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BOSTON MARATHON 2025

Tom Clifford

Bib: 734•M

NC

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 0.5%
Gender (Male)
#0 / 16105
Top 0.8%
Masters (Masters Men)
#0 / 10463
Top 0.1%
Division (M40-44)
#0 / 2247
Top 0.3%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
17:33
Rank: #358
Start → 5K
17:33 | 5:39/mi
10K· 6.21 mi
34:48
Rank: #296 (+62)
5K → 10K
17:15 | 5:33/mi
15K· 9.32 mi
52:03
Rank: #262 (+34)
10K → 15K
17:15 | 5:33/mi
20K· 12.43 mi
1:09:27
Rank: #241 (+21)
15K → 20K
17:24 | 5:36/mi
Half· 13.11 mi
1:13:09
Rank: #233 (+8)
20K → Half
3:42 | 5:25/mi
25K· 15.53 mi
1:26:31
Rank: #214 (+19)
Half → 25K
13:22 | 5:31/mi
30K· 18.64 mi
1:44:06
Rank: #189 (+25)
25K → 30K
17:35 | 5:40/mi
20M
1:51:49
Rank: #177 (+12)
30K → 20M
7:43 | 5:41/mi
21M
1:57:53
Rank: #171 (+6)
20M → 21M
6:04 | 6:04/mi
35K· 21.75 mi
2:02:02
Rank: #165 (+6)
21M → 35K
4:09 | 5:33/mi
23M
2:09:19
Rank: #159 (+6)
35K → 23M
7:17 | 5:49/mi
24M
2:14:56
Rank: #156 (+3)
23M → 24M
5:37 | 5:37/mi
40K· 24.85 mi
2:19:49
Rank: #151 (+5)
24M → 40K
4:53 | 5:43/mi
25.2M
2:22:03
Rank: #149 (+2)
40K → 25.2M
2:14 | 6:29/mi
Finish· 26.22 mi
2:28:04
Rank: #149
25.2M → Finish
6:01 | 5:54/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:13:09
Pace5:35 /mi
2nd Half
Distance13.11 mi
Time1:14:55
Pace5:43 /mi
📊Positive Split: 2.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:17:3817:335:3917:33
5:39
-
10K
6.21 mi10:34:5334:485:3617:15
5:33
-0:06
15K
9.32 mi10:52:0852:035:3517:15
5:33
0:00
20K
12.43 mi11:09:321:09:275:3517:24
5:36
+0:03
Half
13.11 mi11:13:141:13:095:353:42
5:25
-0:11
25K
15.53 mi11:26:361:26:315:3413:22
5:31
+0:06
30K
18.64 mi11:44:111:44:065:3517:35
5:40
+0:09
20M
20.00 mi11:51:541:51:495:357:43
5:41
+0:01
21M
21.00 mi11:57:581:57:535:376:04
6:04
+0:23
35K
21.75 mi12:02:072:02:025:374:09
5:33
-0:31
23M
23.00 mi12:09:242:09:195:377:17
5:49
+0:16
24M
24.00 mi12:15:012:14:565:375:37
5:37
-0:12
40K
24.85 mi12:19:542:19:495:384:53
5:43
+0:06
25.2M
25.20 mi12:22:082:22:035:382:14
6:29
+0:46
Finish
26.22 mi12:28:092:28:045:396:01
5:54
-0:35

