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SF MARATHON 1ST HALF 2025

Zayne Williamson

Chicago, IL

Bib: 16750 M 40

0:00
0:00
/ mi
Masters
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Overall
#0 / 7100
Top 44%
Gender (Male)
#0 / 3977
Masters (Masters Men)
#0 / 1096
Top 44%
Division (M40-44)
#0 / 336
Race Day Weather
56°/46°F
light rain

Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
1.81M
9:35/mi
17:21
→ flat
5.34M
9:41/mi
51:32
↑ 80↓ 74
6.15M
10:34/mi
1:00:05
↑ 126
10.54M
10:12/mi
1:44:52
↑ 230↓ 361
11.05M
14:32/mi
1:52:17
↑ 172
Finish· 13.11 mi
10:53/mi
2:14:41
↑ 97↓ 114
Course Elevation
10–277 ft
≈
×22story building
•▲ 774 ft climb · ▼ 557 ft descent

The Course

Half Splits

1st Half· via 6.15M
1:00:059:46 /mi⚡ faster
2nd Half
1:14:3610:43 /mi+24.2%
Positive split — 24.2% slower in the second half
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Your race, unpacked

See your splits, ranks & AI insights.

Checkpoint Splits

CheckpointTimeAvg PaceSegment LengthSegment TimeSegment PaceTrendDiff
1.81M
17:219:351.81 mi17:21
9:35
-
5.34M
51:329:393.53 mi34:11
9:41
+0:06
6.15M
1:00:059:460.81 mi8:33
10:34
+0:53
10.54M
1:44:529:574.39 mi44:47
10:12
-0:22
11.05M
1:52:1710:100.51 mi7:25
14:32
+4:20
Finish(13.11 mi)
2:14:4110:162.06 mi22:24
10:53
-3:39
Trend:
Faster pace
Steady pace
Slower pace

Checkpoints & Pacing

Pace Line

Fastest Pace

9:35 /mi

Average Pace

10:16 /mi

Slowest Pace

14:32 /mi

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Fastest
Middle
Slowest
Average

Segments

Time at Faster Pace

51:32

38% of race

Time at Steady Pace

1:15:44

56% of race

Time at Slower Pace

7:25

6% of race

Average Pace: 10:16 /mi

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Faster pace (< avg)
Steady pace (≈ avg)
Slower pace (> avg)

Heatmap

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0mi3.3mi6.6mi9.8mi13.1mi
Pace:
Faster
Steady
Slower

Checkpoint and Segment Rankings

CheckpointSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
1.81M1.81 mi3036210318830362103188
5.34M3.53 mi2942+942049+54182+629492045179
6.15M0.81 mi3015-732084-35181+134752334198
10.54M4.39 mi3058-432099-1518132102177190
11.05M0.51 mi3098-402123-24182-135902345194
Finish(13.11 mi)2.06 mi3154-562147-24184-236762338199

Segment Performance Analysis

Start → 1.81M

0.0 - 1.8 mi

Top 43%
~flat
+4ft-3ft

Overall

3036

Males

2103

M40-44

188

1.81M→5.34M

1.8 - 5.3 mi

Top 42%
×4story building
+80ft-74ft

Overall

2949

Males

2045

M40-44

179

5.34M→6.15M

5.3 - 6.2 mi

Top 49%
×10story building
+126ft-4ft

Overall

3475

Males

2334

M40-44

198

6.15M→10.54M

6.2 - 10.5 mi

Top 45%
×21story building
+230ft-361ft

Overall

3210

Males

2177

M40-44

190

10.54M→11.05M

10.5 - 11.1 mi

Top 51%
×14story building
+172ft-0ft

Overall

3590

Males

2345

M40-44

194

11.05M→Finish

11.1 - 13.1 mi

Top 52%
×7story building
+97ft-114ft

Overall

3676

Males

2338

M40-44

199

Passing Analysis

Category:
▼Net Change
0
0 passed by0* passed
SegmentMovementRank
Start → 1.81M-#3036
1.81M → 5.34M
164258*+94
#3036 → #2942
5.34M → 6.15M
9522-73
#2942 → #3015
6.15M → 10.54M
179136*-43
#3015 → #3058
10.54M → 11.05M
7333-40
#3058 → #3098
11.05M → Finish
9943*-56
#3098 → #3154
TOTALS
610492*-118
#3036 → #3154

* Includes athletes who did not complete a segment (DNF/DNQ).

Passing Visualized

Category:
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Passing Circle

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Position Flow

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Race Lanes

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Official Timing Data

The San Francisco Marathon

The San Francisco Marathon

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Race Place Events