Passed By
973
Net Change
-840
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#351
5K → 10K0171-171#351#522
10K → 15K753-46#522#568
15K → 20K7100-93#568#661
20K → Half128-27#661#688
Half → 25K1093-83#688#771
25K → 30K11130-119#771#890
30K → 20M8105-97#890#987
20M → 21M777-70#987#1057
21M → 35K1331-18#1057#1075
35K → 23M3835+3#1075#1072
23M → 24M1219-7#1072#1079
24M → 40K925-16#1079#1095
40K → 25.2M237-35#1095#1130
25.2M → Finish869-61#1130#1191
TOTALS133973-840
📊

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