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

5:25 /mi

Average Pace

5:39 /mi

Slowest Pace

6:29 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:19:46

94% of race

Time at Steady Pace

6:04

4% of race

Time at Slower Pace

2:14

2% of race

Average Pace: 5:39 /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 mi10:17:3817:335:3917:33
5:39
#358
10K
6.21 mi10:34:5334:485:3617:15
5:33
#296
15K
9.32 mi10:52:0852:035:3517:15
5:33
#262
20K
12.43 mi11:09:321:09:275:3517:24
5:36
#241
Half
13.11 mi11:13:141:13:095:353:42
5:25
#233
25K
15.53 mi11:26:361:26:315:3413:22
5:31
#214
30K
18.64 mi11:44:111:44:065:3517:35
5:40
#189
20M
20.00 mi11:51:541:51:495:357:43
5:41
#177
21M
21.00 mi11:57:581:57:535:376:04
6:04
#171
35K
21.75 mi12:02:072:02:025:374:09
5:33
#165
23M
23.00 mi12:09:242:09:195:377:17
5:49
#159
24M
24.00 mi12:15:012:14:565:375:37
5:37
#156
40K
24.85 mi12:19:542:19:495:384:53
5:43
#151
25.2M
25.20 mi12:22:082:22:035:382:14
6:29
#149
Finish
26.22 mi12:28:092:28:045:396:01
5:54
#149
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi358325325205(Top 0.7%)179(Top 1%)179(Top 8%)
10K6.21 mi3.10 mi296+62267+58267+58248(Top 0.9%)219(Top 1%)219(Top 10%)
15K9.32 mi3.11 mi262+34233+34233+34205(Top 0.7%)179(Top 1%)179(Top 8%)
20K12.43 mi3.11 mi241+21214+19214+19196(Top 0.7%)173(Top 1%)173(Top 8%)
Half13.11 mi0.68 mi233+8207+7207+7128(Top 0.5%)119(Top 0.7%)119(Top 5%)
25K15.53 mi2.42 mi214+19188+19188+19141(Top 0.5%)120(Top 0.7%)120(Top 5%)
30K18.64 mi3.11 mi189+25166+22166+22146(Top 0.5%)128(Top 0.8%)128(Top 6%)
20M20.00 mi1.36 mi177+12155+11155+11113(Top 0.4%)106(Top 0.7%)106(Top 5%)
21M21.00 mi1.00 mi171+6150+5150+5163(Top 0.6%)150(Top 0.9%)150(Top 7%)
35K21.75 mi0.75 mi165+6144+6144+6138(Top 0.5%)124(Top 0.8%)124(Top 6%)
23M23.00 mi1.25 mi159+6138+6138+6174(Top 0.6%)162(Top 1%)162(Top 7%)
24M24.00 mi1.00 mi156+3135+3135+3137(Top 0.5%)126(Top 0.8%)126(Top 6%)
40K24.85 mi0.85 mi151+5130+5130+5134(Top 0.5%)126(Top 0.8%)126(Top 6%)
25.2M25.20 mi0.35 mi149+2128+2128+2392(Top 1%)359(Top 2%)359(Top 16%)
Finish26.22 mi1.02 mi149128128676(Top 2%)636(Top 4%)636(Top 28%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 0.7%
×21stories
+97ft-345ft

Overall

205

Males

179

M40-44

179

5K→10K

3.1 - 6.2 mi

Top 0.9%
×5stories
+79ft-138ft

Overall

248

Males

219

M40-44

219

10K→15K

6.2 - 9.3 mi

Top 0.7%
×3stories
+67ft-78ft

Overall

205

Males

179

M40-44

179

15K→20K

9.3 - 12.4 mi

Top 0.7%
×5stories
+106ft-86ft

Overall

196

Males

173

M40-44

173

20K→Half

12.4 - 13.1 mi

Top 0.5%
×2stories
+19ft-37ft

Overall

128

Males

119

M40-44

119

Half→25K

13.1 - 15.5 mi

Top 0.5%
×4stories
+66ft-88ft

Overall

141

Males

120

M40-44

120

25K→30K

15.5 - 18.6 mi

Top 0.5%
×9stories
+181ft-148ft

Overall

146

Males

128

M40-44

128

30K→20M

18.6 - 20.0 mi

Top 0.4%
×5stories
+64ft-50ft

Overall

113

Males

106

M40-44

106

20M→21M

20.0 - 21.0 mi

Top 0.6%
×8stories
+106ft-24ft

Overall

163

Males

150

M40-44

150

21M→35K

21.0 - 21.8 mi

Top 0.5%
×7stories
+17ft-86ft

Overall

138

Males

124

M40-44

124

35K→23M

21.8 - 23.0 mi

Top 0.6%
×5stories
+23ft-63ft

Overall

174

Males

162

M40-44

162

23M→24M

23.0 - 24.0 mi

Top 0.5%
×6stories
+12ft-82ft

Overall

137

Males

126

M40-44

126

24M→40K

24.0 - 24.9 mi

Top 0.5%
×1story
+6ft-20ft

Overall

134

Males

126

M40-44

126

40K→25.2M

24.9 - 25.2 mi

Top 1%
×1story
+13ft-16ft

Overall

392

Males

359

M40-44

359

25.2M→Finish

25.2 - 26.2 mi

Top 2%
×2stories
+22ft-21ft

Overall

676

Males

636

M40-44

636

Passing Analysis

Category:
Athletes Passed
219
Passed By
10
Net Change
+209
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#358
5K → 10K642+62#358#296
10K → 15K340+34#296#262
15K → 20K210+21#262#241
20K → Half80+8#241#233
Half → 25K190+19#233#214
25K → 30K283+25#214#189
30K → 20M120+12#189#177
20M → 21M82+6#177#171
21M → 35K60+6#171#165
35K → 23M60+6#165#159
23M → 24M30+3#159#156
24M → 40K50+5#156#151
40K → 25.2M20+2#151#149
25.2M → Finish330#149#149
TOTALS21910+209
📊

Passing Visuals

Category:
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🔥Passing Intensity

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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