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BOSTON MARATHON 2025

Celestine Massmann Iii

Bib: 4864•M

MN

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 42%
Gender (Male)
#0 / 16105
Division (M18-39)
#0 / 5642
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
22:15
Rank: #9146
Start → 5K
22:15 | 7:10/mi
10K· 6.21 mi
44:14
Rank: #8773 (+373)
5K → 10K
21:59 | 7:05/mi
15K· 9.32 mi
1:06:10
Rank: #8474 (+299)
10K → 15K
21:56 | 7:04/mi
20K· 12.43 mi
1:29:16
Rank: #8820 (-346)
15K → 20K
23:06 | 7:26/mi
Half· 13.11 mi
1:34:16
Rank: #8895 (-75)
20K → Half
5:00 | 7:20/mi
25K· 15.53 mi
1:53:24
Rank: #9568 (-673)
Half → 25K
19:08 | 7:53/mi
30K· 18.64 mi
2:20:24
Rank: #10882 (-1314)
25K → 30K
27:00 | 8:41/mi
20M
2:32:10
Rank: #11151 (-269)
30K → 20M
11:46 | 8:40/mi
21M
2:41:07
Rank: #11249 (-98)
20M → 21M
8:57 | 8:57/mi
35K· 21.75 mi
2:47:25
Rank: #11374 (-125)
21M → 35K
6:18 | 8:25/mi
23M
2:58:35
Rank: #11688 (-314)
35K → 23M
11:10 | 8:55/mi
24M
3:07:22
Rank: #11898 (-210)
23M → 24M
8:47 | 8:47/mi
40K· 24.85 mi
3:14:50
Rank: #12008 (-110)
24M → 40K
7:28 | 8:44/mi
25.2M
3:18:00
Rank: #12013 (-5)
40K → 25.2M
3:10 | 9:11/mi
Finish· 26.22 mi
3:25:56
Rank: #11968 (+45)
25.2M → Finish
7:56 | 7:47/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:34:16
Pace7:11 /mi
2nd Half
Distance13.11 mi
Time1:51:40
Pace8:31 /mi
📊Positive Split: 18.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:26:0522:157:1022:15
7:10
-
10K
6.21 mi10:48:0444:147:0721:59
7:05
-0:05
15K
9.32 mi11:10:001:06:107:0621:56
7:04
-0:01
20K
12.43 mi11:33:061:29:167:1123:06
7:26
+0:22
Half
13.11 mi11:38:061:34:167:115:00
7:20
-0:06
25K
15.53 mi11:57:141:53:247:1819:08
7:53
+0:33
30K
18.64 mi12:24:142:20:247:3227:00
8:41
+0:48
20M
20.00 mi12:36:002:32:107:3611:46
8:40
-0:01
21M
21.00 mi12:44:572:41:077:408:57
8:57
+0:17
35K
21.75 mi12:51:152:47:257:426:18
8:25
-0:32
23M
23.00 mi13:02:252:58:357:4611:10
8:55
+0:30
24M
24.00 mi13:11:123:07:227:488:47
8:47
-0:08
40K
24.85 mi13:18:403:14:507:507:28
8:44
-0:03
25.2M
25.20 mi13:21:503:18:007:513:10
9:11
+0:27
Finish
26.22 mi13:29:463:25:567:527:56
7:47
-1:24

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

7:04 /mi

Average Pace

7:52 /mi

Slowest Pace

9:11 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:01:20

59% of race

Time at Steady Pace

1:01:19

30% of race

Time at Slower Pace

23:17

11% of race

Average Pace: 7:51 /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 mi10:26:0522:157:1022:15
7:10
#9146
10K
6.21 mi10:48:0444:147:0721:59
7:05
#8773
15K
9.32 mi11:10:001:06:107:0621:56
7:04
#8474
20K
12.43 mi11:33:061:29:167:1123:06
7:26
#8820
Half
13.11 mi11:38:061:34:167:115:00
7:20
#8895
25K
15.53 mi11:57:141:53:247:1819:08
7:53
#9568
30K
18.64 mi12:24:142:20:247:3227:00
8:41
#10882
20M
20.00 mi12:36:002:32:107:3611:46
8:40
#11151
21M
21.00 mi12:44:572:41:077:408:57
8:57
#11249
35K
21.75 mi12:51:152:47:257:426:18
8:25
#11374
23M
23.00 mi13:02:252:58:357:4611:10
8:55
#11688
24M
24.00 mi13:11:123:07:227:488:47
8:47
#11898
40K
24.85 mi13:18:403:14:507:507:28
8:44
#12008
25.2M
25.20 mi13:21:503:18:007:513:10
9:11
#12013
Finish
26.22 mi13:29:463:25:567:527:56
7:47
#11968
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi9146769876988044(Top 28%)6974(Top 43%)6974(Top 124%)
10K6.21 mi3.10 mi8773+3737466+2327466+2328473(Top 30%)7282(Top 45%)7282(Top 129%)
15K9.32 mi3.11 mi8474+2997268+1987268+1988044(Top 28%)6974(Top 43%)6974(Top 124%)
20K12.43 mi3.11 mi8820-3467458-1907458-19010202(Top 36%)8118(Top 50%)8118(Top 144%)
Half13.11 mi0.68 mi8895-757497-397497-3910252(Top 36%)8168(Top 51%)8168(Top 145%)
25K15.53 mi2.42 mi9568-6737834-3377834-33713020(Top 46%)9294(Top 58%)9294(Top 165%)
30K18.64 mi3.11 mi10882-13148452-6188452-61815924(Top 56%)10458(Top 65%)10458(Top 185%)
20M20.00 mi1.36 mi11151-2698538-868538-8614756(Top 52%)9793(Top 61%)9793(Top 174%)
21M21.00 mi1.00 mi11249-988540-28540-213184(Top 46%)8940(Top 56%)8940(Top 158%)
35K21.75 mi0.75 mi11374-1258575-358575-3514941(Top 53%)9690(Top 60%)9690(Top 172%)
23M23.00 mi1.25 mi11688-3148686-1118686-11115761(Top 55%)9960(Top 62%)9960(Top 177%)
24M24.00 mi1.00 mi11898-2108754-688754-6816190(Top 57%)10105(Top 63%)10105(Top 179%)
40K24.85 mi0.85 mi12008-1108756-28756-214771(Top 52%)9326(Top 58%)9326(Top 165%)
25.2M25.20 mi0.35 mi12013-58751+58751+512755(Top 45%)8340(Top 52%)8340(Top 148%)
Finish26.22 mi1.02 mi11968+458703+488703+4811304(Top 40%)7663(Top 48%)7663(Top 136%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 28%
×21stories
+97ft-345ft

Overall

8044

Males

6974

M18-39

6974

5K→10K

3.1 - 6.2 mi

Top 30%
×5stories
+79ft-138ft

Overall

8473

Males

7282

M18-39

7282

10K→15K

6.2 - 9.3 mi

Top 28%
×3stories
+67ft-78ft

Overall

8044

Males

6974

M18-39

6974

15K→20K

9.3 - 12.4 mi

Top 36%
×5stories
+106ft-86ft

Overall

10202

Males

8118

M18-39

8118

20K→Half

12.4 - 13.1 mi

Top 36%
×2stories
+19ft-37ft

Overall

10252

Males

8168

M18-39

8168

Half→25K

13.1 - 15.5 mi

Top 46%
×4stories
+66ft-88ft

Overall

13020

Males

9294

M18-39

9294

25K→30K

15.5 - 18.6 mi

Top 56%
×9stories
+181ft-148ft

Overall

15924

Males

10458

M18-39

10458

30K→20M

18.6 - 20.0 mi

Top 52%
×5stories
+64ft-50ft

Overall

14756

Males

9793

M18-39

9793

20M→21M

20.0 - 21.0 mi

Top 46%
×8stories
+106ft-24ft

Overall

13184

Males

8940

M18-39

8940

21M→35K

21.0 - 21.8 mi

Top 53%
×7stories
+17ft-86ft

Overall

14941

Males

9690

M18-39

9690

35K→23M

21.8 - 23.0 mi

Top 55%
×5stories
+23ft-63ft

Overall

15761

Males

9960

M18-39

9960

23M→24M

23.0 - 24.0 mi

Top 57%
×6stories
+12ft-82ft

Overall

16190

Males

10105

M18-39

10105

24M→40K

24.0 - 24.9 mi

Top 52%
×1story
+6ft-20ft

Overall

14771

Males

9326

M18-39

9326

40K→25.2M

24.9 - 25.2 mi

Top 45%
×1story
+13ft-16ft

Overall

12755

Males

8340

M18-39

8340

25.2M→Finish

25.2 - 26.2 mi

Top 40%
×2stories
+22ft-21ft

Overall

11304

Males

7663

M18-39

7663

Passing Analysis

Category:
Athletes Passed
1381
Passed By
4201
Net Change
-2822
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9146
5K → 10K44976+373#9146#8773
10K → 15K34546+299#8773#8474
15K → 20K80426-346#8474#8820
20K → Half1186-75#8820#8895
Half → 25K45718-673#8895#9568
25K → 30K331345-1314#9568#10882
30K → 20M60329-269#10882#11151
20M → 21M67165-98#11151#11249
21M → 35K29154-125#11249#11374
35K → 23M46360-314#11374#11688
23M → 24M36246-210#11688#11898
24M → 40K53163-110#11898#12008
40K → 25.2M3338-5#12008#12013
25.2M → Finish9449+45#12013#11968
TOTALS13814201-2822
📊

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